GENERATION ROBOTS SCOUT 2.0 ScoutSan Mobile Robot User Manual

: May 15, 2024
: Generation ROBOTS

Table of Contents

GENERATION ROBOTS SCOUT 2.0 ScoutSan Mobile Robot
Product Information
Product Usage Instructions
Frequently Asked Questions
Safety Information
Operational environment
Introduction
Charging operation
Function Control mode
Rear light mode
Firmware upgrades
References
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GENERATION ROBOTS SCOUT 2.0 ScoutSan Mobile Robot

GENERATION-ROBOTS-SCOUT-2.0-ScoutSan-Mobile-Robot-
image

Product Information

Specifications

Product: SCOUT 2.0 AgileX Robotics Team
Document Version: V.2.0.2
Release Date: 2023.09
Maximum Load Capacity: 50KG
Operating Temperature: -10°C to 45°C
Water and Dust Protection: IP22

Product Usage Instructions

Safety Information

Before powering on the robot for the first time, read and understand all safety information in this manual. Follow assembly instructions carefully and pay attention to warning signs.

Effectiveness and Responsibility

Conduct a risk assessment of the complete robot system.
Connect additional safety equipment as defined by the risk assessment.
Ensure correct design and installation of peripheral equipment.
Do not use the robot as a complete autonomous mobile robot.

Environmental Considerations

Operate SCOUT 2.0 in an ambient temperature range of -10°C to 45°C.
Ensure IP22 protection for water and dust if not configured with custom IP protection.

Pre-work Checklist

Ensure sufficient power for all devices.
Check for defects in the Bunker.
Verify sufficient battery power for the remote controller.
Release emergency stop switch before use.

Operation

Operate in a relatively spacious area during remote control.
Keep remote control within visibility range.
Do not exceed the 50KG maximum load capacity.

Maintenance

Regularly check tire pressure (1.8bar~2.0bar) and adjust if needed.
Replace severely worn or burst tires promptly.
Charge the battery periodically if not in use for an extended period.

Frequently Asked Questions

Q: What should I do if SCOUT 2.0 shows a low battery alarm?
- A: Please charge the device promptly when the low battery alarm is triggered to avoid any operational issues.
Q: How should I handle defects in SCOUT 2.0?
- A: If you encounter any defects, immediately stop using the device and contact technical support for assistance. Do not attempt to fix defects on your own.

“`

Update firmware upgrade instructions

Upper PC software link

Update the instructions for using the ros package Delete RS232 serial port
support instructions Update contents
Synchronized robot parameter list

This chapter contains important safety information, before the robot is powered on for the first time, any individual or organization must read and understand this information before using the device. If you have any questions about use, please contact us at support@agilex.ai . Please follow and implement all assembly instructions and guidelines in the chapters of this manual, which is very important. Particular attention should be paid to the text related to the warning signs.

Safety Information

The information in this manual does not include the design, installation and operation of a complete robot application, nor does it include all peripheral equipment that may affect the safety of the complete system. The design and use of the complete system need to comply with the safety requirements established in the standards and regulations of the country where the robot is installed. SCOUT integrators and end customers have the responsibility to ensure compliance with the applicable laws and regulations of relevant countries, and to ensure that there are no major dangers in the complete robot application. This includes but is not limited to the following:
Effectiveness
and
responsibility
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Make a risk assessment of the complete robot system. Connect the additional safety equipment of other machinery defined by the risk assessment
together. Confirm that the design and installation of the entire robot system’s peripheral equipment,
including software and hardware systems, are correct. This robot does not have a complete autonomous mobile robot, including but not limited to
automatic anti-collision, anti-falling, biological approach warning and other related safety functions. Related functions require integrators and end customers to follow relevant regulations and feasible laws and regulations for safety assessment , To ensure that the developed robot does not have any major hazards and safety hazards in actual applications. Collect all the documents in the technical file: including risk assessment and this manual. Know the possible safety risks before operating and using the equipment.
Environmental
Considerations
For the first use,please read this manual carefully to understand the basic operating content and operating specification.
For remote control operation, select a relatively open area to use SCOUT2.0, because SCOUT2.0 is not equipped with any automatic obstacle avoidance sensor.
Use SCOUT2.0 always under -10~45 ambient temperature. If SCOUT 2.0 is not configured with separate custom IP protection, its water and dust
protection will be IP22 ONLY.
Pre-work
Checklist
Make sure each device has sufficient power. Make sure Bunker does not have any obvious defects. Check if the remote controller battery has sufficient power. When using, make sure the emergency stop switch has been released.
Operation
In remote control operation, make sure the area around is relatively spacious. Carry out remote control within the range of visibility.
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The maximum load of SCOUT2.0 is 50KG. When in use, ensure that the payload does not exceed 50KG.
When installing an external extension on SCOUT2.0, confirm the position of the center of mass of the extension and make sure it is at the center of rotation.
Please charge in tine when the device is low battery alarm. When SCOUT2..0 has a defect, please immediately stop using it to avoid secondary damage.
When SCOUT2.0 has had a defect, please contact the relevant technical to deal with it, do not handle the defect by yourself. Always use SCOUT2.0 in the environment with the protection level requires for the equipment.
Do not push SCOUT2.0 directly. When charging, make sure the ambient temperature is above 0 . If the vehicle shakes during its rotation, adjust the suspension.
Maintenance
Regularly check the pressure of the tire, and keep the tire pressure between 1.8bar~2.0bar. If the tire is severely worn or burst, please replace it in time. If the battery do not use for a long time, it need to charge the battery periodically in 2 to 3
months.
Attention

This section includes some precautions that should be paid attention to for SCOUT 2.0 use and development.
Battery
The battery supplied with SCOUT 2.0 is not fully charged in the factory setting, but its specific power capacity can be displayed on the voltmeter at rear end of SCOUT 2.0 chassis or read via CAN bus communication interface. The battery recharging can be stopped when the green LED on the charger turns green. Note that if you keep the charger connected after the green LED gets on, the charger will continue to charge the battery with about 0.1A current for about 30 minutes more to get the battery fully charged.
Please do not charge the battery after its power has been depleted, and please charge the battery in time when low battery level alarm is on;
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Static storage conditions: The best temperature for battery storage is -10 to 45; in case of storage for no use, the battery must be recharged and discharged once about every 2 months, and then stored in full voltage state. Please do not put the battery in fire or heat up the battery, and please do not store the battery in high-temperature environment;
Charging: The battery must be charged with a dedicated lithium battery charger; lithium-ion batteries cannot be charged below 0°C (32°F) and modifying or replacing the original batteries are strictly prohibited.
Protection: For overheating and overcurrent caused by overload, short circuit or coverage by external things, the BMS in the battery has overtemperature, overcurrent, overvoltage and undervoltage protection.

Operational environment

The operating temperature of SCOUT 2.0 is -10 to 45; please do not use it below -10 and above 45 ;
The requirements for relative humidity in the use environment of SCOUT 2.0 are: maximum 80%, minimum 30%;
Please do not use it in the environment with corrosive and flammable gases or closed to combustible substances;
Do not place it near heaters or heating elements such as large coiled resistors, etc.; Except for specially customized version (IP protection class customized), SCOUT 2.0 is not
water-proof, thus please do not use it in rainy, snowy or water-accumulated environment; The elevation of recommended use environment should not exceed 1,000m; The temperature difference between day and night of recommend-ed use environment should
not exceed 25;
Regularly check the tire pressure, and make sure it is within 1.8 bar to 2.0bar
If any tire is seriously worn out or has blown out, please replace it in time.
Electrical/extension
cords
The top extended power supply current does not exceed 10A, and the total power does not exceed 240W;
The current of the tail extension power supply shall not exceed 10A, and the total power shall not exceed 240W (if both are used at the same time, the maximum power shall not exceed 300W);
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When the system detects that the battery voltage is lower than the safe voltage, the external power extension will be actively cut off. Therefore, if the external extension device involves the storage of important data and does not have power-down protection, it is recommended that the user pay attention.
Additional
safety
advice
In case of any doubts during use, please follow related instruction manual or consult related technical personnel;
Before use, pay attention to field condition, and avoid mis-operation that will cause personnel safety problem;
In case of emergencies, press down the emergency stop button and power off the equipment; Without technical support and permission, please do not personally modify the internal
equipment structure.
Other
notes

SCOUT 2.0 has plastic parts in front and rear, please do not directly hit those parts with excessive force to avoid possible damages;
When handling and setting up, please do not fall off or place the vehicle upside down; For non-professionals, please do not disassemble the vehicle without permission.
CONTENTS
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CONTENTS
Document
version
Safety
Information
Attention
CONTENTS
1

Introduction

1.1 Component list 1.2 Tech specifications 1.3Requirement for development 2
The
Basics
2.1 Status indication 2.2 Instructions on electrical interfaces
2.2.1 Top electrical interface 2.2.2 Rear electrical interface 2.3 Instructions on remote control 2.4 Instructions on control demands and movements 2.5 Instructions on lighting control 3
Getting
Started
3.1 Use and operation 3.2 Charging 3.2.1 Charging operation 3.2.2 Battery replacement 3.3 Communication using CAN 3.3.1 CAN cable connection 3.3.2 Implementation of CAN command control
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3.3.3 CAN message protocol 3.5 Firmware upgrades 3.6 SCOUT 2.0 SDK 3.7 SCOUT2.0 ROS Package 5
Q&A

6
Product
Dimensions
6.1 Illustration diagram of product external dimensions 6.2 Illustration diagram of top extended support dimensions

1

Introduction

SCOUT 2.0 is designed as a multi-purpose UGV with different application scenarios considered: modular design; flexible connectivity; powerful motor system capable of high payload. Additional components such as stereo camera, laser radar, GPS, IMU and robotic manipulator can be optionally installed on SCOUT 2.0 for advanced navigation and computer vision applications. SCOUT 2.0 is frequently used for autonomous driving education and research, indoor and outdoor security patrolling, environment sensing, general logistics and transportation, to name a few only.
1.1
Component
list

Name SCOUT 2.0 Robot body Battery charger (AC 220V) Aviation plug (male, 4-pin) Remote control transmitter (optional) USB to CAN communication module

Quantity X 1 X 1 X 1 X 1 X1

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1.2
Tech
specifications

Parameter Types

Items

Values

L × W × H (mm)

930 X 699 X 349

Wheelbase (mm)

498

Front/rear wheel base (mm)

583

Weight of chassis body (kg)

67±1kg

Battery Type

Lithium battery

Battery parameters

24V 30Ah

Power drive motor

DC brushless 4 X 400W

Mechanical specifications

Steering drive motor Parking mode

Servo brake/anti-collision tube

Steering

Four-wheel differential steering

Suspension form

Front Double Rocker Independent Suspension Rear Double Rocker Independent Suspension

Steering motor reduction

–

ratio

Steering motor encoder Drive motor reduction ratio

–
1 40

Drive motor sensor

Magnetic braiding 2500

Performance parameters

IP Grade

IP22

Maximum speed (km/h)

1.5

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Control

Minimum turning radius (mm)
Maximum gradeability (°) Ground clearance (mm) Maximum battery life (h) Maximum distance (km)
Charging time (h) Working temperature ()
Control mode
RC transmitter System interface

Can turn in place
30° 135
8 15KM
3 -10~40 Remote control Control Command control mode 2.4G/extreme distance 200M
CAN

1.3
Requirement
for
development

FS RC transmitter is provided (optional) in the factory setting pf SCOUT 2.0, which allows users to control the chassis of robot to move and turn; CAN interfaces on SCOUT 2.0 can be used for user’s customization.
2
The
Basics

This section provides a brief introduction to the SCOUT 2.0 mobile robot platform, as shown in Figure

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SCOUT2.0 adopts a modular and intelligent design concept. The composite design of inflate rubber tyre and independent suspension on the power module, coupled with the powerful DC brushless servo motor, makes the SCOUT2.0 robot chassis development platform has strong pass ability and ground adapt ability, and can move flexibly on different ground.
1. An-ti-collision beams are mounted around the vehicle to reduce possible damages to the vehicle body during a collision.
2. Lights are both mounted at front and at back of the vehicle, of which the white light is designed for illumination in front whereas the red light is designed at rear end for warning and indication.
3. Emergency stop buttons are installed on both sides of the robot to ensure easy access and pressing either one can shut down power of the robot immediately when the robot behaves abnormally.
4. Open electrical interfaces and communication interfaces are configured at the rear and top of the car to facilitate customers’ secondary development. The electrical interface uses aviation waterproof connectors in the design and selection. On the one hand, it is conducive to customer expansion and use. On the other hand, This enables the robot platform to be used in some harsh environments.
5. A bayonet open compartment is reserved on the top for users.
2.1
Status
indication

Users can identify the status of vehicle body through the voltmeter, the beeper and lights mounted on SCOUT 2.0. For details, please refer to Table 2.1.

Status Voltage
Replace battery

Description
The current battery voltage can be read from the voltmeter on the rear electrical interface and with an accuracy of 1V.
When the battery power is lower than 15% or the voltage is lower than 24V, the car body will make a harsh “di-di-di” sound to prompt you. When it detects that the battery power is lower than 10% or the voltage is lower than 23V, SCOUT will actively cut off the external expansion power supply and driver power supply to prevent battery damage. At this time, the chassis will
not be able to perform motion control and accept external command control.

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Robot powered on

Front and rear lights are switched on.

Table 2.1 Descriptions of Vehicle Status

2.2
Instructions
on
electrical
interfaces

2.2.1
Top
electrical
interface

SCOUT 2.0 provides three 4-pin aviation connectors and one DB9 (RS232) connector. The position of the top aviation connector is shown in Figure 2.3.

Figure 2.3 Schematic Diagram of SCOUT 2.0 Electrical Interface on Top
SCOUT 2.0 has an aviation extension interface both on top and at rear end, each of which is configured with a set of power supply and a set of CAN communication interface. These interfaces can be used to supply power to extended devices and establish communication. The specific definitions of pins are shown in Figure 2.4.
It should be noted that, the extended power supply here is internally controlled, which means the power supply will be actively cut off once the battery voltage drops below the pre-specified threshold voltage. Therefore, users need to notice that SCOUT 2.0 platform will send a low voltage alarm before the threshold voltage is reached and also pay attention to battery recharging during use.

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2.2.2
Rear
electrical
interface

The extension interface at rear end is shown in Figure 2.6, where Q1 is the key switch as the main electrical switch; Q2 is the recharging interface; Q3 is the power supply switch of drive system; Q4 is DB9 serial port; Q5 is the extension interface for CAN and 24V power supply; Q6 is the display of battery voltage.
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2.3
Instructions
on
remote
control

The FS remote control is an optional accessory for SCOUT2.0 products. Customers can choose according to actual needs. The remote control can easily control the SCOUT2.0 universal robot chassis. In this product, we use a left- hand throttle design. Its definition and functions can be referred to Figure 2.7. The functions of the buttons are defined as follows: SWA and SWD are temporarily not enabled. SWB is the control mode selection button. Push it to the top for the command control mode, and push it to the middle for the remote control mode. SWC is the light control button. S1 is the throttle button. Control SCOUT2.0 to move forward and backward; S2 controls rotation, and POWER is the power button. Press and hold at the same time to turn on. Note:
The
mapping
of
the
remote
control
has
been
set
before
leaving
the
factory,
please
do
not
change
it
at
will.
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Figure 2.7 Schematic Diagram of Buttons on FS RC transmitter Remote
control
interface
description: Scout : model Vol: battery voltage Car: chassis status Batt: Chassis power percentage P: Park Remoter: remote control battery level Fault Code: Error information (Refer to the fault information description table)
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2.4
Instructions
on
control
demands
and
movements

A reference coordinate system can be defined and fixed on the vehicle body as shown in Figure 2.9 in accordance with ISO 8855.
Figure 2.9 Schematic Diagram of Reference Coordinate System for Vehicle Body As shown in Figure 2.9, the vehicle body of SCOUT 2.0 is in parallel with X axis of the established reference coordinate system. In the remote control mode, push the remote control stick S1 forward to move in the positive X direction, push S1 backward to move in the negative X direction. When S1 is pushed to the maximum value, the movement speed in the positive X direction is the maximum, When pushed S1 to the minimum, the movement speed in the negative direction of the X direction is the maximum; the remote control stick S2 controls the steering of the front wheels of the car body, push S2 to the left, and the vehicle turns to the left, pushing it to the maximum, and the steering angle is the largest, S2 Push to the right, the car will turn to the right, and push it to the maximum, at this time the right steering angle is the largest. In the control command mode, the positive value of the linear velocity means movement in the positive direction of the X axis, and the negative value of the linear velocity means movement in the negative direction of the X axis; The positive value of the angular velocity means the car body moves from the positive direction of the X axis to the positive direction of the Y axis, and the negative value of the angular velocity means the car body moves from the positive direction of the X axis to the negative direction of the Y axis.
2.5
Instructions
on
lighting
control

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SCOUT2.0 is equipped with lights on the front and rear. For the convenience of customers, SCOUT2.0 opens the lighting control interface to the outside world. At the same time, in order to save energy, a lighting control interface is reserved on the remote control. The remote control version currently only supports FS remote controls, and the adaptation work for other remote controls is still in progress. There are currently 3 lighting modes on the remote control. The mode switching can be switched through the SWC lever: Mode control description: Move the SWC lever to the bottom for normally closed mode, the middle for normally open mode, and the top for breathing light mode. Normally
closed
mode: In the normally closed mode, if the chassis is stationary, the headlights will turn off, and the taillights will enter the breathing light mode to indicate the current working status; if the chassis is driving at normal speed, the taillights will turn off and the headlights will turn on; Normally
on
mode:
In the normally on mode, if the chassis is stationary, the headlights are always on, and the taillights will enter the breathing light mode to indicate the stationary state; if in the sports mode, the taillights are off and the headlights are on; Breathing
light
mode:
The headlights and tail lights are in breathing light mode in various states.
3
Getting
Started

This section introduces the basic operation and development of the SCOUT 2.0 platform using the CAN bus interface.
3.1
Use
and
operation

The basic operating procedure of startup is shown as follows:
Check
Check the condition of SCOUT 2.0. Check whether there are significant anomalies; if so, please contact the after-sale service personal for support; Check the state of emergency-stop switches. Make sure both emergency stop buttons are released;
Startup
Rotate the key switch (Q1 on the electrical panel), and normally, the voltmeter will display correct battery voltage and front and rear lights will be both switched on;
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Check the battery voltage. If there is no continuous “beep-beep-beep…” sound from beeper, it means the battery voltage is correct; if the battery power level is low, please charge the battery;
Press Q3 (drive power switch button).
Shutdown
Rotate the key switch to cut off the power supply;
Emergency
stop
Press down emergency push button both on the left and the right of SCOUT 2.0 vehicle body;
Basic
operating
procedure
of
remote
control:
After the chassis of SCOUT 2.0 mobile robot is started correctly, turn on the RC transmitter and select the remote-control mode. Then, SCOUT 2.0 platform movement can be controlled by the RC transmitter.
3.2
Charging

SCOUT2.0 products are equipped with a 10A charger by default in the car, which can meet the charging needs of customers. By default, it is turned off for charging. When charging normally, there is no indicator light on the chassis. Please refer to the instructions on the charger for specific indicator lights.
3.2.1

Charging operation

1. Make sure that the SCOUT2.0 chassis is shut down and powered off. Before charging, please confirm that Q1 (knob switch) in the rear electrical console is turned off. 2. Insert the plug of the charger into the Q2 charging interface in the electrical control panel at the rear of the car; 3. Connect the charger to the power supply and turn on the charger switch to enter the charging state.
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Note: It currently takes about 3 hours for the battery to fully charge from 22V, and the battery full charge voltage is about 29.2V (the battery voltage here is a ternary lithium battery type, if the battery type is lithium iron phosphate, the maximum voltage is 26.8V); charging Time calculation 30aH÷10A=3H
3.2.2
Battery
replacement

SCOUT2.0 adopts a detachable battery solution for the convenience of users. In some special cases, the battery can be replaced directly. The operation steps and diagrams are as follows (before operation, ensure that SCOUT2.0 is power- off): Open the upper panel of SCOUT2.0, and unplug the two XT60 power connectors on the main
control board (the two connectors are equivalent) and the battery CAN connector; Hang SCOUT2.0 in midair, unscrew eight screws from the bottom with a national hex wrench,
and then drag the battery out; Replace the battery and fixed the bottom screws. Plug the XT60 interface and the power CAN interface into the main control board, confirm that
all the connecting lines are correct, and then power on to test.
3.3
Communication
using
CAN

SCOUT 2.0 provides CAN interfaces for user customization. Users can use it to conduct command control over the vehicle body.
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3.3.1
CAN
cable
connection

SCOUT2.0 deliver with two aviation male plugs as shown in Figure 3.2. For wire definitions, please refer to Table 2.2.
3.3.2
Implementation
of
CAN
command
control

Correctly start the chassis of SCOUT 2.0 mobile robot, and turn on DJI RC transmitter. Then, switch to the command control mode, i.e. toggling S1 mode of DJI RC transmitter to the top. At this point, SCOUT 2.0 chassis will accept the command from CAN interface, and the host can also parse the current state of chassis with the real-time data fed back from CAN bus. For the detailed content of protocol, please refer to CAN communication protocol.
Figure 3.2 Schematic diagram of aviation plug male connector
3.3.3
CAN
message
protocol
Correctly start the chassis of SCOUT 2.0 mobile robot, and turn on DJI RC transmitter. Then, switch to the command control mode, i.e. toggling S1 mode of DJI RC transmitter to the top. At this point, SCOUT 2.0 chassis will accept the command from CAN interface, and the host can also parse the current state of chassis with the real-time data fed back from CAN bus. For the detailed content of protocol, please refer to CAN communication protocol.
Table 3.1 Feedback Frame of SCOUT 2.0 Chassis System Status
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Command Name

System Status Feedback Command

Sending node Receiving node

ID

Cycle (ms)

Receive-timeout (ms)

Steer-by-wire chassis

Decision-making control unit

0x151

20ms

None

Data length

0x08

Position

Function

Data type

Description

byte [0]

Current status of vehicle body

unsigned int8

0x00 System in normal condition 0x01 Emergency stop mode (not
enabled) 0x02 System exception

byte [1]

Mode control

unsigned int8

0×00 Standby mode 0×01 CAN command control mode
0×02 Serial port control mode 0×03 Remote control mode

byte [2] byte [3]

Battery voltage higher 8 bits
Battery voltage lower 8 bits

unsigned int16

Actual voltage × 10 (with an accuracy of 0.1V)

byte [4]

Reserved

–

0×00

byte [5]

Failure information

unsigned int8

Refer to Table 3.2 [Description of Failure Information]

byte [6]

Reserved

–

0×00

byte [7]

Count paritybit (count)

unsigned int8

0-255 counting loops, which will be added once everycommand sent

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Table 3.2 Description of Failure Information

Byte byte [4]

bit bit [0] bit [1] bit [2] bit [3] bit [4] bit [5] bit [6] bit [7]

Description of Failure Information
Meaning
Battery undervoltage fault (0: No failure 1: Failure) Protection voltage is 22V (The battery version with BMS, the protection power is 10%)
Battery undervoltage fault[2] (0: No failure 1: Failure) Alarm voltage is 24V (The battery version with BMS, the warning power is 15%)
RC transmitter disconnection protection (0: Normal 1: RC transmitter disconnected)
No.1 motor communication failure (0: No failure 1: Failure)
No.2 motor communication failure (0: No failure 1: Failure)
No.3 motor communication failure (0: No failure 1: Failure)
No.4 motor communication failure (0: No failure 1: Failure)
Reserved, default 0

Note[1]: Robot chassis firmware version V1.2.8 is supported by subsequent versions, and the previous version requires firmware upgrade to support
Note[2]: The buzzer will sound when the battery under-voltage, but the chassis control will not be affected, and the power output will be cut off after the under-voltage fault
The command of movement control feedback frame includes the feedback of current linear speed and angular speed of moving vehicle body. For the detailed content of protocol, please refer to Table 3.3.
Table 3.3 Movement Control Feedback Frame

Command Name

Movement Control Feedback Command

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Sending node Receiving node

Steer-by-wire chassis

Decision-making control unit

Date length

0×08

Position

Function

byte [0] byte [1]

Moving speed hi gher 8 bits
Moving speed lo wer 8 bits

byte [2] byte [3]

Rotation speed h igher 8 bits
Rotation speed l ower 8 bits

byte [4]

Reserved

byte [5]

Reserved

byte [6]

Reserved

byte [7]

Reserved

ID 0x221
Data type signed int16
signed int16 –

Cycle (ms)

Receive-timeout (ms)

20ms

None

Description
Actual speed × 1000 (with an accura cy of 0.001m/s)

Actual speed × 1000 (with an accura cy of 0.001rad/s)
0x00 0x00 0x00 0x00

The control frame includes control openness of linear speed and control openness of angular speed. For its detailed content of protocol, please refer to Table 3.4.
Table 3.4 Control Frame of movement Control Command

Command Name Sending node Receiving node

Control Command

ID

Cycle (ms)

Receive-timeout

(ms)

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Decision-making control unit

Chassis node

Date length

0×08

Position

Function

byte [0] byte [1]

Linear speed higher 8 bits
Linear speed lower 8 bits

byte [2] byte [3]

Angular speed higher 8 bits
Angular speed lower 8 bits

byte [4]

Reserved

byte [5]

Reserved

byte [6]

Reserved

byte [7]

Reserved

0x111

20ms

500ms

Data type

Description

signed int16

Vehicle moving speed, unit mm/s (effective value+ -1500)

signed int16

Vehicle rotation angular speed, unit mm/s (effective value+ -1500)

—

0x00

—

0x00

—

0x00

—

0x00

The mode setting frame is used to set the control interface of the terminal. For its detailed content of protocol, please refer to Table 3.5.
Table 3.5 Control mode setting frame

Command Name

Sending node Receiving node

Decision-making control unit
Date length

Chassis node 0×01

Control Mode Setting Command

ID

Cycle (ms)

Receive-timeout

(ms)

0×421

None

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Position byte [0]

Function Control mode

Date type unsigned int8

Description 0×00 Standby mode 0×01 CAN command mode enable

Description of control mode: In case the SCOUT 2.0 is powered on and the RC transmitter is not connected, the control mode is defaulted to standby mode. At this time, the chassis only receives control mode command, and does not respond other commands. To use CAN for control need to switch CAN command mode at first. If the RC transmitter is turned on, the RC transmitter has the highest authority, can shield the control of command and switch the control mode.
Status setting frame is use to clear the system errors. For its detailed content of protocol, please refer to Table 3.6.
Table 3.6 Status Setting Frame

Command Name

Sending node

Receiving node

Decisionmaking control
unit
Date length
Position

Chassis node
0×01 Function

byte [0]

Errors clearing command

Status Setting Command

ID

Cycle (ms)

0×441

None

Receivetimeout (ms)
None

Date type unsigned int8

Description
0×00 Clear all failure 0×01 Clear Motor 1 failure 0×02 Clear Motor 2 failure 0×03 Clear Motor 3 failure 0×04 Clear Motor 4 failure

[Note 3] Example data: The following data is only used for testing 1.The vehicle moves forward at 0.15m/s

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byte [0] 0x00

byte [1] 0x96

byte [2] 0x00

byte [3] 0x00

byte [4] 0x00

byte [5] 0x00

byte [6] 0x00

byte [7] 0x00

2.The vehicle steering 0.2rad/s

byte [0] 0x00

byte [1] 0x00

byte [2] 0x00

byte [3] 0xc8

byte [4] 0x00

byte [5] 0x00

byte [6] 0x00

byte [7] 0x00

The chassis status information will be feedback, and what’s more, the information about motor current, encoder and temperature are also included. The following feedback frame contains the information about motor current, encoder and motor temperature.
The motor numbers of the 4 motors in the chassis are shown in the figure below:

Figure 3.0 Schematic diagram Motor feedback ID Table 3.7 Motor Speed Current Position Information Feedback

Command Name

Sending node Receiving node

ID

Steer-by-wire chassis

Decision-making control unit

0x251~0x254

Control Command

Cycle (ms)

Receive-timeout (ms)

20ms

None

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Date length Position byte [0] byte [1] byte [2] byte [3] byte [4] byte [5] byte [6] byte [7]

0×08
Function
Motor speed higher 8 bits
Motor speed lower 8 bits
Motor current higher 8 bits Motor current lower 8 bits
Motor position highest bits
Motor position second-highest
bits
Motor position second-lowest
bits
Motor position lowest bits

Data type signed int16 signed int16
signed int32

Description Current speed of motor Unit RPM
Motor current Unit 0.1A
Current position of the motor Unit: pulse

Table 3.8 Motor temperature, voltage and status information feedback

Command Name
Sending node Receiving node

Motor Drive Low Speed Information Feedback Frame

ID

Cycle (ms)

Receive-timeout

(ms)

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Steer-by-wire chassis
Date length Position
byte [0] byte [1] byte [2] byte [3] byte [4] byte [5] byte [6] byte [7]

Decisionmaking control
unit
0×08
Function
Drive voltage higher 8 bits Drive voltage lower 8 bits
Drive temperature higher 8 bits
Drive temperature lower 8 bits
Motor temperature
Drive status
Reserved
Reserved

0x261~0x264

20ms

None

Data type

Description

unsigned int16 Current voltage of drive unit 0.1V

signed int16

Unit 1°C

signed int8
unsigned int8 –

Unit 1°C
See the details in [Table 3.9] 0x00 0x00

Table 3.9 Drive Status

Byte byte[5]

Bit bit[0] bit[1] bit[2]

Description Whether the power supply voltage is too low (0:Normal
1:Too low) Whether the motor is overheated (0:Normal 1:Overheated) Whether the drive is over current (0:Normal 1:Over current)

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bit[3] bit[4] bit[5] bit[6] bit[7]

Whether the drive is overheated (0:Normal 1:Overheated) Sensor status (0:Normal 1:Abnormal) Drive error status (0:Normal 1:Error)
Drive enable status (0:Normal 1:Disability) Reserved

The front and external lights also support command control. The following table shows the control commands:
Table 3.10 Light Control Frame

Command Name

Sending node Receiving node

Decisionmaking control
unit Date length
Position
byte [0]

Steer-by-wire chassis
0×08 Function
Light control enable flag

byte [1]

Front light mode

byte [2]

Custom brightness of
front light

Light Control Frame

ID

Cycle (ms)

Receive-timeout (ms)

0x121

20ms

None

Date type unsigned int8 unsigned int8
unsigned int8

Description
00×00 Control command invalid 0x01 Lighting control enable
0x00 Normally off 0x01 Normally open 0x02 Breathing light mode 0x03 Customer- defined brightness
[0, 100], where 0 refers to no brightness,100 refers to maximum
brightness[5]

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byte [3] byte [4] byte [5] byte [6] byte [7]

Rear light mode

Customize brightness for
rear light Reserved Reserved
Parity bit (checksum)

unsigned int8
unsigned int8
unsigned int8

0x00 Normally off 0x01 Normally open 0x02 Breathing light mode 0x03 Customer- defined brightness
[0, 100], where 0 refers to no brightness,100 refers to maximum
brightness[5] 0x00
0x00
0~255 loop count, the count is incremented every time an instruction is sent.

Note [5]: The values are valid for custom mode. Table 3.11 Light Control Feedback Frame

Command Name

Sending node Receiving node

Steer-by-wire chassis
Date length Position
byte [0]

Decision-making control unit
0×08
Function
Current lighting control enable
flag

Light Control Feedback Command

ID

Cycle (ms)

Receive-timeout (ms)

0x231

20ms

None

Date type unsigned int8

Description
00×00 Control command invalid 0x01 Lighting control enable

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byte [1] byte [2] byte [3] byte [4] byte [5] byte [6] byte [7]

Current front light mode
Current custom brightness of front light
Current rear light mode
Current custom brightness of rear light Reserved Reserved
Parity bit (checksum)

unsigned int8
unsigned int8
unsigned int8
unsigned int8
unsigned int8

0x00 Normally off 0x01 Normally open 0x02 Breathing light mode 0x03 Customer- defined brightness
[0, 100], where 0 refers to no brightness ,100 refers to maximum
brightness
0x00 Normally off 0x01 Normally open 0x02 Breathing light mode 0x03 Customer- defined brightness
[0, 100], where 0 refers to no brightness ,100 refers to maximum
brightness
0x00
0x00
0~255 loop count, the count is incremented every time an instruction is sent.

Table 3.12 System Version Information Enquiry Frame

Command Name

Sending node Receiving node

Decision-making control unit
Date length

Chassis node 0×01

System Version Information Enquiry Command

ID

Cycle (ms)

Receive-

timeout (ms)

0x411

None

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Position byte [0]

Function
Enquire system version

Date type unsigned int8

Description Constant 0×01

Table 3.13 System Version Information Enquiry Frame

Command Name
Sending node Steer-by-wire
chassis Date length
Position byte [0] byte [1] byte [2] byte [3]

System Version Information Feedback Frame

Receiving node

ID

Cycle (ms)

Receive-timeout (ms)

Decision-making control unit

0x41A

None

0×08

Function

Date type

Description

The number of main control hardware version higher 8 bits
The number of main control hardware version lower 8 bits

unsigned int16

Higher 8 bits is the main version number,
lower 8 bits is the second version number

The number of drive hardware version higher 8
bits
The number of drive hardware version lower 8
bits

unsigned int16

Higher 8 bits is the main version number,
lower 8 bits is the second version number

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byte [4] byte [5] byte [6] byte [7]

The number of main control software version higher 8 bits
The number of main control software version lower 8 bits

unsigned int16

Higher 8 bits is the main version number,
lower 8 bits is the second version number

The number of drive software version higher 8
bits

unsigned int16

The number of drive software version lower 8 bits

Higher 8 bits is the main version number,
lower 8 bits is the second version number

Table 3.14 Mileometer Information Feedback

Command Name

Sending node

Receiving node

Steer-by-wire chassis
Date length
Position

Decision-making control unit
0×08
Function

Mileometer Information Feedback

ID

Cycle (ms)

Receive-timeout

(ms)

0x311

20ms

None

Data type

Description

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byte [0] byte [1 byte [2] byte [3] byte [4] byte [5] byte [6] byte [7]

Left wheel mileometer highest bit
Left wheel mileometer second-highest bit
Left wheel mileometer second-highest bit
Left wheel mileometer lowest bit
Right wheel mileometer highest bit
Right wheel mileometer second-
highest bit
Right wheel mileometer second-
highest bit
Right wheel mileometer lowest bit

signed int32
signed int32

Chassis left wheel mileometer feedback Unit:mm
Chassis right wheel mileometer feedback Unit:mm

Table 3.15 Remote Control Information Feedback

Command Name

Remote Control Information Feedback Frame

Sending node Receiving node

ID

Cycle (ms)

Receive-timeout (ms)

Steer-by-wire chassis

Decision-making control unit

0x241

20ms

None

Date length

0×08

Position

Function

Data type

Description

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byte[0] byte[1] byte[2] byte[3] byte[4] byte[5] byte[6] byte[7]

SW feedback

unsigned int8

Right joystick left and right

signed int8

Right joystick up and down

signed int8

Left joystick up and down

signed int8

Left joystick left and right

signed int8

Left knob VRA

signed int8

Reserved

—

Count Parity bit unsigned int8

bit[0-1]: SWA: 2- Up 3-Down bit[2-3]: SWB : 2-Up 1-Middle 3-
Down bit[4-5]: SWC : 2-Up 1-Middle 3-
Down
bit[6-7]: SWD 2-Up 3-Down
Range[-100,100] Range[-100,100] Range[-100,100] Range[-100,100] Range[-100,100] 0x00
0~255 Loops counting

Command Name Sending node Receiving node

Steer-by-wire chassis

Decision-making control unit

Date length Position

0×08 Function

BMS Data Feedback

ID

Cycle (ms)

Receive-timeout (ms)

0x361

500ms

None

Data type

Description

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byte[0] byte[1] byte[2] byte[3] byte[4] byte[5] byte[6] byte[7]

Battery SOC

unsigned int8

Battery SOH

unsigned int8

Battery voltage higher 8 bits

unsigned int16

Battery voltage lower 8 bits

signed int8

Battery current higher 8 bits

signed int16

Battery current lower 8 bits

signed int8

Battery temperat ure higher 8 bits
Battery temperat ure lower 8 bits

signed int16

Range 0~100 Range 0~100
Unit: 0.01V Unit: 0.01V Unit: 0.1A Unit: 0.1A
Unit: 0.1°C

Firmware upgrades

In order to facilitate users to upgrade the firmware version used by SCOUT 2.0 and bring customers a more complete experience, SCOUT 2.0 provides a firmware upgrade hardware interface and corresponding client software.
Upgrade
Preparation
Agilex CAN debugging module X 1 Micro USB cable X 1 SCOUT 2.0 chassis X 1 A computer (WINDOWS OS (Operating System)) X 1
Upgrade
Process
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1.Plug in the USBTOCAN module on the computer, and then open the AgxCandoUpgradeToolV1.3_boxed.exe software (the sequence cannot be wrong, first open the software and then plug in the module, the device will not be recognized). 2.Click the Open Serial button, and then press the power button on the car body. If the connection is successful, the version information of the main control will be recognized, as shown in the figure.
3.Click the Load Firmware File button to load the firmware to be upgraded. If the loading is successful, the firmware information will be obtained, as shown in the figure
38 / 48

4.Click the node to be upgraded in the node list box, and then click Start Upgrade Firmware to start upgrading the firmware. After the upgrade is successful, a pop-up box will prompt.
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3.6
SCOUT
2.0
SDK
usage
example

In order to help users implement robot-related development more conveniently, a cross-platform supported SDK is developed for SCOUT 2.0 mobile robot.SDK software package provides a C++ based interface, which is used to communicate with the chassis of SCOUT 2.0 mobile robot and can obtain the latest status of the robot and control basic actions of the robot. For now, CAN adaptation to communication is available, but RS232-based adaptation is still under way.Based on this, related tests have been completed in NVIDIA JETSON TX2.
3.7
SCOUT2.0
ROS
Package
usage
example

ROS provide some standard operating system services, such as hardware abstraction, low-level device control, implementation of common function, interprocess message and data packet management. ROS is based on a graph architecture, so that process of different nodes can receive, and aggregate various information (such as sensing, control, status, planning, etc.) Currently ROS mainly support UBUNTU.
Development
Preparation
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Hardware
preparation CANlight can communication module ×1 Thinkpad E470 notebook ×1 AGILEX SCOUT 2.0 mobile robot chassis ×1 AGILEX SCOUT 2.0 remote control FS- i6s ×1 AGILEX SCOUT 2.0 top aviation power socket ×1 Use
example
environment
description
Ubuntu 18.04 ROS Git
Hardware
connection
and
preparation

Lead out the CAN wire of the SCOUT 2.0 top aviation plug or the tail plug, and connect CAN_H and CAN_L in the CAN wire to the CAN_TO_USB adapter respectively;
Turn on the knob switch on the SCOUT 2.0 mobile robot chassis, and check whether the
emergency stop switches on both sides are released
Connect the CAN_TO_USB to the usb point of the notebook. The connection diagram is shown in Figure 3.4.
Figure 3.4 CAN connection diagram
ROS
installation
and
environment
setting
For installation details, please refer to http://wiki.ros.org/kinetic/Installation/Ubuntu
Test
CANABLE
hardware
and
CAN
communication
Setting CAN-TO-USB adaptor
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Enable gs_usb kernel module $ sudo modprobe gs_usb

Setting 500k Baud rate and enable can-to-usb adaptor $ sudo ip link set can0 up type can bitrate 500000

If no error occurred in the previous steps, you should be able to use the command to view the can device immediately

$ ifconfig -a

Install and use can-utils to test hardware $ sudo apt install can-utils

If the can-to-usb has been connected to the SCOUT 2.0 robot this time, and the car has been turned on, use the following commands to monitor the data from the SCOUT 2.0 chassis

$ candump can0

Please refer to: [1] https://github.com/agilexrobotics/agx_sdk [2] https://wiki.rdu.im/_pages/Notes/Embedded-System/-Linux/can-bus-in-linux.html

AGILEX
SCOUT
2.0
ROS
PACKAGE
download
and
compile

Download ros package

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$ sudo apt install -y libasio-dev $ sudo apt install -y ros-$ROS_DISTRO- teleop-twist-keyboard
Clone compile scout_ros code
$ cd ~/catkin_ws/src $ git clone https://github.com/agilexrobotics/ugv_sdk.git $ git clone https://github.com/agilexrobotics/scout_ros.git $ cd .. $ catkin_make
Please refer to https://github.com/agilexrobotics/scout_ros

Start
the
ROS
node

Start the based node
$ roslaunch scout_bringup scout_robot_base.launch

Start the keyboard remote operation node $ roslaunch scout_bringup scout_teleop_keyboard.launch

Github ROS development package directory and usage instructions
_base:: The core node for the chassis to send and receive hierarchical CAN messages. Based on the communication mechanism of ros, it can control the movement of the chassis and read the status of the bunker through the topic.
_msgs: Define the specific message format of the chassis status feedback topic.
*_bringup: startup files for chassis nodes and keyboard control nodes, and scripts to enable the usb_to_can module.

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4
Q&A

Q:
SCOUT
2.0
is
started
up
correctly,
but
why
cannot
the
RC
transmitter
control
the
vehicle
body
to
move? A: First, check whether the drive power supply is in normal condition, whether the drive power switch is pressed down and whether E-stop switches are released; then, check whether the control mode selected with the top left mode selection switch on the RC transmitter is correct.
Q:
SCOUT
2.0
remote
control
is
in
normal
condition,
and
the
information
about
chassis
status
and
movement
can
be
received
correctly,
but
when
the
control
frame
protocol
is
issued,
why
cannot
the
vehicle
body
control
mode
be
switched
and
the
chassis
respond
to
the
control
frame
protocol? A: Normally, if SCOUT 2.0 can be controlled by a RC transmitter, it means the chassis movement is under proper control; if the chassis feedback frame can be accepted, it means CAN extension link is in normal condition. Please check the CAN control frame sent to see whether the data check is correct and whether the control mode is in command control mode. You can check the status of error flag from the error bit in the chassis status feedback frame.
Q:
SCOUT
2.0
gives
a
“beep-beep-beep…”
sound
in
operation,
how
to
deal
with
this
problem? A: If SCOUT 2.0 gives this “beep-beep-beep” sound continuously, it means the battery is in the alarm voltage state. Please charge the battery in time. Once other related sound occur, there may be internal errors. You can check related error codes via CAN bus or communi-cate with related technical personnel.
Q:Is
the
tire
wear
of
SCOUT
2.0
is
normally
seen
in
operation? A: The tire wear of SCOUT 2.0 is normally seen when it is running. As SCOUT 2.0 is based on the four-wheel differential steering design, sliding friction and rolling friction both occur when the vehicle body rotates. If the floor is not smooth but rough, tire surfaces will be worn out. In order to reduce or slow down the wear, small-angle turning can be conducted for less turning on a pivot.
Q:
When
communication
is
implemented
via
CAN
bus,
the
chassis
feedback
command
is
issued
correctly,
but
why
does
not
the
vehicle
respond
to
the
control
command?
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A: There is a communication protection mechanism inside SCOUT 2.0, which means the chassis is provided with timeout protection when processing external CAN control commands. Suppose the vehicle receives one frame of communication protocol, but it does no receive the next frame of control command after 500ms. In this case, it will enter communication protection mode and set the speed to 0. Therefore, commands from upper computer must be issued periodically.
5
Product
Dimensions

5.1
Illustration
diagram
of
product
external
dimensions
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6.2
Illustration
diagram
of
top
extended
support
dimensions
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Brand of the group
Official Distributor gr@generationrobots.com
+33 5 56 39 37 05 www.generationrobots.com