MODSTER EC-135 Scale RC Helicopter Electric RTF User Manual

MODSTER EC-135 Scale RC Helicopter Electric RTF

Introduction

Thank you very much for choosing this product. It has been produced, tested and packaged with care in accordance with the applicable European regulations. Please unpack the contents carefully. Please check immediately upon receipt whether all parts included in the scope of delivery are present and whether there is any transport damage. If there is cause for complaint, please contact us immediately.

Safety instructions

Please read all enclosed instructions carefully before assembly and first use!
You will receive important instructions for the use of the product. Keep these instructions for information or for ordering spare parts. If you are operating remote-controlled model airplanes, helicopters, cars or ships for the first time, we recommend that you ask an experienced model pilot for help.

1. recommended age of users: Not suitable for children under 14 years old.
2. make sure you have enough space to operate the product.
3. follow the instructions and warnings to avoid any damage.
4. it must be kept away from chemicals. Small parts and electrical equipment must be out of the reach of children.
5. keep it away from water as this product has no waterproof function.
6. do not put any parts into the mouth as it may cause injury or death.
7. do not operate the model when the battery of the transmitter has low voltage.
8. do not look into the beam of the light emitting diodes, as this will impair your eyesight.
9. the motor and electrical equipment become hot after flight. Please do not touch them to avoid burns.
10. do not reach into the rotor blades during operation to avoid injury.
11. do not fly in wet weather or rain
12. observe the necessary safety distance to buildings and people
13. perform a functional check before each flight, failure to do so will void the warranty/guarantee.
14. pay attention to the special instructions for charging the batteries, there is a risk of fire.

Package contents

Before you start building, please check the parts for quality and completeness. If any part is missing or damaged, or if you have any questions, please contact us:

MSG Online GmbH
E-mail: info@modster.at
Web: www.modster.at
Business Park 9
A-8530 Deutschlandsberg
Phone: +43 (0) 3462 2541 -100
Fax: +43 (0) 3462 2541 310

What in the box

Warranty disclaimer

• Keep the battery pack away from children.
• Be careful when handling battery packs with high cell counts. It is essential to ensure good insulation, there is a risk of electric shock.
• Do not allow leaking electrolyte to come into contact with fire, it is highly flammable and can ignite. In the event of an explosion or fire, never extinguish the batteries with water. Only extinguish with dry extinguishing agent (sand, etc.) or smother the flames by covering.
• The electrolyte liquid should not get into the eyes, if it does, wash it out immediately with plenty of clean water and then consult a doctor.
• The electrolyte fluid can also be washed off clothing and other objects with plenty of water.
• Do not expose lithium batteries to excessive cold or heat and direct sunlight. Do not heat the battery, throw it into a fire or place it in the microwave. Charge and store batteries in a fireproof container or lithium safe (e.g. AN-262582).
• Do not subject battery to pressure or impact, deform or throw. Protect from accident or fall. Never use damaged batteries and dispose of them properly.
• Never place the charger or connected batteries on flammable or conductive surfaces. Never operate in the vicinity of flammable materials or gases. Charging the battery in the model can cause the model to burn down in case of a defect! Do not leave the battery unattended during the charging-discharging process or during operation.
• Read the charger instructions carefully before charging.
• Do not charge batteries which are strongly heated or undercooled. Allow batteries to cool down to approx. 20-30°C or warm them up before charging.
• Only cells of the same capacity and make may be charged together.
• Make absolutely sure that the polarity of the batteries is correct and prevent short-circuits, especially through non-insulated connector systems.
• In case of contact with water or penetration of moisture into the battery, there is a risk of explosion due to short-circuiting.
• Do not charge with reverse polarity.
• Do not solder directly to the battery.
• Do not modify or open battery.
• Do not charge batteries above 4.2 volts (+/-0.05V) per cell and do not discharge below 3 volts per cell.
• Charge batteries only with suitable lithium battery chargers with connected or built-in equalizer/balancer, never connect directly to a power supply.
• Do not use the battery in locations subject to high static discharge.
• All this can cause the battery to be damaged, explode or catch fire.
• Never charge batteries unattended!
• Never charge, store or keep the battery in the model or inside a car.

Charging procedure

Only use chargers that have been expressly approved by the manufacturer for use with lithium batteries. Lithium batteries can only be charged using the CC-CV charging procedure. Make sure that the charger is correctly selected. In the first charging phase, the charger keeps the charging current constant. With a charging current of 1C and a discharged battery, this first phase takes approx. 50- 60 minutes. A battery capacity of approx. 80-90% is charged. When the end-of-charge voltage of 4.2 volts/cell is reached, only the voltage is kept constant and the charge current drops. A further 35-40 minutes are required to charge the remaining capacity. If the value reaches the lower current limit of approx. 5-10% of the specified charging current, the charging process is switched off by the charging device. At a charge rate of 1C, this means that the entire charging process takes approx. 90 minutes when the battery is discharged. A lower charging current of 0.3-0.5 C is recommended for the first charging process. This measure facilitates balancing and increases the service life of the battery.

Voltage sensor cable

Due to different cell temperatures during the discharge process, the individual cells gradually acquire different charge states and voltage levels. The total charge voltage applied is then not distributed evenly across the individual cells, which means that cells with a higher voltage level can be overcharged. To measure the individual cell voltage, the lithium batteries have a separate plug connection (voltage sensor cable), from which a cable leads to each individual cell. The black cable (Pin1) is the negative terminal of the first cell, Pin2 the positive terminal. The next contact in each case is the respective positive pole of the subsequent cell.

Connect the voltage sensor cable to the Equalizer/Balancer connector on the charger for charging, which conveniently and automatically brings all cells to the same voltage value at the same time.

In addition, the voltage of each individual cell is monitored.

Connect the voltage sensor cable to the Equalizer/Balancer connector on the charger for charging, which conveniently and automatically brings all cells to the same voltage value at the same time.
In addition, the voltage of each individual cell is monitored.

Technical data:

Rated voltage: 3.7 volts/cell
Low charge rates protect the battery, high charge rates reduce the number of cycles by approx. 10%.
End-of-charge voltage: 4.2 volts/cell (to be maintained to within 0.05 volts)

Discharge rate / discharge current:

Depending on battery type, e.g. a 25C battery can be discharged at a constant rate of 25C (25 times the rated capacity in Ah), and for a short time (for 3 seconds) up to 50C (twice the constant discharge rate).
Examples:
25C (discharge rate), means capacity value x C rate = discharge current.
25C-battery with 1000mAh (1Ah) x 25C = 25A discharge current continuous/50A short time
30C battery with 1000mAh (1Ah) x 30C = 30A discharge current duration/60A short-term
45C battery with 1000mAh (1Ah) x 45C = 45A discharge current duration/90A short-term

End of discharge voltage:

Lithium cells should be disconnected under load, at the latest at about 3 volts /cell. If the voltage falls below the limit, the cell may be destroyed, explode and start to burn.

Maximum temperatures

Charging: +45°C, discharging +60°C

Temperature behavior

Lithium cells have a distinct temperature curve.
At temperatures below 10…15°C the removable capacity is significantly lower than at 20…35°C. Even at higher temperatures (above 35…40°C) the removable capacity is noticeably lower.

The maximum external cell temperature should not be exceeded during both charging and discharging, otherwise the cell will suffer permanent damage in the form of capacity loss. If exceeded for a longer period of time, it will be destroyed and may explode and start to burn.

Self-discharge:

Lithium cells have an extremely low self-discharge rate (about 0.2% per day) and therefore can be stored for long periods without problems. If the voltage drops below 3 volts/cell, it is essential to recharge.
Deep discharge must be avoided, otherwise the cell will suffer permanent damage in the form of capacity loss and render the battery pack unusable.

Storage:

Before longer storage, the batteries should be charged to the storage voltage of approx. 3.8…3.9 volts/cell. After approx. 3-5 months they should be recharged. Never store or keep fully charged but only fully charge immediately before use. Store batteries in a fireproof lithium safe or tested lithium bag. Store and keep at room temperature (17-22°C).

Lifetime:

The theoretical life of a cell at low discharge currents, is approximately 500 charge/ discharge cycles. At medium discharge currents, the lifetime is lower and is only about 300 cycles. At high discharge currents, the number of cycles is in the range of 150- 200 cycles. At very high discharge currents even significantly lower. After that, the battery is used up and must be disposed of. If the lithium batteries are only discharged to approx. 70-75% during operation, they will thank you with a longer service life. Stop operation before a noticeable loss of power becomes apparent. Disconnect the battery from the load after operation to avoid further discharge.

Memory effect, cell capacity

Since lithium cells have no memory or lazy-battery effect, the discharge- charge (cycling, matching) required for NC and NiMH batteries is not necessary. Discharging before charging should also be avoided. Since the capacity of the lithium battery decreases slightly with each charge, this would cause unnecessary loss of capacity to the cell.

Interconnecting battery packs

Interconnecting lithium cells in series or parallel to increase voltage or capacity is problematic because of the differences in charge voltage and capacity. Only selected cells can be connected together to form a battery pack. For our lithium battery packs, only selected cells are connected together to form a battery pack.

Disposal of rechargeable batteries

Never dispose of rechargeable batteries in the household waste. To protect the environment, give defective or used batteries only discharged to the appropriate collection points. These are all sales points for batteries and rechargeable batteries, or municipal special waste collection points. To avoid short circuits, please tape off any bare contacts with adhesive tape.

Disclaimer

Since MODSTER cannot supervise the handling of the batteries, any liability and warranty is excluded.

Important Note

Please read the manual to learn the function of this product before operation. Damage to the product and potential personal injury may occur if you make an operational error.
This is a RC helicopter, not a toy. You should not only have a prudent operation, but also to have an operational basis. All children using it should be under adult supervision. The manual includes safety, operation and maintenance. In order to avoid causing damage or serious injury, please obey the instructions and warnings before you using this product.

Additional Safety Precautions And Warnings

• Recommended age of users: Not suitable for children under 14 years old.
• Operate it in an open space, away from the traffic and people.
• Obey the instructions and warnings, includes the use of optional equipment.
• It has to stay away from chemicals. Small parts and electric equipment must be out of the reach of children.
• Keep away from water because this product has no waterproof function.
• Do not put any parts in the mouth, it will cause injury or death.
• Don’t operate the model if the transmitter’s battery is in low voltage.
• Don’t view the beam of the light emitting diodes, it would effect the eyesight.
• The motor and electric equipment will be heat after flight. Please do not touch them to avoid scald.
• In order to avoid causing damage, please do not touch the high-speed.

Warning and the Guide of Using Battery

Note: Using the original factory USB charger can ensure charging safety. Suggest you use the original factory USB charger part, other chargers may cause battery- and property damage.

Warnings! The battery will fire, explode or leak if not strictly observing this item described below.:

1. Do not immerse the battery in water or seawater, and keep the battery in a cool dry environment during stands by period.
2. Keep all batteries out of the reach of little children. Consult a doctor immediately if a battery is swallowed.
3. Do not use or leave the battery near a heat source such as fire or heater.
4. Use the battery charger specifically for that purpose when recharging.
5. Do not reverse the positive (+) and negative (-) terminals.
6. Do not connect the battery to an electrical outlet.
7. Do not dispose the battery in fire or heat.
8. Do not short-circuit the battery by directly connecting the positive (+) and negative (-) terminals with metal objects such as wire.
9. Do not transport or store the battery together with metal objects such as necklaces, hairpins etc.
10. Do not strike or throw the battery against hard surface.
11. Do not directly solder the battery.
12. Do not unpack the battery with a nail or other sharp object.
13. Never disassembling the battery in any way.

Note: The battery can not be placed for a long time under full power and low power. Otherwise, the battery will not be charged or the battery will be wrapped. For long-term storage, please charge the battery to 3.7V and store it in a dry and safe place.

Helicopter Parameters

Battery Charging

1. Connect the USB cable to a computer USB port or a power adapter.
2. Connect the USBs other end (Type-C plug for Android) to the battery for charging.
3. During charging, the current battery level indicator will flash, and all our lights will remain solid when charging is complete.
4. Disconnect the charging connection after charging is complete.
5. Note: It is recommended to use a 5V 2A adapter for charging, as it
   

|
---|---
4 lights on| 100%
 3 lights on| 75%
2 lights on| 50%
1 light on| 25%
4 lights on flashing| Low Battery

Transmitter Functions

Caution:

1. The default factory setting is MODE2 with left-hand throttle. The remote controls blue light is on. Press the right-side trim button to switch to MODE1, indicated by the remote controls red and blue lights.
2. To calibrate the remote control’s joysticks, power on the remote control by pressing the left-side trim button. The remote control will emit three beeps. Keep the remote control still and it will automatically calibrate the joysticks.
3. The default setting for the trim buttons is small trim. Press the trim buttons to switch between small trim (two beeps) and large trim (one beep).

• Right-hand throttle Mode 1
  

• Left-hand throttle Mode 2 (Basic)
  

Switch to Mode 1

The factory default setting is MODE2 with left throttle. The blue light of the remote control will be on. To change to Mode 1, press and hold the trim button while turning on the remote control, which is indicated by the red and blue lights on the remote control.

Helicopter and remote control frequency binding

When purchasing the helicopter, the remote control is already bound to the helicopter at the factory and can be used directly. In other cases, please follow the binding instructions below.

1. Press and hold the right-side trim button of the remote control‘s auxiliary joystick while turning on the remote control to enter binding mode. The remote control will emit a beep sound upon power on, and the remote control‘s indicator light will flash quickly, indicating it has entered binding mode.
2. Power on the aircraft and turn on the battery switch. The aircraft‘s indicator light will flash yellow.

Keep the aircraft still within 0.5m from the remote control.
The remote control will emit two beeps, and the remote control‘s indicator light will remain solid. At the same time, the aircraft‘s indicator light will also return to a solid green, indicating successful binding.
If the binding process is unsuccessful, please repeat the above steps

Aircraft Status Indicator Light Explanation

1. Rapid yellow flashing: Aircraft self-checking. The aircraft should remain stationary until the self-check is completed.
2. Solid green: Downward visual optical flow mode. Limited to flying at a height of 8 meters.
3. Slow green flashing: Poor downward visual environment. Lower the flight altitude or change 4. the flying area. Solid red: Manual flight mode. Exercise close attention when flying manually.
4. Slow red flashing: Low-level battery warning. Control the aircraft within visual range.
5. Rapid red flashing: Critical-level battery warning. The aircraft will
6. initiate an automatic landing.

Gyroscope Calibration

After successful binding between the aircraft and the remote control, perform the following steps to calibrate the gyroscope. On the remote control (MODE2), hold the left joystick in the upper corner and the right joystick in the lower corner as shown in the diagram for 2-3 seconds. During this time, the aircraft‘s indicator light will flash yellow and then change to solid green, indicating that the calibration is complete.

During gyroscope calibration, it is important to place the aircraft on a level surface to ensure accurate flight. The gyroscope is already calibrated at the factory, so users do not need to calibrate it again unless they are unable to exit the initialization or if there is yaw drift in manual attitude mode. In such cases, recalibration is necessary. After successful calibration, the indicator light will provide prompts based on the current position of the remote control’s switch, as explained in the indicator light section.

Motor Start/Stop

Motor Start: Perform the throttle stick action to start the motor. Immediately release the stick after starting the motor. Push the throttle stick upward by more than 50%, and the aircraft will take off.

Motor Stop

There are two methods to stop the motor after it has started:

Method 1: After the aircraft has landed, move the throttle stick to the lowest position and hold it for at least 3 seconds to stop the motor.
Method 2: After the aircraft has landed, pull both joysticks inward simultaneously to stop the motor immediately. Release the sticks after the motor has stopped.

Aircraft Locking

Long press the lock button to hear two beeps for locking, and short press for one beep to unlock. Locking should not be performed while the aircraft is in the air, as it may cause the motors to stop and pose a risk of crashing.

Main Control Board Socket Diagram

Notes on Downward Vision Mode

Please pay attention to the surrounding flying environment. The vision system only serves as an auxiliary function under limited conditions. It cannot replace human judgment and control. Users should constantly be aware of the surrounding environment during flight, maintain control over the aircraft throughout the entire flight, and take responsibility for their actions.

The downward vision system relies on the camera to lock onto objects below and limits the takeoff altitude to 8 meters. Please avoid taking off from rooftops or flying over rooftops, as it may cause the downward vision to fail, resulting in aircraft drift. In such cases, immediately fly the aircraft back or switch to manual stability mode. The downward vision system cannot recognize surfaces without textured features and cannot function properly in environments with insufficient or excessive lighting. The following scenarios are where the downward vision system cannot work:

1. Solid color surfaces (e.g., solid black, solid white, solid red, solid green)
2. Surfaces with strong reflections or reflections
3. Water surfaces or surfaces of transparent objects
4. Surfaces of moving objects (e.g., above crowds, bushes, and grasses swaying in strong winds)
5. Scenes with rapidly changing lighting conditions
6. Surfaces that are exceptionally dark or exceptionally bright
7. Surfaces of materials that have strong absorption or reflection of infrared

Manual Mode Flight

Pressing the Manual Mode button will disable the optical flow flight mode. In this mode, the aircraft‘s status indicator light will remain solid red, and the altitude restriction will be lifted. The maximum flight speed can reach up to 10 meters per second. Please closely monitor the aircraft and operate with caution.
Pressing the throttle adjustment button on the remote control again will activate the optical flow mode, indicated by a solid green status indicator light on the aircraft.

One-Key Landing

During flight, long-press the One-Key Landing button, and the aircraft will initiate a landing at its current position. While landing, the remote control can still be used to control the aircraft. Pushing the throttle up during the landing process will cancel the landing. Alternatively, pressing the One-Key Landing button again will cancel the one key landing function.

Expert Inverted Flight Mode

This mode is designed for 3D aerobatic inverted flight training and should be conducted in open outdoor areas with calm or light wind conditions.
In manual mode, with the flight altitude above 9 meters, press the upper right One-Key Inverted Flight button. The remote control will emit two beeps. Quickly push the elevator stick forward or backward and immediately return it to the center position. The aircraft will automatically perform a 180-degree roll and enter inverted flight hover. In this mode, the helicopter‘s control input is the same as that of a 3D helicopter (pushing the throttle stick up will make the aircraft descend, pushing the elevator stick forward will make the aircraft move towards the tail).
Pressing the One-Key Inverted Flight button again and quickly moving the elevator stick will transition the aircraft from inverted flight to normal flight mode, restoring normal flight behavior.

Inverted flight: Forwarder & Backwarder Roll Only. No For Left & Right!

Pitch Setting

When users replace servos or other major components, it may alter the pitch setting. Correct pitch setting contributes to stable flight. Please follow the steps below for pitch setting.

1. Power on the aircraft and bind it with the remote control.
2. Long-press the lock button on the remote control to lock the aircraft with two beeps. Then long-press the pitch setting button to enter pitch setting mode with two beeps.
3. Use the joystick to adjust the corresponding servo until the aircraft‘s swashplate is level and the rotor blade angle is 0 degrees. Then, short-press the lock button on the remote control to unlock with a beep, exit the pitch setting mode, and save the settings.

Note: Pitch setting should be done under the guidance of an experienced individual. Incorrect pitch setting can result in reduced flight performance.

Common Troubleshooting

is in gyroscope self-checking state. Please place the aircraft on a stationary and flat surface.
The aircraft tilts to one side and cannot hover after takeoff.| Place the aircraft on a level tabletop or surface and recalibrate the gyroscope.
The aircraft experiences severe shaking.| Check for damaged rotor blades and replace them with new ones. Inspect the main shaft and cross-axis for any bending and replace them promptly.
The aircraft cannot be unlocked, and the indicator light flashes red rapidly.| **** The battery voltage is too low. Please fully charge the battery.
Unstable flight in strong wind conditions.| Fly in appropriate weather conditions. The aircraft is suitable for flying in wind conditions up to level 4.
No response from the helicopter after power on, slow flashing light.| Rebind the frequency. During rebinding, the aircraft should be placed horizontally.
Slow flashing green light in downward vision flight mode.| Ground environment may affect the performance of the downward vision system. Please test in a different environment.
No power-on sound when connecting power to the helicopter.| The speed controller may be faulty or the plug connection is poor.Replace the speed controller and inspect the plug for timely replacement.
Continuous beeping from the remote control during flight.| The aircraft voltage is low, triggering a level 1 alarm. Replace the AAA batteries in the remote control.

Declaration of Conformity

Customer Support

www.modster.at

References

• MODSTER

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