CHI-ME-101 Impact Drill Veritable

Product Information

Specifications

• Circa.E2 Revision: 2 21ST MAY 2024
• Sensor Overview:
  • Internal optical spectrometer location: 30mm
  • Internal Bluetooth module location
  • Internal LED location
  • Clear optical diffuser
  • Input power(+) Ground(-)
  • Charging contacts (x2)
  • Magnet under surface for attachment to charger
• Charger Overview:
  • Magnet under surface to hold sensor in place
  • USB C port on this side
  • Input power(+) Ground(-)
  • Sensor charging spring contacts
  • Reset button
  • USB C port

Product Usage Instructions

Charging

Charging Process:

1. Connect charger to an appropriate USB power supply via a USB
   cable.

2. Place sensor onto recess in charger ensuring the diffuser
   window lines up with the finger recess in the charger.

3. The sensor status light will illuminate red for 1 second then
   turn off, indicating charging has started.

4. Leave sensor on charger for approximately 3.5 hours to complete
   the charge.

5. Once charging is finished, the status LED will flash green for
   1 second.

6. The device may now be removed from the charger.

Sensor Reset

Sensor Reset Process:

1. Connect the charger to an appropriate USB power supply via a
   USB cable.

2. Place the sensor onto the recess in the charger ensuring the
   diffuser window aligns with the finger recess.

3. Using a small object (like an unfolded paper clip), press and
   hold the reset button for 10 seconds.

4. The sensor status LED should briefly flash white, indicating a
   successful reset.

5. The sensor can now be removed from the charger and paired to a
   new device via Bluetooth.

FAQ

Q: How long does it take to charge the sensor?

A: The charging process should take
approximately 3.5 hours to complete.

Q: How do I know when the sensor is fully charged?

A: Once charging is finished, the status LED
will flash green for 1 second.

PRODUCT SPECIFICATION
Circa.E2 Revision: 2 21ST MAY 2024

PRODUCT DETAILS
Product overview Sensor Overview Charger Overview Sensor Charging Sensor Reset

PRODUCT OVERVIEW
· The product consists of 2 main parts, including a sensor and charger.
· The sensor is designed to be worn on a user’s clothing and record their exposure to light throughout the course of the day.
· The sensor is always on and therefore does not have an on/off button or switch.
· Light exposure data is logged to an internal flash memory chip.
· The sensor has BLE connectivity to communicate with an iOS app to transfer logged data.
· An integrated magnet is used for attachment to the user’s clothing.
· The charger enables the sensor to be charged via USB C connection and includes a built in `reset’ button to delete Bluetooth pairing.

Sensor Charger
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SENSOR OVERVIEW

Internal optical spectrometer location
30mm

Internal Bluetooth module location
Internal LED location

Clear optical diffuser
Input power(+) Ground(-)

Charging contacts (x2)

27.1mm

9.7mm
Magnet under surface for attachment to charger

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CHARGER OVERVIEW

Magnet under surface to hold sensor in place

USB C port on this side

13.6mm 49.1mm

46.2mm

Input power(+) Ground(-)

Sensor charging spring contacts

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Reset button

USB C port

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CHARGING
Charging Process 1. Connect charger to an appropriate USB power
supply via a USB cable 2. Place sensor onto recess in charger. Note the
diffuser window should line up with the finger recess in the charger 3. Sensor status light will illuminate red for 1 second then turn off. This indicates that charging has started. 4. Leave sensor on charger for duration of charge. This should take approx. 3.5hrs to complete. 5. Once charging is finished, the status LED will flash green for 1 second. 6. Device may now be removed

Place sensor onto charger in this orientation
Status LED glows red to indicate charging has begun
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SENSOR RESET
Sensor Reset Process 1. Connect charger to an appropriate USB power supply
via a USB cable 2. Place sensor onto recess in charger. Note the diffuser
window should line up with the finger recess in the charger 3. Using a small object (like an unfolded paper clip) press the reset button and hold for 10 seconds(*) The hold time can be changed without any notice. 4. The sensor status LED should briefly flash white, indicating that the sensor has been successfully reset. 5. You may now remove the sensor from the charger and pair to a new device via Bluetooth

Place sensor into charger before resetting

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Insert small object (like a paperclip) into hole to press reset button
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ELECTRONIC BOARDS SPECIFICATION
Electrical characteristic Sensor board Charger board

ELECTRICAL CHARACTERISTIC

Attribute Power Battery capacity Current consumption
Main platform Connectivity Indicator LED

Charging input Voltage / Current Digital I/O voltage Charger IC Battery voltage range Battery cut-off threshold Battery capacity Advertising Connection Flash erase BLE Module BLE SoC Flash RAM Core
RGB LED

Value 5V / 500mA 1.8V
nPM1100 3.0 ­ 4.2V 3.0V 65mAh 0.5 ­ 0.6mA 0.6 ­ 0.8mA 3.2 ­ 3.5mA MDBT42V- 512KV2 nRF52832 512KB 64KB 64 MHz Cortex-M4 with FPU Bluetooth Low Energy Red : Vf = max 2.4V, If = 10mA Green : Vf = max 3.1V, If = 5mA Blue : Vf = max 3.3V, If = 5mA

Remark USB-C connector Li-ion battery charger
Raytac Nordic Semiconductor
2.4GHz ISM band Iv = 25 ­ 80mcd Iv = 140 ­ 180mcd Iv = 30 ­ 50mcd

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SENSOR BOARD PCBA

TOP layer

BOTTOM layer

Spectrometer

Battery contacts

Programming PIN

5 GND 4 SCLK 3 SWD 2 VREF 1 VBUS

Ground SWDCLK SWDIO V out : 1.8V V in : 5V

BLE Module

RGB LED
+ Charger contact
point –

UART PIN

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Flash memory

Charger IC

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CHARGER BOARD PCBA

TOP layer
USB-C Connector

Tactile Switch

BOTTOM layer

• Charger contact
  point –

555 timer
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ELECTRONIC BOARDS PROGRAMMING
Programming tool How to program

PROGRAMMING TOOL

Software tool 1. Nordic serial command line tools
nRF Command Line Tools – Downloads – nordicsemi.com 2. Programming batch file 3. Test specification with serial number generator

Hardware tool 1. J-Link or J-link OB 2. Clip programmer (Pogo probe)
Pogo probe

Programming PIN

5 GND 4 SCLK 3 SWD 2 VREF 1 VBUS

Ground SWDCLK SWDIO V out : 1.8V V in : 5V

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HOW TO PROGRAM FIRMWARE

1. Prepare the programming tool – J-Link or J-Link OB
2. Prepare the firmware programming program – nRF connect programmer – Firmware package – Custom binary generator
3. Connect the programming tool to PCBA 4) Use the serial number generator to get the serial numbers 5) Run the batch file to program the merged firmware and write the serial number in UICR memory.
   – Batch file command Circa_programming [hex file name] [serial number] – e.g) Circa_programming mieye_GH_0.15_merge.hex 0x080C0071

• Refer to the test specification for full function test including the firmware programming
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BLUETOOTH FUNCTION
nRF Connect for Mobile APP CTS server setting Bluetooth connection Bluetooth services Spectro service mode

nRF CONNECT for Mobile APP

nRF Connect for Mobile APP
1. Download the nRF Connect for Mobile’ app for your smartphone or tablet. (This app is used to communicate to the sensor via Bluetooth.) 2\. Open the app and add the CTS server in Configure GATT server. 3\. Scan the device by pressSCAN’ and find your sensor in the list of nearby Bluetooth devices. The device name should have the following format: “CIRCA#####”
4. Press `CONNECT’ to connect to the device. 5. When new tab is created, press the 3-dots button which
is for setting option.
6. Press “Discover services” in the setting option. 7. You can find 2 services
1. Battery service (UUID 0x180F) 2. Unknown service (UUID e23f1580-……) 8. Unknown service is “Spectro service” with the spectral data reading and mode selection.
· Please refer to the next pages for more details with screen shots.
· Screen shots can be different by the Android / iOS phones.

nRF Connect for Mobile

App menu

Scan button

Device name filter

Nearby Bluetooth device name

3-dots button (Setting option)
Connect Button
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nRF CONNECT for Mobile APP : CTS SERVER
CTS (Current Time Service) server setting
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nRF CONNECT for Mobile APP : CONNECTION
1. To connect the device, press “Connect button” 2. Status LED glows blue to indicate the connection. 3. Then press “Discover service” in the setting option, to
discover all Bluetooth services.
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nRF CONNECT for Mobile APP : SERVICES

Battery service

Spectro service (displayed as Unknown service)

Spectral data service

Device mode

AS7341 Auto-gain setting

Astep

AS7341 Atime

Rep_rate

Log_rate
Battery Charging status

Device Colour

Used flash memory pages
Max Flash Memory

Accelerometer setting (Scale, threshold, duration

Command service In command service, you can receive the status data from the device.
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nRF CONNECT for Mobile APP : SERVICES

Battery service

Spectro service (displayed as Unknown service)

Spectral data service

Command service

Device mode

AS7341 Auto-gain setting

Astep

AS7341 Atime

Rep_rate Log_rate

Firmware Version

Battery Charging status

Device Colour

Max

Accelerometer

Flash Used flash

setting

Memory memory pages (Scale, threshold, duration)

Serial Number

In command service, you can receive the status data from the device.
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nRF CONNECT for Mobile APP : LIVE MODE
Live mode 1. Live mode is to see the spectral data in real time. 2. To enter the live mode, the mode change command(0A)
should be sent to the device in the command service. 3. In the live mode, spectral data is appeared in the
specral data service.

The mode is changed from Idle mode (09) to live mode (0A)

Live mode

Spectral data
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nRF CONNECT for Mobile APP : LOG MODE
Log mode 1. The Log mode is to record the spectral data in the flash
memory. 2. To enter the log mode, the mode change command(0C)
should be sent to the device in the command service. 3. After 8 spectral data are read, they are written in one
page of the flash memory, and it increases the used flash memory.

C

Log mode

Used Flash memory

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nRF CONNECT for Mobile APP : CLEAR LOG
Clear Log 1. The Clear Log command is to clear the flash memory. 2. The mode change command(15) should be sent to the device in the
command service. 3. After this, the device enters in the busy mode and Status LED
blinks in bright purple every one second until the flash memory is cleared fully. 4. In the busy mode, no command entry is available.
15
Busy mode
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nRF CONNECT for Mobile APP : SHIPPING MODE
Shipping mode 1. The shipping mode command is to delete the bond and put the
device into the sleep mode. 2. The mode change command(D2) should be sent to the device in
the command service. 3. After this, the device deletes the current bonds and enters the
sleep mode. Automatically, BLE connection will be lost. 4. If the board is on the charger board and detects the charging
voltage, it wakes up automatically.
D2
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FCC War ni ng
Thi s equi pment has been t est ed and f ound t o compl y wi t h t he l i mi t s f or a Cl ass B di gi t al devi ce, pur suant t o par t 15 of t he FCC Rul es. These l i mi t s ar e desi gned t o pr ovi de r easonabl e pr ot ect i on agai nst har mf ul i nt er f er ence i n a r esi dent i al i nst al l at i on. Thi s equi pment gener at es, uses and can r adi at e r adi o f r equency ener gy and, i f not i nst al l ed and used i n accor dance wi t h The i nst r uct i ons, may cause har mf ul i nt er f er ence t o r adi o communi cat i ons. However , t her e I s no guar ant ee t hat i nt er f er ence wi l l not occur i n a par t i cul ar i nst al l at i on. I f t hi s Equi pment does cause har mf ul i nt er f er ence t o r adi o or t el evi si on r ecept i on, whi ch can be det er mi ned by t ur ni ng t he equi pment of f and on, t he use r i sen cour aged t o t r y t o cor r ect t he I nt er f er ence by one or mor e of t he f ol l owi ng measur es: Reor i ent or r el ocat e t he r ecei vi ng ant enna. I ncr ease t he separ at i on bet ween t he equi pment and r ecei ver . Connect t he equi pment i nt o an out l et on a ci r cui t di f f er ent f r om t hat t o whi ch t he r ecei ver i s connect ed. Consul t t he deal er or an exper i enced r adi o/ TV t echni ci an f or hel p.
Caut i on: Any changes or modification t o t hi s devi ce not expl i ci t l y appr oved by manuf act ur er coul d
voi d your aut hor i t y t o oper at e t hi s equi pment .
Thi s devi ce compl i es wi t h par t 15 of t he FCC Rul es. Oper at i on i s subj ect t o t he f ol l owi ng t wo condi t i ons: ( 1) Thi s devi ce may not cause har mf ul i nt er f er ence, and( 2) t hi s devi ce must accept any i nt er f er ence r ecei ved, i ncl udi ng i nt er f er ence t hat may cause undesi r ed oper at i on.
The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.
IC Caution: Radio Standards Specification RSS-Gen, issue 5 – English: This device contains licence-exempt transmitter(s)/receiver(s) that comply with Innovation, Science and Economic Development Canada’s licence-exempt RSS(s). Operation is subject to the following two conditions: This device may not cause interference. This device must accept any interference, including interference that may cause undesired operation of the device. RF exposure statement: The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.
– French: Cet appareil contient des émetteurs / récepteurs exemptés de licence conformes aux RSS (RSS) d’Innovation, Sciences et Développement économique Canada. Le fonctionnement est soumis aux deux conditions suivantes: Cet appareil ne doit pas causer d’interférences. Cet appareil doit accepter toutes les interférences, y compris celles susceptibles de provoquer un fonctionnement indésirable de l’appareil. Déclaration d’exposition RF: L’appareil a été évalué pour répondre aux exigences générales d’exposition aux RF. L’appareil peut être utilisé dans des conditions d’exposition portable sans restriction.

References

• Nordic Semiconductor | Empowering Wireless Innovation - nordicsemi.com
• nRF Command Line Tools - Downloads - nordicsemi.com

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