Correction of Breathalyzer Module (PCB) & Finalization of Vehicle Telematics Kit Ended

About the job

I am developing an embedded telematics system for vehicles based on a Raspberry Pi Zero 2 W.
The main kit already integrates multiple modules (accelerometer/gyroscope, GPS, humidity/temperature sensor, camera, OBD-II via UART, 4G SIM7600G-H, OLED SSD1309, NFC MFRC522, LiFePO4 battery with solar charging). It is designed for advanced telematics: driving data logging, fatigue detection via camera, and cloud connectivity.

A detachable personal breathalyzer module has also been designed (Figaro TGS822 + ADS1115 + ATtiny1614 + LEDs + buzzer + pogo pins). Each driver connects their module, performs the test, and the data is automatically sent to the kit.

I have already completed the routing of the breathalyzer module and most of the main kit. I now need a freelancer to:

Review and correct the breathalyzer PCB (schematic, routing, ATtiny programming, pogo pin/power integration).

Finalize the main kit PCB (check routing, ensure correct integration of all modules, and verify power supply reliability: USB-C + LiFePO4 + TP4056/TP5000).

Suggest improvements for component placement to make integration into a custom enclosure easier.

I work with Proteus and would prefer to continue with it. Current design files (schematic, PCB, BOM, sketches) will be provided.

Looking for an experienced PCB designer/embedded engineer available to finalize this project within a short timeframe.
I am developing an embedded telematics system for vehicles based on a Raspberry Pi Zero 2 W.
The main kit already integrates multiple modules (accelerometer/gyroscope, GPS, humidity/temperature sensor, camera, OBD-II via UART, 4G SIM7600G-H, OLED SSD1309, NFC MFRC522, LiFePO4 battery with solar charging). It is designed for advanced telematics: driving data logging, fatigue detection via camera, and cloud connectivity.

A detachable personal breathalyzer module has also been designed (Figaro TGS822 + ADS1115 + ATtiny1614 + LEDs + buzzer + pogo pins). Each driver connects their module, performs the test, and the data is automatically sent to the kit.

I have already completed the routing of the breathalyzer module and most of the main kit. I now need a freelancer to:

Review and correct the breathalyzer PCB (schematic, routing, ATtiny programming, pogo pin/power integration).

Finalize the main kit PCB (check routing, ensure correct integration of all modules, and verify power supply reliability: USB-C + LiFePO4 + TP4056/TP5000).

Suggest improvements for component placement to make integration into a custom enclosure easier.

I work with Proteus and would prefer to continue with it. Current design files (schematic, PCB, BOM, sketches) will be provided.

Looking for an experienced PCB designer/embedded engineer available to finalize this project within a short timeframe.
I am developing an embedded telematics system for vehicles based on a Raspberry Pi Zero 2 W.
The main kit already integrates multiple modules (accelerometer/gyroscope, GPS, humidity/temperature sensor, camera, OBD-II via UART, 4G SIM7600G-H, OLED SSD1309, NFC MFRC522, LiFePO4 battery with solar charging). It is designed for advanced telematics: driving data logging, fatigue detection via camera,... read more
I am developing an embedded telematics system for vehicles based on a Raspberry Pi Zero 2 W.
The main kit already integrates multiple modules (accelerometer/gyroscope, GPS, humidity/temperature sensor, camera, OBD-II via UART, 4G SIM7600G-H, OLED SSD1309, NFC MFRC522, LiFePO4 battery with solar charging). It is designed for advanced telematics: driving data logging, fatigue detection via camera, and cloud connectivity.

A detachable personal breathalyzer module has also been designed (Figaro TGS822 + ADS1115 + ATtiny1614 + LEDs + buzzer + pogo pins). Each driver connects their module, performs the test, and the data is automatically sent to the kit.

I have already completed the routing of the breathalyzer module and most of the main kit. I now need a freelancer to:

Review and correct the breathalyzer PCB (schematic, routing, ATtiny programming, pogo pin/power integration).

Finalize the main kit PCB (check routing, ensure correct integration of all modules, and verify power supply reliability: USB-C + LiFePO4 + TP4056/TP5000).

Suggest improvements for component placement to make integration into a custom enclosure easier.

I work with Proteus and would prefer to continue with it. Current design files (schematic, PCB, BOM, sketches) will be provided.

Looking for an experienced PCB designer/embedded engineer available to finalize this project within a short timeframe. read less
alcool.png png Sep 04, 2025

Things to know

Job location

Remote

Work location

Job skill level

Expert

Skill Level

Job rate

Open budget

Fixed-rate

Job type

Part-time

Job type

Job length

Under 1-month

Job duration

Areas of expertise

Circuit Design Embedded Systems Engineering PCB Layout Design Power Supply Design Prototyping Schematic Capture +3 more

Job categories

Electronic Prototyping and Design Services Electronics Design Service

About the client

Payment ready

France (05:55 am)

Posted

Active

Job activity

14 Applicants

2 interviews in progress

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