BringAuto Pi Watchdog board is designed to provide safe housing for a Raspberry Pi like compute modules for use in automotive environment.
It’s tested and validated by BringAuto autonomous robots. It’s used as backing for BringAuto Drive-By-Wire, Cloud Gateway, Gateway for sensor data gather, …
- required power supply: 12 - 30V DC, 30W max
- operation temperature: -20°C - 50°C
- operation humidity: 0 - 90% non condensationg
- protections installed:
- reverse polarity protection
- under voltage protection - device will switch off when input voltage is under 12V
- overvoltage protection (max. 72V constant voltage) - device will switch off when input voltage is over 30V
- programmable watchdog functionality based on Pi Pico,
- adjustable/programmable PWM for cooling fans (driven by Pi Pico)
- 5V internal power supply based on automotive TPS5450DDAR used to power up any compute module with 5V input voltage
- RS232 up to 250 kbps based on automotive MAX3232EEUE+
- validated in a real environment in production plants, chemical plants, automation, BringAuto autonomous robots, …
Firmware is released under GPL license and stored at BringAuto Github repository.
To install new version of the firmware read the README at the github repository above.
Any compute module with 5V input power supply is supported.
requirements to Compute Module sorted by a BringAuto Pi Watchdog feature
- RS232 - an UART interface must be available
- Programmable Watchdog - 2 IO pins must be available
- For fully functional USB - an USB port must be available
- For fully functional Ethernet - an ethernet port must be available
By default the Header adapter for Raspberry Pi 4 GPIO compatible boards is shipped.
The complete pinout