¶ BringAuto Pi Watchdog
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, …
¶ Features
- 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
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.
¶ Supported Compute Modules
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
¶ Images
