Car Pi Hat

From Communauté de la Fabrique des Mobilités

The Raspberry Pi Automotive Interface HAT

💼 porté par


The CarPiHat has been designed to make interfacing your Raspberry Pi to your car, boat, truck, or any 12V based system much easier. Originally designed to help with my OpenAuto pro installation, demand grew for the board and I have decided to run a few batches of them. For anyone interested in purchasing a HAT, please do so via the Tindie link below:

Currently, the HAT is not open source, although at some point in the future I may explore this option further.

PLEASE NOTE: Whilst I will do my best to support users of the CarPiHAT, I am not a software developer, and I am not able to provide custom software for your application.


  • 12V - 5V buck converter to power the pi optional touchscreen, with fuse and filtering.
  • Safe shutdown circuitry to allow the pi to control its own power, and to remove any parasitic drain when off.
  • Dedicated reverse, illumination and aux inputs, all opto isolated.
  • 2 opto isolated general purpose inputs. (for a total of 5 inputs)
  • 2 high current, high side switched 12V outputs (@1A). (for switching relays, LED's ect)
  • 1 independent CAN bus interface.
  • Real time clock to maintain system time across reboots.
  • Broken out I2C bus.
  • Broken out 1W for temperature sensor ect.
  • Long pins to allow HAT stacking.

Organizations using or interested in using the resource:


Tags: CAN, OBD

Categories: Logiciel, Matériel

Theme: Open HardWare, Voiture Connectée


Challenge: Améliorer la résilience des systèmes de transports et des solutions de mobilités, Augmenter les connaissances partagées en cartographie et usages des véhicules et réseaux de transports

Key people to solicit:

Other related common: CANanalyze, CANtact, Busmaster CAN, Emulateur OBD, OBD Pi

Wealth sought:

Required skills:

Community of interest:


Terms of Service (TOS):

Level of development:

Link to my actions board:

Link to my cloud, wiki, drive…:


Next step:

Documentation of the experimentations:

Other informations

List of the actors using or willing of using this common: aucun pour le moment

List of the workshop reports related to this common: