hudiy.eu

I have now ongoing project Land Rover Discovery 2. I created custom PCB with arduino nano for power management. Also it can handle heater(webasto) timing during the night. Inside my unit is 12V->5V step down and audio amplifier. Steering wheel buttons are connected and working.

In future I would like to implement widgets for:
- webasto timing interface
- XY inclinometer with I2C gyroscope

Mounting is done without any cutting to the original dashboard and hold firmly just with two hidden M3 HEX screws.
Rear side with light sensor for day/night + backlight control.

Cable nest

PCB and all software released here: https://github.com/sedlons/lr-hudiy-rpi-hat
I recommend european PCB manufacturer: https://aisler.net/

Functions:
- self power control with latch-up
- steering wheel resistance button read
- power control of RPi
- rotary encoder (volume)
- light sensor (control backlight/day/night mode)
- reverse input for camera switch (marked on PCB as ILM)
- heater power on by timing with RTC (NOT IMPLEMENTED IN HUDIY YET)
- webasto RX/TX interface (NOT TESTED YET)
- connector for I2C gyroscope for inclinometer (NOT IMPLEMENTED IN HUDIY YET)

The project looks amazing! Thank you for sharing it on the forum! It’s great to see the API being used in such an advanced way. If you need any help with further implementing your features or have questions regarding the API, we’ll be happy to assist.

For inspiration.... also connected reverse USB camera. I reused old lens cover and put PCB to 3D printed case.

I routed USB extension cable from dash to behind rear light, so anytime camera can be simply replaced. Cable is waterproof isolated with butyl tape.