Tesla Model 3 Drive Unit PCB
Open Source logic board for the Tesla Model 3 rear drive unit. Based on the inverter designed by Johannes Heubner using FOC control.
the model 3 drive unit inverters feature a PCB with both HV and LV circuits, the gate drivers, and logic. thus a simple replacement brain board is not possible. canbus control is complicated and requires use of tesla's diagnostics software for inverter pairing. this is a legal greyzone and not a fully opensource option. Instead a full fledged replacement board with gate drivers was designed to allow full lobotomization of elon, thus gaining full opensource control of the model 3/y drive units!
https://github.com/damienmaguire/Tesla-Model-3-Drive-Unit
https://github.com/davefiddes/stm32-sine
https://www.evbmw.com/index.php/evbmw-webshop/tesla-boards/tesla-model-3-du-beta
parts needed to be fitted:
-current sensors: MLX91209LVA-CAA-002-SP (can be sourced from original board)
-gate drivers: STGAP1BSTR (can be sourced from original board)
-temp sensors: EPCOS : B57164K0473J000 (can be sourced from original board or https://www.mouser.ie/ProductDetail/EPCOS-TDK/B57164K0473J000?qs=E%2F3ZYvLbbh81QlAiU7nO2g%3D%3D)
-power transformer: VGT22EPC-200S6A12 (can be sourced from original board)
-(for wiring harness) 30 pin mating connector: Sumitomo Original 6189-6987 61896987 https://www.aliexpress.com/item/1005005920568514.html
-30 pin connector and pins are a private stocked part, so must be salvaged from the original board
-11x torx T20 screws holding the board onto the case
-3x T10 securing the current sensor trim to the pcb
OR
- 2x T10 screws holding the pryofuse and current sensor trim
Installation Process
See the Tesla Model 3 Drive Unit PCB Install page for a detailed guide on how to install and commission the PCB.
Firmware Parameters
The [stm32-sine M3_DU] firmware has a number of additional parameters and spot values over the standard firmware. The Tesla Model 3 Drive Unit PCB Parameters page describes these.