# TeslaBMS

**Repository Path**: icar/TeslaBMS

## Basic Information

- **Project Name**: TeslaBMS
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2025-06-14
- **Last Updated**: 2025-06-14

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

Arduino compatible project to interface with the BMS slave 
board on Tesla Model S modules.

The modules are daisy-chained together with a TTL interface.
The interface uses a Molex 15-97-5101 connector and runs at
612500 baud. This can be a difficult baud rate to match with
arduino compatible processors. The Arduino Due and Teensy
3.5/3.6 boards are confirmed to be able to generate a suitably
close baud rate. The factory wiring to each module is comprised
of two sets of 5 differently colored wires:

* Red = 5V input to the module
* Green = Gnd for power and signal
* Gray = Fault output
* Yellow = UART Wire
* Blue = UART Wire

The fault output is active low. Use your own pull up to the fault line and if the line is pulled low then a fault has occurred.

Here is a PDF that explains how the wiring between modules and the master board is supposed to be:
https://cdn.hackaday.io/files/10098432032832/wiring.pdf