Before you start, make sure you have already flashed the firmware on the ESP32 board. If you haven't done that yet, please follow the instructions in the README.
- M5Stack Atoms3 Lite ESP32S3
- M5Stack Mini CAN Unit (TJA1051T/3)
- 4-pin grove cable to connect Mini CAN with AtomS3 (included with the Mini CAN unit)
- 4x male-male Dupont jumper cables (example uses the 24AWG 4-CORE Shielded Cable)
- USB-C cable to connect the board to your computer
- Connect the Dupont jumper cables to the Zehnder ventilation unit (see diagram below).
- Connect the other side of the Dupont jumper cables with Mini CAN unit (see diagram below). Make sure you connect the cables correctly.
- Connect the Mini CAN unit with the M5Stack Atoms3 Lite board using the 4-pin grove cable.
Here is a picture of the finished setup:
|-----------------+ +-------------+
| | +----------------------+ | |
| [ComfoAir] | | [MiniCan] | | [ESP32S3] |
| | | [TJA1051T/3] | Grove | |
| (red) 12V o-----o HV RXD o=======o GPIO1 |
| (black) GND o-----o GND TXD o=======o GPIO2 |
| (yellow) CAN_L o-----o CAN_L 5V o=======o 5V |
| (white) CAN_H o-----o CAN_H GND o=======o GND |
| | | | | |
|-----------------+ +----------------------+ +-------------+