CUSTOM_PCB.md

Custom PCB v2

This option uses a custom pcb to connect the ATOM Lite to the can bus.

Schematic is identical to the already tested design from vekexasia

All required documents to order boards or customize the current design are available in the pcb folder

• Schematics PDF
• Schematics JSON that can be imported in EasyEDA

Files required to order custom boards from JLCPCB

• Gerber files
• Bill of Material
• Pick and Place

Connection Diagram

Using ComfoNet RJ45 connector

|----------------+ 
|                | 
|   [ComfoAir]   | 
|                |                                           custom pcb
|                |      +++++++++++++++++++++            +-----------------+
|           RJ45 o------| (w/orange)  CAN-L o------------o CAN-L           |
|----------------+      | (  orange)  CAN-H o------------o CAN-H           |
                        |  (w/green)    GND o------------o GND             |
                        |     (blue)   +12V o------------o +12V            |
                        +++++++++++++++++++++            +-----------------+

Using ComfoNet plug-in connections

|------------------+                custom pcb
|    [ComfoAir]    |            +-----------------+
|   (white)  CAN-L o------------o CAN-L           |
|  (yellow)  CAN-H o------------o CAN-H           |
|   (black)    GND o------------o GND             |
|     (red)   +12V o------------o +12V            |
|------------------+            +-----------------+

Installed

I currently have two boards connected, one that uses the code from this repo and the other to do can sniffing enabling verbose logging

Notes

As you can see the board size could be slightly reduced and I now think it would be more useful to use a Spring Clamp Terminal Block like this one.

New board design in the pipeline, just for the fun of making these...