Sorry, I only now see your post.

Great, I will incorporate it in the Wiki / Repository soon.

Thanks!

This system works with 2 pcb, the lower and the upper pcb, join by a 7PIN pin head.

The 7 PIN 2.54mm junction:
PIN 1 SQUARE : +3.3V
PIN 2 CIRCULAR : To PIN OBD 12 – CAN 1 LOW
PIN 3 ROUND : To PIN OBD 13 – CAN 1 HIGH
PIN 4 ROUND : To PIN OBD 16 – +12V
PIN 5 ROUND : To pin OBD 14 – CAN 0 LOW
PIN 6 ROUND : To pin OBD 6 – CAN 0 HIGH
PIN 7 ROUND : To pin OBD 4 + 5 – GND

CAN 0 = CAN ISO15765-4
CAN 1 = Renault proprietary CAN network

The lower pcb :
Design to fit on the OBD connector and provide the 3.3V from the 12v pin.
you can found 4 variations :
– Without power supply
– With the “tiny dc-dc converter” prefabricated module on aliexpress
– Based on the mp2451 by monolitic power
– Based on the mp2315 by monolitic power
Designs based on mp wasn’t tested in the real life.

the upper pcb :
– ESP32 + 5 LEDS + CAN 0 + Reset Button
– ESP32 + 5 LEDS + CAN 1 without Reset Button
JP CAN0 and JP CAN1 are two jumper to enable/disable the 120OHM end resistance.

How to program it :

Edit the cs_config.mode_leds value in the config.cpp to enable the multi led fonction :
0 = No led
1 = LED_SINGLE
2 = LED_MULTI

[code]
curl -fsSL https://raw.githubusercontent.com/platformio/platformio-core-installer/master/get-platformio.py -o get-platformio.py
python3 get-platformio.py
export PATH=$PATH:\~/.platformio/penv/bin
git clone https://gitlab.com/jeroenmeijer/cansee.git
cd cansee
nano src/config.cpp
platformio run –target upload
[/code]

if you have any space problem, juste add “board_build.partitions = min_spiffs.csv” at the end of the platformio.ini.

some pictures ( reset button + 1 can ) :
https://imgur.com/a/GbGYeLT

Geber, BOM, drill, pic and place files :
https://mega.nz/file/wVxhWYTK#y6q9kYHQlhPdfRSx26dbdCVEdQKtsT8QLM0O1bMZ1Xw

sorry for my terrible English 🙂

That is a VERY neat design!

If you have a gitlab account I can give you access to to the project, but you can also drop the files to ie Google drive and send me a link.

Hi,

I’ve design it to fit in a tiny OBD case ( Like the cheap ELM ).

Like this => https://ae01.alicdn.com/kf/HTB1QXpPaEjrK1RkHFNRq6ySvpXa1.jpg

I would like to make a scalable model, with a programmable interface to update the dongle ( why not OTA update ).

It’s a lot of information to host (choice of components, design note, diagram, etc, …) Do you know where I could host this? Can i write in the wiki ?

I just launched 10PCS for testing, I can provide some unit to the development equipment for free

The bottom layout pcb => https://i.imgur.com/wRvSw6n.png
The top layout pcb => https://i.imgur.com/dM4iSqH.png

JP CAN0 and JP CAN1 is two jumper to enable/disable the 120OHM end resistance.

I’m still doing some tests and within a month, I will have finished the first version (Chinese New Year …)
to be sure that works …

Best regards,
EliotFR

We’re happy to incorporate them in the CanSee repository or Wiki. Just drop me a link where I can pick it/them up please.