Julien Vanier created this
I wanted to make a compact internet-connected analyzer for my car’s OBD-II diagnostic port.
The WiFi-capable Particle Photon or better yet the cellular Particle Electron are great options for that.
Luckily the pins for a Photon fits right in between the 2 rows of pins of a straight OBD-II connector so it’s possible to make a very compact OBD-II adapter with a Photon.
Julien has shared the board on OSH Park: