OBD2

8 boards

KiCad boards from 7 GitHub repositories tagged “obd2”, the most starred first; open any of them in PCBKit.

2 layers50.8 × 28.6 mm
Beaglebone obd
KoffeinFlummi/rustbucket
Access your car's diagnostics with a BeagleBone Blue and Rust.
20 parts60GPL-3.0
6 layers50 × 23 mm
Esp32p4amoled3.19
v-cu/dpf-load-monitor-wide
ESP32-P4 diagnostic display for VAG diesels — live DPF and engine data over CAN (UDS) on a 3.19" ultra-wide AMOLED. Firmware, KiCad files, BOM and 3D enclosure.
115 parts12
2 layers41.5 × 36 mm
Iso9141-interface
brucemack/iso9141-interface
KiCad project for an IS0-9141 interface between a car and a micro-controller (ODB2)
24 parts11GPL-3.0
2 layers40 × 60 mm
Scaner v1
Aleksei327/ESP32-C5-OBD2-Scanner
DIY dual-CAN OBD2 adapter on Seeed XIAO ESP32-C5 with a Flutter Android app. Working prototype, tested on a Citroën C3 II: full read-only ECU scan, PSA fault codes, live data. Single-sided home-etched KiCad board.
34 parts2
2 layers99 × 68 mm
Shift Indicator PCB
Rav4s/diy-shift-indicator
A K-Line shift indicator for manual transmission cars like my Mazda MX-5
31 parts1GPL-3.0
2 layers47 × 41 mm
Obd2laa
patrykbajos/obd2laa
OBD2 to Logic Analyzer interface
13 partsGPL-3.0
4 layers100 × 60 mm
Cyd obd adapter
ssjrocks/cyd-obd-adapter
Open low-level OBD-II adapter: ESP32 with HS-CAN, single-wire CAN, flex CAN, 2x K-line, L-line and pin voltage probes, exposed over BT Classic, BLE, WiFi and USB as a raw proxy. KiCad 10, JLCPCB-ready.
170 partsAGPL-3.0
2 layers36.3 × 32.4 mm
Iso9141-interface
brucemack/iso9141-interface
KiCad project for an IS0-9141 interface between a car and a micro-controller (ODB2)
19 parts11GPL-3.0