OBDII UART Adapter
OBD-II to UART adapter connecting Arduino to a vehicle's diagnostic port. Supports CAN bus and KWP2000 protocols; provides OBD data and board power supply.
Pinout
- OBD 16Type · Power
- OBD 4Type · Ground
- OBD 5Type · Ground
- OBD 6 (CAN-H)Type · Signal
- OBD 14 (CAN-L)Type · Signal
- OBD 7 (K)Type · Signal
- TXDType · UART
- RXDType · UART
- GNDType · Ground
| Pin | Type |
|---|---|
| OBD 16 | Power |
| OBD 4 | Ground |
| OBD 5 | Ground |
| OBD 6 (CAN-H) | Signal |
| OBD 14 (CAN-L) | Signal |
| OBD 7 (K) | Signal |
| TXD | UART |
| RXD | UART |
| GND | Ground |
Pin details
9 connections- OBD 16Power
- OBD 4Ground
- OBD 5Ground
- OBD 6 (CAN-H)Signal
- OBD 14 (CAN-L)Signal
- OBD 7 (K)Signal
- TXDUART
- RXDUART
- GNDGround
Start wiring
Ethernet · UART · SPI · Shield
Confirm the data interface matches your host board.
Module pins: OBD 16, OBD 4, OBD 5, GND, OBD 6 (CAN-H), OBD 14 (CAN-L), OBD 7 (K), TXD. Schematik maps them to your board in the app.
Wired comms
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