How to power up arduino

Projects General Guidance
1

Hi,
I've decided to make my own ODBII data loger for my car based on Freematics OBD-II Adapter for Arduino | ArduinoDev.com. But I'm stuck with question can I power up arduino directly from ODBII? Or should I make seperate wire connection with 12V current (for example from car lighter).

I usle ODB2 interface with ELM327, on output I've already have Tx,Rx signals.

Br,
Marcin

2

You can take power from pin 16 of the ODBII connector, that's what it's there for.

3

Great. Thank you.