[Ovmsdev] Add +12V ignition detection in OVMS HW v3.3? (was: VW e-Up: CANopen & CAN-ID scan results)

Michael Balzer dexter at expeedo.de
Sun Aug 2 17:47:08 HKT 2020


I remember the current Leaf also has the issue of the OBD port being
filtered by a gateway to only support polling.

I think we should generally add a +12V ignition signal detection to the
next OVMS hardware revision, i.e. without the need to add extra hardware.

There is no standard for the ignition / switched +12V being available at
the OBD port, but I think most cars will have that. If a car doesn't, it
should still be easy to get from around the OBD port (e.g. fuses).


Am 02.08.20 um 11:03 schrieb Soko:
> Meaning: We need a special VW-cable (like for the NIssan or Kia Soul)
> with OBD Pin1 gets into a pin on the DB9 connector and into a
> Digital-In-Pin on the OVMS. A voltage divider is needed as well as
> +12V on OBD-Pin1 signals "ignition on".

Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26

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