[Ovmsdev] OVMS - HW

[Mastro Gippo]

It may be a problem to get the 5V from the output of the regulator, but the
nice thing about that module is that it is isolated; you can connect your
own power supply and be 100% safe. These relays draw about 80mA each (just
tested them, I have the same product at home), so if you turn them on one
at a time and for short periods of time it should be ok (I don't know a lot
about the termal design of the OVMS).
MG


2014-06-16 22:37 GMT+02:00 Olav A. Antonsen <olav at ansit.no>:

> Hello
>
>
>
> My knowledge of electronics is limited.
>
>
>
> As far as I understand the OVMS module is supplied with +12V via the OBD
> connector. What I don't understand is where the +5V comes from?
>
>
>
>
> https://github.com/openvehicles/Open-Vehicle-Monitoring-System/blob/master/vehicle/Car%20Module/v2-base/20120814-boarddesign.pdf
>
>
>
> I'm currently trying to control a relay using the RC3 output on the
> PIC18F2580 as a control signal to a rely on a relay module
>
>
>
>
> http://www.dx.com/p/arduino-2-channel-relay-shield-module-red-144140#.U59Qavl_t8E
> .
>
>
>
> The relay module needs to be supplied with +5V to drive the relays, and my
> plan was to get the +5V from the OVMS module using pin 13 on the HEADER 9X2.
>
>
>
> But I'm afraid I might blow something on the OVMS module if the relay
> module draws to many mA.
>
>
>
> Any advice would be appreciated.
>
>
>
> --Olav
>
>
>
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>
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