[Nut-upsuser] R: NUT and relay on USB

Charles Lepple clepple at gmail.com
Thu Jan 22 04:10:47 UTC 2015

On Jan 21, 2015, at 8:57 AM, Maurizio Iacaruso <maurizio.iacaruso at gmail.com> wrote:

> I see the raspberry documentation in order to understand if it’s possible “replicate” an USB signal to GPIO.
> So, with a TTL-USB cable I send the signal to the NVR.
> I hope this is possible!

Possible, but not recommended. (You would probably need to add a USB host chip - USB is a synchronous protocol, so the GPIO timing would need to be very precise.)

Is there any way you can send a HTTP request to the NVR to tell it to shut down? With the UPS monitored by NUT, you could launch that via an upsmon NOTIFYCMD.


- Charles Lepple

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