Working with UPS

[dirk]

Hello Mirko, thank you for your feedback and your sophisticated but necessary solution.

[mirko.comparetti]

No problem.
But maybe this might be an hint for the new RevPi4: internal management of the UPS power with a logic similar to ours, so that if there is a rising edge on the Vcc it will switch on the revpi automatically.

Thanks,
Mirko

[FabeFromBOD]

Hi dear support team,

We are currently using a RevPI connect S for internal development.

We can add a UPS in the event of a power outage. I think I have understood the overall operation but when we apply voltage to the digital input of the X2 connector, the state remains at 0 ?

Code: Select all

if [ `piTest -q -g 6,6` == "0" ]; then echo "low"; else "hi"; fi;

result : low

VCC_PS is connected to X4 connector (12v)
VCC_UPS (simulated by an another PS) is connected to the DI on X2 connector (24v)

I do not understand what's happen