Problem with momentary button
I've hooked up a momentary button but the device is not performing as expected.
When I first apply power, the RPi does not power up. I must press the button to switch on. Later pressing it again shuts it down.
But after a power cut, the device stays off.
I can't live with this - if I'm away then the RPi's must boot up after a power cycle.
I tried using the NC contacts and that works on boot but then - I think - the onboard is deciding its a toggle switch and so pressing it shuts it down and immediately reboots it.
Can you help?
I have bought 5 of these boards and 5 switches so I really need a fix
@blacknell Hi! I have just replied to your email.
Generally, the default PowerBlock firmware does not return to the previous power state upon power loss. However, I did work on this feature some months ago and I built an updated firmware version for the PowerBlock that contains this feature: Upon switch on, the PowerBlock persists the ON state as target state. When in ON state and a power button switch off event is observed the OFF state is persisted as target state. When a power-reset event occurs the PowerBlock returns to the previously persisted target state.
If you have a programmer for the ATTiny85 microcontroller on the PowerBlock you could just download this other firmware.
I am happy to provide this firmware upon request. New batches of the PowerBlock might get this firmware per default, eventually.