Yes, if you just want to plug things together. No if you are good in soldering and solder some wires to either the back side of the RPi or to the connector of this display board.I will need a GPIO expander to breakout those pins for use?
Each ground pin is a good ground pin. It does not matter if the display is using this GND pin too. Btw you could connect a button between Vcc 3.3V and GPIO too, just use a pulldown on the GPIO instead of a pullup.For this test project I mostly just want a simple On/Off button which I believe only uses 1 standard GPIO pin + a ground pin: with the ground pin being unavailble I assume this is another deadend...darn.
It is simple to shut down a RPI using a GPIO and a button, just invoke 'system halt' when button is pressed or use dtoverlay=gpio-shutdown which can be configured to use any GPIO. But won't turn off power. Not so easy to turn the RPi on again. Buttons won't work if Pi is not running and according to some search in the net the dtoverlay=gpio-shutdown can be used to restart the RPI again only if applied on GPIO3 (which is not available in your use case).I mostly just want a simple On/Off button
Statistics: Posted by ghp — Sun Apr 14, 2024 7:58 am
