Have anyone seen or tried to make this?
As I noticed there where pins left over. (26 GPIO cable to 40 connector) I got the Idea to make an on/off switch for battery operated robots that is so small that it could attach to the robot.
This would give the option to have a push button that gracefully shuts down the Pi with a Python scrip and then cuts of the batteries without pulling the plug… …and turn it on with the same button.
It would be convenient as you don’t have to use SSH and then pull the cable
There are quite a lot of 5v on/off buttons on the market but I haven’t found a 9v version with battery connector.
I can’t see any problems doing that as there are small relays that can handle the current.
Here are the operate requirements:
9 -12V connectors or solder points
Cables to pins
Led to check that it’s down
Iv’e got some pictures to illustrate: