Apologies as I’m fairly new to electronics work.
I’m trying to figure out a good way to have a project turn a servo in the case of a power failure and run through a really quick 3 signal shutdown sequence. I’m currently thinking this would require battery backup and a charging circuit, but I’m curious if anyone has worked with maybe a capacitor circuit that would be simpler to just send a write and power a servo to a specific position if the main board power were to fail.
Thanks for any thoughts.
I’ve found this: http://ruggedcircuits.com/html/circuit__13.html
using a “Super Capacitor” which seems like a simpler method than battery backup. I’m not sure if 35 ma for 3 seconds would be enough to power a servo.