For my project, I access the RPI remotely. The RPI continuously powers sensors over its 3.3vdc rail. For testing & troubleshooting, I would like to cut current to those sensors for some time.
After searching, I don't think there is an easy way without additional hardware, a timer or anything like that to turn off the raspberry pi for a certain time, let's say 30minutes.
Another fix for my problem wold be to prevent the RPI from powering up it's peripherals.
I know that the RPI is using an MXL7704-P4 for power management. Does it always output the 3.3V when the source is connected or just after booting?