I'm working on an RPi-Pico (Adafruit Feather RP2040) project that runs off of computer USB power (5V/500mA-1A).
I need to simultaneously move 3 motors that run at 6V-8V/250mA, but only for approximately 1 second.
So far I've put together a Falstad circuit that almost does what I want it to do. I haven't added any boost converters to go up to the 6V-8V/250mA, but (as far as I know) the watts are high enough when the switch is open.
The problem I'm having is the microcontroller I'm using can only output 5V/500mA max, and I can't get the circuit tuned where the Pico is only outputting 500mA. Currently it steady-states at about 2.7A.
Ultimately what I'm trying to do:
- 5V/500mA through the RPi
- 6V-8V/250mA for 1 second through the motor load
- 5V/250mA through the RPi