- a solar panel that outputs maximum 1.2W (7V, 0.17A).
- a 5V 1A USB power supply
- a 3.5-9V, 1-3W water pump.
I'd like to have the water pump running all the time using power from (1) and (2), preferably not drawing unnecessary power from the USB power supply... So let's say, if the solar panel gives out > 1W of power then don't draw from USB. Wondering what kind of circuit I'd need to achieve this.
Background: I have very basic knowledge of electronic circuits and can connect components following the diagram... that's about it.
Thanks so much!