Hi all, Fairly new to electronics, been gradually teaching myself. I'm working on a project that I want to power from one power source.
The Peltier says it needs a 12v 6A power supply and I'll be needing this as I'll be adding a large heatsink. The air pump needs 6v with a current of 0.45A The screen needs 5v with a current of 0.45A.
So, my thinking was that I could get a 12v 8A power supply and split it using a barrel jack squid so that the peltier is powered and constantly on and the Wemos D1 will also have power. I can then use the 5v rail with a transistor and diode to power the air pump and connect the screen to the 5v rail also. When the pump and the screen is on that will be close to 1A which the max rated for the Wemos.
I'm worried that the voltage will be too high for the Wemos regulator, especially at 1A. Does anyone know if this will work or have any suggestions on how to power the project from 1 power supply?