I’ve been playing around with the Arduino for about two months now and it’s been a lot of fun learning how to use it. I’m new to programming and electronics, and I started with the idea of using the Arduino to PID control Peltier cooling plates with a thermistor so that I could precisely control beer fermentation temperature. Eventually I want to add WiFi networking and data monitoring, but I’m not there yet!
As I’ve been working with it and testing Peltier plates and MOSFETs, the project has grown, with LC filters, MOSFET drivers, and such. Now, I think it will consists of 3 Peltiers affixed to water blocks on both sides, with a pump circulating hot exhaust though a PC fan cooling radiator on one side, and cooled liquid pumped through stainless steel coils on the other side.
I am working on the schematic so that I can have this made into a PCB, and I was wondering if the community had any advice on the circuit in case I was missing something. The whole thing is really just pieced together for information I found on the Internet, so any help would be appreciated!
R1, R2, and R3 are the Peltier plates. They are TEC1-12715, rated as 15A each.
The MOSFETs are IRFB3207.
The MOSFET driver is MCP1407.
Values for the capacitors and resistors are stuff I found other people suggesting.