Electronics

So my Raspberry Pi has a fan that runs constantly and it annoys me, time to fix that. I am going to show you how to make a fan that only turns on when the raspberry pi is on and the CPU is above a certain temperature threshold. We’ll be using rpi-fan-controller for this task.

A diode bridge is a simple arrangement of diodes that can be used to convert an AC signal into a DC signal.

This is a rather simple project, that uses an arduino to flash and pulse lights, the pattern of flashes and pulses can be used to signal Morse code messages.

This is an adaption of a similar chart that I saw a while ago, I find it far quicker to use than a normal resistor colour table.