Microprocessor boards like Arduino, Raspberry Pi, Beaglebone can do a lot of nifty things with electronic signals. It is sometimes necessary to move some of those tasks outside of the processor itself. Enter the world of custom circuits. There are a lot of components out there that have specialized functions, there are even more that can be used a variety of ways.
In this video, I will show you a few of my most used helpful circuits. They involve using the 555 timer and the Operational Amplifier.
See the full series here.