We can make a simple touch switch using only two inverter gates, two resistors, and two capacitors. The schematic diagram of the circuit is shown in the figure below. At power up, the output (of U1A) ...

Working on an embedded project? An 8-bit microcontroller with a pulsewidthmodulation (PWM) peripheral can provide a low-cost and easy solution to adding natural voice to your next embedded endeavor.

A few months ago, I installed a homemade electric pet shower in my neighbor’s kennel. My first thought was to use a simple toggle switch to control the AC230V solenoid valve of the system (see below) ...