We often marvel at the many things a 555 can do. But [Zafer Yildiz] shows us that it can even take the place of a PCB. You’ll see what we mean in the video below. The timer relay circuit is built ...

Key Button: clock, timer, day, h+(setting the hours), m+(setting the minutes), manual override, reset. Advanced pre-setting one week before. Digital electronic time ...

Today we are going to revisit the CD4541 programmable CMOS timer IC. Although this monostable timer chip has been around for a long time, and many other chips have superseded it, the CD4541 IC is ...

Abstract: The goal of this work is to present a useful speed control algorithm applied for embedded motion control system. A programmable timer is employed to generate pulses for controlling a ...

What is the point of reviewing a cheap timer module, especially if it is based on the ubiquitous 555 timer chip? Recently I got an ‘updated’ version of the common 555 timer relay module. This time it ...

Sophisticated scheduling system - you can choose from 48 individual 30 minute-length intervals to turn on the LED output Controllable LED brightness via PWM (Pulse Width Modulation) in 255 steps ...

The circuit described here is a versatile timer/controller, capable of switching 4 separate outputs on or off at 4 pre-programmed times every day. The circuit is ideally suited for the control of ...

For prototype electronics projects, most of us have a pile of resistors of various values stored somewhere on our tool bench. There are different methods of organizing them for easy access and ...

A digital switch is useful when you need to automate electrical appliances like your AC, geyser, water pump, irrigation pump, sauna, charging for solar inverter, and the like. It helps you handle ...

Motion sensor circuits are there on the Internet for quite a while now. These circuits are mainly used to drive AC load (like lights, fans) in home automation or IoT projects. It is also very common ...