Back a few months I got one Boom Touch Wireless Portable Speaker from a friend abroad. Boom Touch is a compact speaker which amplifies audio signals without cables or Bluetooth. The Boom Touch uses inductive […]
Monitoring entry/exit doors on time is not always an easy task for everyone. Fortunately, with a handful of electronic parts you can build yourself an expansible door sensor that will not only give a timely […]
Nothing mattering to see a circuit turning light emitting diodes (LEDs) on and off. If for certain applications, brightness of the LEDs could be adjusted in a continuous manner, with a simple dimmer circuit you […]
Nowadays solid state relays (SSRs) can be found in almost every online electronics store, and SSRs are certainly the most ‘silent’ relays available. However, I would like to point out at first that SSRs are […]
The quick way to build an electromagnet based project is to buy one lifting electromagnet with enough lifting and holding power to fulfill the design requirements. Such compact and powerful lifting electromagnets in various shapes […]
Recently when I was developing a digital light controller project, I wanted to have the interface isolated from the common ground to avoid spurious noise and other issues. Since I didn’t have a quick solution […]
Here’s the simple circuit of an ultra-sensitive knock sensor for microcontroller-based electronics projects. It’s in fact a piezo knock sensor monitor based on a single transistor, and designed carefully to work with 5V (or 3.3V) […]
Arduino hardly needs an explanation! Arduino is an extremely flexible open source hardware platform that can be used for countless do-it-yourself electronic projects. It’s very easy to get started with Arduino projects, but if you […]
Audio signal injector is a must to have little tool for troubleshooting audio circuits. Connecting the audio signal injector to the circuit under test you should be able to hear its tone in the speaker […]
This article explains how to play with the common geared dc motors widely used to drive small robots and simple actuators. Geared dc motor is in fact an ordinary dc motor but with plastic or […]
