Rotary Encoder Primer
There seems to be a lot of confusion among electronics hobbyists about how a rotary encoder (knob) works and how to use it with electronics projects. Today, we’ll be examining a very cheap and easily […]
Compact Anti-Snatch Alarm
In this article you can see an ultra simple circuit of a lightweight, truly portable, and compact anti-snatch alarm. This trembler alarm is battery operated and features a tone generator capable of drawing quick attention […]
USB 12V Cable Review
One issue that has caught quite a few electronics hobbyists out when they build simple projects on a breadboard is the selection of a right power supply source. The most popular MB-102 breadboard comes with […]
Wireless Mini Boombox for Mobile Phone
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 […]
Expansible Door Sensor
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 […]
LED Strobe Light DIY
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 […]
Solid State Relay (SSR) Primer
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 […]
Lifting Electromagnet – DIY
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 […]
MORNSUN® B0505S-1W Review
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 […]
Ultra-Sensitive Knock Sensor
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) […]