Poor man’s Bluetooth Microphone
A family party or a small get together, we all need some stunning music there to lighten up the festive mood. Well, today I’m going to talk about a simple do-it-yourself project that will give […]
An Isolated Power MOSFET Switch
I volunteered to design a simple and inexpensive isolated power mosfet switch to control some electric loads by a ‘pulsed’ low-voltage input signal. There are of course superb solid state relays (SSRs) that we could […]
The Mysterious Laser Receiver Sensor Module!
This article introduces a laser receiver sensor module available on the web. The module, named “Laser Receiver Module Non-modulator Tube Laser Sensor Module”, comes as a cheap module usually without a user guide. So it […]
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 […]