Analog Audio Visualizer LEDs
I prepared this post in a hurry to help you to quickly design and build an analog audio visualizer using common light-emitting diodes. It’s not the first time I built a simple analog audio visualizer […]
Hearing Aid DIY Kit
I was following some sellers on the internet, searching a lot more, to get a few difficult-to-get components for some other electronics projects I was planning, and then stumbled haply on a do it yourself […]
Optical Smoke Alarm
Optical smoke alarms, also known as photo-electric smoke alarms, are particularly useful in bedrooms, lounges, hallways, and in other areas where we can otherwise expect false alarms from the common ionization smoke alarms. An optical […]
How to Play with a Water Pressure Sensor?
Water Pressure Sensor is not a familiar everyday sensor for most electronics hobbyists and makers, so here’s an introductory tutorial on a popular water pressure sensor – the DFRobot Gravity: Analog Water Pressure Sensor. In […]
BJT Switch & Microcontroller
Recently I got an unusual query from a newbie microcontroller hobbyist on how to drive an electromagnetic relay using a bipolar junction transistor (BJT). Admit it, analog electronics is not a piece of butter cake […]
Stand-alone PWM Power Driver
Do you remember the feeling of building your own power electronics projects with a nifty analog chip? Something like DC-AC power inverter based on the SG3525? The SG3525A is a pulse width modulator integrated circuit […]