In this post we learn how to make a simple homemade walkie talkie circuit using ordinary FM transmitters and FM radios. It’s a perfectly tested design by me. I could […]
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BJT Emitter-Follower – Working, Application Circuits
In this post we learn how to use a transistor emitter follower configuration in practical electronic circuits, we study this through a few different example application circuits. An emitter follower […]
How to Interface Servo motors with Arduino
In this post we are going to learn what servo motor is, how it functions, how to interface with microcontroller and what make this motor special from other motors. Being […]
Two Pipe Water Pump Valve Controller Circuit
The article explains how to control a two pipe submersible pump valve to ensure that the pipe bringing in the municipal water is always given the main preference to the […]
Illuminated Crosswalk Safety Light Circuit
The article explains a simple illuminated crosswalk safety light circuit for ensuring a safe walking passage for the user amidst heavy traffic. The idea was requested by Mr. John. Circuit […]
How to Make LED Air Pollution Meter Circuit with Arduino
In this project we are going to construct an air pollution meter using MQ-135 sensor and arduino. The pollution level in the air is indicated by series of 12 LED. […]