Build a simple DIY optocoupler tester circuit with two LEDs and a 3.7V battery. Test 4-pin and 6-pin optocouplers instantly, no instruments needed. Full diagram included.
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Arduino Water Level Sensor Tutorial - How Water Level Sensor Works
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In this tutorial, we are going to interface a water level sensor with an Arduino to measure the water level and in the process, we will let you know the details about this sensor and its working.
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Clocked SR Flip Flop: Complete Guide with Circuit and Truth Table
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Learn how to build a clocked SR flip-flop using NAND gates. Understand its working principle, truth table, and circuit diagram for designing stable digital memory and control logic circuits.
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Arduino GPS Tracker using SIM800L and NEO-6M
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Learn how to build an Arduino-based GPS tracker using the SIM800L GSM module and NEO-6M GPS module.
A complete guide with circuit diagrams, code, and working explanation to set up your GPS tracker.
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TRIAC Dimmer Circuit
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In this project we use Triac (Triode AC Switch) to control the brightness of the AC bulb with a IR TV Remote. You can also control Fan speed with your TV remote using this Triac Dimmer circuit.
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12v Battery Charger Circuit
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In this simple circuit we will see how can we recharge a lead acid Battery used in most of the electronic projects. This project will save yourself from investing in a battery charger and help you to extend your battery life.
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IR to RF Converter Circuit
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But IR remote has some limitations like low range and it only works in Line of Sight etc. So these limitations can be overcome by converting the IR signal into RF signal. RF signal does not required line of sight and have much better and long range then IR remote.
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IR Detector Circuit
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IR sensor is very popular sensor, which is frequently used in many applications in electronics, like it is used in Remote control system, motion detector, Product counter, Line follower Robots, Alarms etc. We have already covered complete working of IR sensor here in this article: IR Sensor Module Circuit. IR Sensor basically consists a IR LED and a Photodiode.
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Emergency Light Circuit
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Emergency light is an integral part of household electronics nowadays. We all know Emergency light is used during the power failure to light up the home. As it is used during the power failure, it should last long, hence generally bright white LEDs are used in emergency light, because they produce more light and consume less power.
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XNOR Gate Circuit Diagram
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XNOR or EX-NOR gate is a digital logic gate, designed for arithmetic and logical operations. Here we are going to use 74LS86 chip for demonstration, this chip has 4 EX-OR gates in it.
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