First of all, continuity testing is very important in electronics work. It helps to find broken wires easily and it also helps to check PCB tracks. Sometimes wires look good but inside they are broken, so continuity tester is used. In this project, a simple Continuity Tester Circuit using Op-Amp is designed. It uses IC […]
Meters and Testers
Simple School Project Multimeter Circuit
Touch electricity and learn easy way! This Simple School Project Multimeter Circuit show how current and voltage work in real life. With one battery, one resistor, one ammeter and one voltmeter, we can measure electricity at home. It is fun, simple and good for beginner to see how circuit really flow. Circuit Working: Parts List: […]
Smart Energy Meter Circuit with Arduino UNO
Electric bill increasing day by day. So we need smart way to measure power use. Here is a simple project using Arduino UNO, ACS712 current sensor and 16×2 LCD with I2C. It shows real time current, voltage and power. This project for Smart Energy Meter Circuit with Arduino UNO help to monitor load and save […]
Digital Display AC Line Tester Circuit
This project for Digital Display AC Line Tester Circuit is a small electronic tester used to detect the presence of mains AC voltage without direct contact. It is a wireless mains voltage tester. When the sensing probe comes near a live AC wire then the circuit detects the field and shows the count on a […]
Simple 555 Timer Based Time Sense Tester Circuit
Simple 555 Timer Based Time Sense Tester Circuit is fun and easy to make. It uses IC 555 and make time delay. Press one switch and start timer. Guess time presses second switch and it stop. LED show result and it is good for learning how brain feel time. Circuit uses 9V battery. Circuit Working: […]
Sound Pressure Level Meter Circuit using IC CA3140
Sound Pressure Level Meter Circuit using IC CA3140 is device to check how loud sound is in one place. It shows sound level with visuals. It is useful for audio testing, noise check and sound work. This article shows simple way to make it using condenser mic, op-amp and FSD meter for correct sound measure. […]