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Meters and Testers

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Simple School Project Multimeter Circuit

Last updated on 16 October 2025 by Admin-Lavi Leave a Comment

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: […]

Filed Under: Meters and Testers, Tutorials

Smart Energy Meter Circuit with Arduino UNO

Last updated on 28 September 2025 by Admin-Lavi Leave a Comment

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 […]

Filed Under: Arduino Projects, Meters and Testers, Power Supply Circuits, Sensors and Detectors

Digital Display AC Line Tester Circuit

Last updated on 25 August 2025 by Admin-Lavi Leave a Comment

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 […]

Filed Under: Meters and Testers

Simple 555 Timer Based Time Sense Tester Circuit

Last updated on 13 August 2025 by Admin-Lavi Leave a Comment

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: […]

Filed Under: Meters and Testers, Timer Circuits

Sound Pressure Level Meter Circuit using IC CA3140

Last updated on 4 August 2025 by Admin-Lavi Leave a Comment

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. […]

Filed Under: Meters and Testers

Simple Christmas Series Lights Tester Circuit

Last updated on 4 August 2025 by Admin-Lavi Leave a Comment

Christmas come one time in a year and it brings big joy. Simple Christmas Series Lights Tester Circuit is simple design. It checks and fixes problem in series Christmas lights. These lights are used for holiday decorate. If one bulb stops then all lights go OFF. One bad bulb break the whole circuit and makes […]

Filed Under: Meters and Testers

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