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Make this Advanced Digital Ammeter using Arduino

Last Updated on June 8, 2026 by Swagatam 11 Comments

Ammeter analog

In this post I will show how to construct a digital ammeter using 16 x 2 LCD display and Arduino. We will understand the methodology of measuring current using a shunt resistor and implement a design based on Arduino. The proposed digital ammeter can measure current ranging from 0 to 2 Ampere (absolute maximum) with […]

Filed Under: Arduino Projects, Meters and Testers Tagged With: Advanced, Ammeter, Arduino, Digital

Digital Thermometer Circuit – Uses a Solar Cell for Power

Last Updated on June 8, 2026 by Swagatam Leave a Comment

light thermometer 1

The articles explains a digital thermometer circuit project that works without a battery. Instead of a battery the circuit utilizes a small solar cell and operates by deriving power from the ambient light available from the surrounding light sources. This allows the circuit to be extremely compact, light weight, versatile and hassle free while measuring […]

Filed Under: Health related Projects, Meters and Testers Tagged With: Cell, Digital, Power, Solar, Thermometer, Uses

Simple IC Tester Circuit [Test Digital and Analogue ICs]

Last Updated on June 8, 2026 by Swagatam 3 Comments

Cable with banana pins and micro alligator clips

The IC Tester is simple to use. You don’t have any  switches to configure or lengthy test processes to complete. The universal IC Tester is a static tester, which means this does not dynamically test the IC’s operation. All ICs with up to 20 pins can be tested by this unit. ICs  with more than […]

Filed Under: Meters and Testers Tagged With: Analogue, Digital, Simple, Test, Tester

How to Connect Digital Ammeter, Voltmeter Modules M4430, M3430

Last Updated on June 8, 2026 by Swagatam 17 Comments

In this post I will be talking about the Chinese M4430 digital ammeter, voltmeter module which is a really neat, compact digital meter that you can mount on a panel. Whats great about it is that it is designed to measure and show us both the DC voltage and the current at the same time. […]

Filed Under: Meters and Testers Tagged With: Ammeter, Connect, Digital, M4430, Modules, Voltmeter

How to Check a MOSFET Using a Digital Multimeter

Last Updated on June 8, 2026 by Swagatam 90 Comments

228964

In this post I have explained how to test mosfets using multimeter through a set of steps, which will show help you to accurately learn the good or faulty condition of a mosfet Mosfets are Efficient but Complex Devices MOSFETs are outstanding devices when it comes to amplifying or switching of various kinds of loads. […]

Filed Under: Meters and Testers Tagged With: Check, Digital, MOSFET, Multimeter

Make this Digital Temperature, Humidity Meter Circuit using Arduino

Last Updated on June 8, 2026 by Swagatam 2 Comments

LCD bb

In our previous article, I have explained how to interface temperature humidity sensor with arduino and read out displayed on serial monitor of arduino IDE. In this post I have explained how to display the reading on a 16×2 LCD display for the proposed digital temperature/humidity meter using Arduino. Introduction This project may be used […]

Filed Under: Meters and Testers Tagged With: Arduino, Digital, Humidity, Meter, Temperature

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