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Playing a Melody Using Arduino

Last Updated on May 15, 2026 by Swagatam 2 Comments

speaker schem

In this Arduino tutorial we will learn how to execute the tone() command for producing musical notes. The configuration will play a tiny musical tone that could be familiar to you.     Required Hardware for the Project Arduino BoardLoud speaker – 8 Ohm 1 inchResistor – 100 ohmsHook-up wires Procedure: It’s rather too straightforward […]

Filed Under: Arduino Projects, Audio and Amplifier Projects Tagged With: Arduino, function, Melody, Playing, Tone

Categories

I have compiled a complete list of categories on this website to help you quickly find and navigate the electronic circuits you’re looking for. Let’s get started. Arduino Projects for Engineers In this category I have introduced comprehensive Arduino circuit designs for EEE and BE students. These include detailed explanations, images, and online support, which […]

LED Chaser Circuit using IC 74LS164: LEDs illuminate in Bar Mode then Shut off together or one by one

Last Updated on June 8, 2026 by Swagatam 2 Comments

knightriderscannercircuit

This circuit is actually a little more advanced LED chaser scanner circuit using two 74LS164 Shift Register ICs together with one NE555 Timer, and yep the light effect looks somewhat similar to those old Knight Rider or Mustang scanner lights which move from sides toward center. The LEDs are arranged in two strips, or sometimes […]

Filed Under: Lamps and Lights Tagged With: 74LS164, Chaser, Illuminate, LED, LEDs, Mode

Simple H-Bridge Circuits Using BJTs and MOSFETs | No Need of Driver ICs

Last Updated on June 30, 2026 by Swagatam 4 Comments

An H-bridge is one very useful circuit arrangement which lets us reverse the polarity across a load, so now with one DC supply we can make current flow through the load in both directions alternately. Because of that, these H-bridge circuits get used in many places like DC to AC inverter circuits, transformer drivers, bidirectional […]

Filed Under: Inverter Circuits, Motor Controller Tagged With: BJTs, Bridge, Circuits, MOSFETs, Need, Simple

Automatic Ultrasonic Water Pump Motor Controller Circuit

Last Updated on May 14, 2026 by Swagatam 31 Comments

Transmitter

This project explains how to build a fully automatic ultrasonic water level controller where the water pump motor starts automatically when the tank level goes below a preset LOW level and stops automatically when the tank becomes FULL. The whole system is wireless, reliable, and there are no corrosion problems because the ultrasonic sensor never […]

Filed Under: Arduino Projects, Water Controller Tagged With: Automatic, Controller, Motor, Pump, Ultrasonic, Water

50A High Current Sensor IC ACS758: Circuit Diagram

Last Updated on June 12, 2025 by Swagatam 5 Comments

So in this post we will try to understand everything about ACS758 current sensor, how this works, how we can use it, what is the technical specs, what is inside this IC and how to use in real circuits etc. This ACS758 is actually made by Allegro Microsystems and this is a very strong and […]

Filed Under: Sensors and Detectors, Voltage Control and Protection Tagged With: 50A, ACS758, Current, High, Sensor

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