This Automatic Light Control Circuit using LDR and LM3909 IC is small and smart light sensor circuit. It can feel light and dark like magic. It uses one LDR and one LM3909 IC. When dark come, LED turns ON. When light come, LED goes OFF. It is perfect for night lamps or auto lights. Circuit […]
LDR Light Sensor Circuit using BC547
This LDR Light Sensor Circuit using BC547 works by itself. When it is dark the LED turns ON. When light comes then LED turns OFF. LDR feels the light and controls the LED. No need to press any switch. Circuit is simple and is with very low cost. It is good for small night lamp […]
Chirping Sound Buzzer Circuit
This is a simple circuit that makes a normal buzzer produce a chirping or tweeting sound. It uses a 9V battery, two push buttons, one capacitor and a buzzer. No microcontroller or IC is needed. It works on charging and discharging of capacitor. This Chirping Sound Buzzer Circuit is good for beginners to learn. Circuit […]
Make Sound with Arduino using Buzzer Circuit
This project shows how to Make Sound with Arduino using Buzzer Circuit. Buzzer makes sound when we send signal from Arduino pin. We can use it for alarms, alerts or simple tones. Two versions are used here one with components and one with buzzer module. Arduino Coding: Code Explanation: Parts List: Component Name Quantity Resistor […]
Adjust LED Glow with Potentiometer Circuit
This project show how to Adjust LED Glow with Potentiometer Circuit. We used diode, resistor, battery and potentiometer. By turning potentiometer we can change voltage and LED brightness. Very easy to make and works with 9V battery. Circuit Working: Parts List: Component Specification Quantity Resistors 470Ω 1/4 watt 1 Potentiometer 100k 1 Semiconductors Diode 1N4007 […]
Arduino Based Control LED Light Circuit with Potentiometer
Want to make an LED glow bright or dim just by turning a knob? This simple Arduino Based Control LED Light Circuit with Potentiometer does that same thing. Turn the knob to adjust the LED light from soft to full brightness. It is a fun and easy way to learn how Arduino reads analog signals. […]