This project shows about Smooth Servo Rotation Circuit with Arduino and Potentiometer. Turn the knob and see servo arm moves smooth from 0° to 180°. Easy and fun to learn how Arduino reads analog signal and makes motion. Its a good project for beginners in robotics, automation or motor control. Arduino Coding: Coding Explanation: Circuit […]
Temperature Controlled LED Circuit
This small Temperature Controlled LED Circuit can feel the heat! When place near warm thing, it sense temperature and LED glow. It work very simple using one diode and one transistor only. No microcontroller, no sensor IC, just few parts. We can build it easy at home and see how heat make light turn ON. […]
LDR Based Dark Sensor Circuit
This small LDR Based Dark Sensor Circuit is very smart. It can see light and dark using LDR. When there is light, everything stay quiet. When it becomes dark then LED start to glow and buzzer makes sound. No need to touch anything it works by itself. It is easy to make with low cost […]
Automatic Light Control Circuit using LDR and LM3909 IC
This Automatic Light Control Circuit using LDR and LM3909 IC is small and smart light sensor circuit which can feel light and dark like magic. It uses few circuit parts like LDR, LM3909 IC, capacitor and an LED. When dark come, LED turns ON and when light come, LED goes OFF, which is perfect for […]
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 […]