This project is for making a small robot car. Robot can move and avoid obstacle on road. It uses Arduino Uno, ultrasonic sensor HC-SR04, motor driver L293D and two DC motors. This Arduino Based Obstacle Avoidance Robot Circuit is simple and good for beginners. Robot check distance with ultrasonic sensor. If obstacle is near then […]
Arduino Based Automatic Gate Opening and Closing Circuit
This project is for Arduino Based Automatic Gate Opening and Closing Circuit. This system uses Arduino UNO, Ultrasonic sensor, NPN transistor, Servo motor, LCD display ,12V battery and few resistors. When someone comes in front of the gate the ultrasonic sensor detect distance and send signal to Arduino. Arduino then control motor to open or […]
POV Project with LEDs and Arduino Circuit
POV means Persistence of Vision. Our eyes cannot see very fast blinking light separately. If light blinks very fast then we see it like a line or picture. Using this idea we can create letters or shapes with some LEDs. Arduino controls LEDs in speed to make effect of display. This project uses Arduino Nano, […]
Single Transistor Theremin Oscillator Circuit
Theremin is one very old electronic music instrument. It make strange space type sound without touching any part. Human hand move near antenna or plate and the pitch of sound changes. This happen because hand change the capacitance value near the circuit. In this article we will show very small and Single Transistor Theremin Oscillator […]
Electromagnet Levitation Circuit with Hall Effect Sensor
Magnetic levitation is fun science project. In this Electromagnet Levitation Circuit with Hall Effect Sensor, small magnet can float in air without a touch. It use electromagnet and hall sensor. Hall sensor see magnet position and transistor gives current to coil. This make balance of magnet force and gravity, so magnet look magic floating. It […]
Simple Digital Thermometer Circuit with IC LM35
This is a small and Simple Digital Thermometer Circuit with IC LM35. It uses LM35 sensor IC. The circuit show temperature in voltmeter. It is cheap and very easy to make. Good for students and DIY beginners. Circuit Working: Parts List: Component Value Quantity Resistors 10k 1 Preset 2k 1 Semiconductors Voltmeter 200mV 1 IC […]