This project show how to make simple Arduino sine wave circuit with RC filter. Arduino cannot give real analog output, but it only gives PWM signal. So we use low pass RC filter to change PWM into smooth sine wave. Two potentiometer control amplitude and frequency. This circuit is very easy and good for small […]
Arduino Projects
Arduino Chirping Bird Sound Circuit
This small Arduino project make cute bird sound like real chirping. Which make our room feel like forest Only one button press and tiny speaker sing like little bird. Sound is clear and fun, anyone can make in few minutes. Very low cost and with very easy wiring. This Arduino Chirping Bird Sound Circuit is […]
Arduino Pitch Control Circuit using Potentiometer
This is a small Arduino tone generator project. It uses Arduino Uno, one buzzer, one potentiometer to change the pitch. This Arduino Pitch Control Circuit using Potentiometer is simple and easy to make. It helps beginners understand PWM, analog reading and digital output. We can use this project to learn basic sound making using Arduino. […]
Laser Light Alarm Circuit using Arduino
This article is for simple Laser Light Alarm Circuit using Arduino. A laser light shines on an LDR. When someone blocks the laser beam, the LDR changes its value. Arduino reads this change and turns ON the buzzer to make alarm sound. A reset button stops the alarm. The system is low cost and easy […]
Simple Sound Sensor Circuit with Arduino
This project show how to use sound sensor with Arduino. Sound sensor detect clap or loud voice. When sound come, Arduino turn ON LED and buzzer. This project for Simple Sound Sensor Circuit with Arduino help beginner understand sensor working. Arduino Coding: Code Explanation: Circuit Working: Parts List: Item Quantity Resistors 220Ω 1/4 watt 1 […]
Arduino and Joystick LED Controller Circuit
This project shows how to control many LEDs using one joystick and Arduino. The joystick moves in X and Y direction. Arduino reads this movement and turns ON or OFF the LEDs. This Arduino and Joystick LED Controller Circuit is simple to build. Good for beginners and Arduino lovers. Arduino Coding: Coding Explanation: Circuit Working: […]