Nowadays, security is important everywhere in the world, and it becomes even more critical in sensitive or restricted areas. Therefore, this Digital Code Lock Circuit using Arduino helps improve security by providing controlled access. Also, it use Arduino, small computer to make simple lock and with Arduino UNO, keypad, buzzer, LCD (16×2), BC547 transistor and […]
Hobby Circuits
Simple Heartbeat Monitor Circuit using Arduino
In this post we will show how to make Simple Heartbeat Monitor Circuit using Arduino. First, when we put finger on sensor it count heartbeats per minute and this is important because heartbeat tells doctor about our health. Here, we use Arduino UNO, LCD screen, two buttons, one resistor and heartbeat sensor to build it; […]
Simple Servo Motor Controller Circuit using Arduino
Servo motor is small machine part that can turn to exact position and also people use it in many things like robots, CNC machines and factory machines. Furthermore, this post for Simple Servo Motor Controller Circuit using Arduino show how to control servo motor using Arduino; it also use push buttons, capacitors, resistors and IC […]
How to Measure Humidity and Temperature using Arduino and DHT11
This project show How to Measure Humidity and Temperature using Arduino and DHT11, as this DHT11 give temperature in Celsius and humidity in percent and then Arduino read sensor and show on LCD. Also, this circuit is good for checking room, garden or weather and furthermore, it is good for learning how sensor and Arduino […]
Simple LED Flashing Circuit with Arduino Uno
This project for Simple LED Flashing Circuit with Arduino Uno is simple guide to learn electronics and Arduino; also we can learn connect parts and use code to blink LED. Therefore, it look easy but help us learn big and understand hard projects later. Arduino Code: Code Explanation: Circuit Working: Parts List: Components Quantity Resistor […]
Headphone Amplifier Circuit using IC LM4880
Clear, high-quality sound matters in audio electronics; therefore, this article presents a simple headphone amplifier circuit that uses the LM4880 IC, a chip specifically designed for headphone applications. Furthermore, IC LM4880 is with low noise, low distortion and gives good sound with little power; it works with 2.7V to 5V and so it is good […]