Security is important everywhere in world and is more hard in secret places. This project for Digital Code Lock Circuit using Arduino help make better security. It use Arduino, small computer to make simple lock. With Arduino UNO, keypad, buzzer, LCD (16×2), BC547 transistor and resistors it show how digital code lock work. User must […]
Simple Heartbeat Monitor Circuit using Arduino
In this post we will show how to make Simple Heartbeat Monitor Circuit using Arduino. When we put finger on sensor it count heartbeats per minute. This is important because heartbeat tells doctor about our health. We use Arduino UNO, LCD screen, two buttons, one resistor and heartbeat sensor to build it. Sensor catches heartbeat […]
Simple Servo Motor Controller Circuit using Arduino
Servo motor is small machine part. It can turn to exact position. People use it in many things like robots, CNC machines and factory machines. 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 7809 for power. […]
Simple Arduino LED Dimmer Circuit using PWM
This post show how to make a Simple Arduino LED Dimmer Circuit using PWM. PWM changes voltage by changing square wave duty cycle. It changes duty cycle to make LED more or less bright. More power means more brightness. Coding: Circuit Working: Parts List: Component Quantity Resistor 220Ω 1/4 watt 1 10k 1/4 watt 2 […]
Arduino Temperature Controller Circuit using DC Fan
This article show how to make Arduino Temperature Controller Circuit using DC Fan Arduino UNO, LCD, transistor, DHT11 sensor and with few resistors. It show temperature and fan speed on LCD and control fan speed based on room temperature in home or office. Fan turns ON and OFF automatic when temperature goes above or below […]
How to Measure Humidity and Temperature using Arduino and DHT11
This project show How to Measure Humidity and Temperature using Arduino and DHT11 DHT11 give temperature in Celsius and humidity in percent. Arduino read sensor and show on LCD. This circuit is good for checking room, garden or weather. It is also good for learning how sensor and Arduino work together. Coding: Code Explanation: Circuit […]