Modern devices and homes need good temperature control. It help gadgets live long and make place comfortable. One example is fan with temperature control. Fan change speed by room temperature. This keep temperature okay, save power and with less noise. IC LM35 sensor is used for check the temperature. When it is too hot 5V […]
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Arduino Based Air Quality Monitoring Circuit
Arduino Based Air Quality Monitoring Circuit check bad stuff in air like CO2, VOCs and PM. It uses Arduino microcontroller and many sensors to check air quality. Arduino read sensor data and then send to computer or cloud or show on small screen (LCD). People like this design because it is cheap, easy and useful […]
How to Create a Water Level Sensor Circuit with Arduino
For fun and learning project. We learn basic electronics, coding and sensor uses. Here we will learn How to Create a Water Level Sensor Circuit with Arduino This guide teaches us how to make water sensor. It is good for stopping overflow, checking water in tank or auto watering plants. We can use Arduino Uno […]
DIY Variable Power Supply Circuit using Arduino
This DIY Variable Power Supply Circuit using Arduino makes changeable power. It uses transistor and resistors to change 9V output from IC 7809 regulator. One 100uF capacitor help clean the output voltage. Two pushbuttons can change the voltage by hand. LCD screen show real output voltage. Coding: Code Explanation: Circuit Working: Parts List: Component Quantity […]
Digital Code Lock Circuit using Arduino
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 […]