Humidity sensor with led alarm | Arduino project
This page contains Arduino Humidity sensor with led alarm source code. This project is good for someone who wants to make a humidity meter or hygrometer with led alarm if humidity and temperature over a threshold. It's easy to make and doesn't require an external power supply, just use power from an Arduino UNO R3 board (USB power compatible with this project). Electronic components list: 1 x Arduino Uno R3 1x 20 x4 I2C LCD display 1 x AM 2320 humidity/temp sensor 1 x 5 mm led ( 2 x if you plan to use led for pin 13 instead built-in led) 1 x 1000 ohms resistor ( 2 x if you plan to use led for pin 13 instead built-in led) Any USB power adapter, 500 mA current at least. Here is the Arduino code: AM 2320 library https://github.com/hibikiledo/AM2320 LCD display i2c library https://github.com/fdebrabander/Arduino-LiquidCrystal-I2C-library #include <Wire.h> #include <AM2320.h> #include <LiquidCrystal_I2C.h> LiquidCrystal_I2C lcd(0x3...