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
LCD display i2c library

#include <Wire.h>
#include <AM2320.h>
#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x3F, 20, 4);
AM2320 th;
int led2 = 12;

how to take a screenshot on PC

Hello everyone, today I'm going to show you how to take a screenshot on a PC (windows10). The methods are easy and you don't need to install third-party software.

Method 1 | Use Window key + Print Screen

This method is the easiest way to capture screenshot on a PC but you can't adjust anything such as file type, capture area so you need to edit image size and area in photo editor software again.

Window key and Print Screen key

Method 2 | Use snipping tool software (Factory software on Windows 7 to 10)

Sometimes you may don't know that windows 7-10 have a Snipping tool software, you can use the software to capture any content that shows on your computer screen and save it as png, gif or jpeg file. You can also choose an area that you want to capture such as Free-form, Rectangular, window or the whole screen. All you have to do is just click window key + S and type snipping and click the program.

Snipping tool software