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Adjust 1602 LCD contrast easily with Arduino simple Arduino tutorial

In this video I'll be showing you how you can control the contrast and the back light brightness of a 1602 LCD display with just the Arduino. The contrast is typically adjusted with a variable ...
GitHub

Simple to use Arduino library to interface to HMC5883L Magnetometer (Digital Compass)

This library makes getting a compass heading from an HMC5883L Magnetometer very simple, it includes adjustment for your local Magnetic Declination which can be entered directly in degrees minutes and ...