The LCD display showed moisture, temperature, and light readings in variable resistance values, so I needed to calibrate the data to understand what it all meant.

By the way, we’ve covered a PID library for Arduino before. While this post talks about temperature, PID control is used for everything from flight control to levitation.

With all the information decoded, wires were soldered so he could hook up an Arduino, and the cut tracks repaired. Since the LCD was a multiplexed display, the bias voltages were at four levels.

Parts and tools Arduino UNO LM35 Temperature Sensor (Celsius) – datasheet Relay Module ( May refer to my previous post on how to make a relay module) A 9V battery (To supply to the coil of relay and ...

This project uses a $30 Arduino Uno R3, an RGB LCD display, a waterproof temperature sensor, food grade heat shrink, and a few other components, all of which are available at the link below from ...

The arLCD is a smart 3.5" color touchscreen LCD Arduino combo board that brings easy-to-program, smartphone-like user interfaces to the Maker Community. Release 2.0 is endorsed by Arduino by being ...