Lab Note The hardware configuration described have been tested with an Arduino UNO R3, a 16×2 LCD, and an I2C LCD backpack purchased from an eBay seller. Further, the example sketch has been fully ...

Normally driving an LCD requires seven connections to pins on the display, but by using a shift register, [Phillip Warner] at Arduino Playground was able to drive an LCD using only 3 wires. The met… ...

However, I used the official Arduino Starter Kit ($100), which includes everything I needed, minus the nuts, bolts, wires, and ring terminals for making the soil probes. Wiring the Hardware ...