|20x4 LCD module|
|LCD Shield with buttons|
|Arduino breadboard with LCD|
|16x2 LCD, 16 pin male header & trimpot|
The LCD should lit up, with a full single line bar. If the bar is not visible, adjust the trimpot/preset/ for the contrast level until it is visible. If you do not have a trimpot/preset, just wire pin 3 to the common Gnd but you cannot control the LCD contrast level.
Remember to hook up the +5V and Ground from the Arduino to the power rails on the breadboard. For my cables, red is +5V, while is ground.
|Arduino 16x2 LCD power connections|
|Arduino 16x2 LCD Data connections|
|Arduino 16x2 LCD all connections|
|20x4 LCD with large fonts|
The above is a photo of Arduino on breadboard with 20x4 LCD module displaying custom large fonts.
|LCD on Protoshield|
|Protoshield LCD connections|