The 12th pin was connected to the data pin of the transmitter module. You can refer to the image below for a clearer view of the circuit connections and placement in the helmet. All the modules are ...

4. Within the Arduino IDE, select "Sketch" -> "Include Library" -> "Add .ZIP library", then select the downloaded zip file. This should add the library. To use the library, you'll have to include the ...

This library allows an Arduino board to control LiquidCrystal displays (LCDs) based on the Hitachi HD44780 (or a compatible) chipset, which is found on most text-based LCDs. This library is free ...