Developer guide

Steps:

• To upload firmware to your Arduino you have to install Arduino IDE. Also if your Arduino board is not original one but is a "replica", you should install additional driver for communicating with PC from the vendor of the board. Usually the chip is CH340. Its driver can be found here. It doesn't require special settings.
• Next step is setting up you IDE. To do this go to Tools > Board to select your board (we use Arduino Nano). Go to Tools > Processor to select processor of your board. Sometimes there can be options with "Old Bootloader": if there are any errors try to choose this one (it means that your device has old version of software updater).
• Mainly there are no COM ports in system so if you correctly install driver for your Arduino board (for original drivers are installed with Arduino IDE) you can see here something like COM3 (number can be other). Select this option and press Upload (or Ctrl + U) to upload your sketch to board.

Arduino connection specification

Joystick button	Arduino Pin
Left Trigger	D2
Right Trigger	D3
X button	D4
A button	D5
B nutton	D6
Y button	D7
L function button	D8
R function button	D9
L joystick button	D10
R joystick button	D11
Left joystick vertical	A0
Left joystick horizontal	A1
Right joystick vertical	A2
Right joystick horizontal	A3

Shield pinout

Purpose	Pin
GND	1
Vin	2
Left trigger	3
Left function key	4
Right function key	5
Right trigger	6
X button	7
Y button	8
B button	9
A button	10