Autofire PCB DIY KIT for Samducksa SDB-202/SDB-202C

Autofire PCB implement the autofire function to arcade button.Samducksa button is not included.   Setup : Place Autofire PCB on the button and solder two brass pins Connect the POWER wire, and then connect the power wire to 5V or 3.3V on the control board. (POWER wire is included on package) Connect the GND wire Connect the SIGNAL wire Connect external button for adjust autofire function (OPTION)   Features : Compatible with Samducksa SDB-202/SDB-202C button (not included) LED indication of current statusWHITE : autofire OFF (works as normal button)RED - 5 pushes per secondGREEN - 10 pushes per secondBLUE - 15 pushes per second Built-in button to adjust autofire function. (turn on/off, autofire rate) POWER wire (30cm) 16mm external buttons to adjust autofire function (40cm) DC 3.3V ~ 5V is needed to work