DIY Arduino Powered IR Light Gun




Introduction: DIY Arduino Powered IR Light Gun

About: Retro/Light Gun game enthusiast from NZ.

The SAMCO is a Namco GunCon with the insides replaced with an Arduino micro controller and DF Robot IR positioning camera and works as HID mouse on LCD (flat screen) TV/monitors.

Gun currently works with Mame in RetroPie (for Raspberry Pi), PSX Beetle (PC/Windows), Saturn Beetle (PC/Windows) and PCSX2 (PC/Windows).


Quick calibration


Tilt correction


Adafruit ItsyBitsy 32u4 (3V), Adafruit ItsyBitsy 32u4 (5V), Adafruit ItsyBitsy M0, Adafruit ItsyBitsy M4 or HID compatible board (Note: Only Adafruit boards are compatible with the PCB's)

DF Robot IR positioning camera

x2 LED's

x2 100 ohm Resistors

Tall Switch (from Adafruit)

NEW PCB's AVAILABLE (Including GunCon 2) (optional)

Step 1: Schematic

This is the basic Schematic of the SAMCO Light Gun. Code will work with any HID compatible board.

Step 2: SAMCO PCB Soldering Guide

This a basic soldering guide if you're using a SAMCO PCB board.

Step 3: Code

Link to the libraries & code

Step 4: Test Your Gun Setup/Troubleshooting

Step 5: Introduction & RetroPie Setup

Step 6: PlayStation 1 + SEGA Saturn (RetroArch) Setup

Step 7: PlayStation 2 (PCSX2) Setup Guide

Step 8: Demo

Step 9: Future Development

Adding a 4 LED sketch to reduce working distance.

Step 10: Future Development (cont.)

Updated to include saved calibration & increased accuracy.

Step 11: New Range of PCBs

Step 12: GunCon2 Build Guide

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    Question 8 months ago on Introduction

    This is a really cool project. Have you given it a go with Ubuntu (and PCSX2 there) thanks!


    Question 1 year ago

    Hi mate

    Great project! I was wondering how bad the latency really is when you are using it as a mouse and or in games? I have seen the videos but you do not really notice it?

    Also I have ordered all the parts included the PCB, will that PCB work for a Adafruit Itsy Bitsy 32u4 - 5V 16MHz which is what is listed on this page. But will the pin layout be right for the PCB as you mentioned you had to swap two pins?

    Look forward to hearing back


    2 years ago on Step 7

    is it work on FPS gaming like call of duty? since game like FPS cursor position is always in the center of display,cmiiw