Atari Jaguar controller to USB adapter
I had to convert an Atari Jaguar controller to USB for a customer. As usual,
I decided to make the schematic and firmware for this project available to everyone.
No drivers required. Implements a standard USB HID device.
Tested under Windows and Linux.
All 17 buttons are usable.
Works great in Virtual Jaguar.
Controller Button PC Button
# 17 Picture Gallery
Jaguar controller with surface mount circuit installed inside:
With Virtual Jaguar
Ready to use Jaguar controller to USB adapter from
my online store
I used my usual Atmega8 circuit with a custom firmware using the
Development AVR-USB device implementation
Here is the core schematic. For wiring the controller, use the table below.
I/O Micro. #pin HD15 Couleur Description
PC5 1 Brown Column [N/A,opt,3,6,9,#]
PC4 2 Red Column [N/A,C,2,5,8,0]
PC3 3 Orange Column [N/A,B,1,4,7,*]
PC2 4 Yellow Column [Pause,A,East,West,South,North]
PC1 6 Blue Row [Pause,N/A,N/A,N/A]
PC0 10 Black Row [A,B,C,opt]
PB5 11 Grey Row [East,1,2,3]
PB4 12 Pale Blue Row [West,4,5,6]
PB3 13 Pink Row [South,7,8,9]
PB0 14 White Row [North,*,0,#]
VCC 7 Green Power
GND 9 Purple Power
U2 Atmega8 microcontroller. ATMEGA8-16PC, ATMEGA8-16PI, ATMEGA8-16PJ or ATMEGA8-16PU. Don't use an ATMEGA8L-*, the 12Mhz clock would be too high.
R1 1.5k resistor. Ordinary carbon film 1/4 watt resistors will do.
R2, R3 68 ohm resistors. Ordinary carbon film 1/4 watt resistors will do.
D2, D3 3.6 volts zener diodes.
Y1 12 Mhz crystal.
C2, C3 18 pf capacitors. If the crystal datasheet recommends another value, use it instead.
C1 1uf capacitor. Install it near the ATmega8 power pins.
J2 6 pin header, 2.54mm spacing. Needed for programming the ATmega8.
For the USB connection, just strip the USB cable and solder the wires directly
to the board. USB uses standard wire colors, but beware of cheap cables using
non-standard color codes.
Red +5 volts
White D- Firmware
Version v1.2 November 20, 2016 (Sunday)
File(s): jaguar_usb-1.2.tar.gz (91.9 KB)
jaguar_usb-1.2-atmega8.hex (7.4 KB)
jaguar_usb-1.2-atmega168.hex (7.7 KB)
Version v1.1 January 28, 2015 (Wednesday)
Updated code for modern compilers Updated V-USB Init code reworked Use new USB VID/PID File(s): jaguar_usb-1.1.tar.gz (91.2 KB)
jaguar_usb-1.1.hex (7.6 KB)
Version v1.0 January 23, 2009 (Friday)
File(s): jaguar_usb-1.0.tar.gz (72.5 KB)
jaguar_usb-1.0.hex (8.1 KB)
The source code above (.tar.gz files) is released under the GPLv2 license.
Pre-compiled files (.hex format) are also available.
Many microcontrollers have what is called 'Fuse bytes'. In the case of the ATmega8, there
are two bytes: The high byte, and the low byte. Those bytes are used to configure some aspects
of the microcontroller. What type of clock to use? Crystal? Resonator? Internal RC clock? Allow
programming via ISP? It's very important to set the fuses to the right values. Using the wrong
values can render your MCU unusable.
For this project, here are the appropriate fuse values:
high byte =
, low byte =
For details about how to program an AVR,
PCB for surface-mount
The surface-mount version uses my
Here's a picture of this circuit with a few labels to ease wiring:
I cannot be held responsible for any damages that could occur to you
or your equipment while following the procedures present on this page.
Also, I GIVE ABSOLUTELY NO WARRANTY on the correctness and usability
of the informations on this page. Please note, however, that the procedures
above have worked in my case without any damages or problems.
Now you cannot say that I did not warn you :)