Make Heavy Barrel into MAME?

[toaddawet]

Hey Guys-
I have a working Heavy Barrel that I was thinking about turning into a MAME cab with multiple "rotary joystick" style games. So my question: what do I need in order to use my original rotary joysticks in MAME? The player 1 joystick is fine, though the player 2 joystick "sticks" a little on rotation. Another question: Are there things I can do to make the joysticks better/repair them?

Thanks everyone!

[lilshawn]

http://forum.arcadecontrols.com/index.php?topic=28722.0

has some of the info you so desire.

[PL1]

I have a working Heavy Barrel that I was thinking about turning into a MAME cab with multiple "rotary joystick" style games. So my question: what do I need in order to use my original rotary joysticks in MAME? The player 1 joystick is fine, though the player 2 joystick "sticks" a little on rotation. Another question: Are there things I can do to make the joysticks better/repair them?

Insert obligatory "Please don't maim for MAME." request here.
- It's not difficult to make adapter cables so you don't have to hack the original harness.

The wiki has a list of rotary joystick games and the proper MAME settings for keyboard-style encoder outputs.
http://wiki.arcadecontrols.com/index.php/Joysticks#Mechanical_Rotary_Joystick_Games_.28LS-30.2C_Happ_Mechanical_Rotary_Sticks.29

There's also a guide for servicing the rotary switch.
http://wiki.arcadecontrols.com/index.php/LS-30_Switch_Service

To use your rotary joystick with MAME, you'll need a mechanical rotary encoder.

- Ultimarc discontinued their plug-and-play rotary encoder.


- Ultimarc U-HID requires 4 diodes and special wiring to convert the rotary switch to quadrature waveform on two data lines. (U-HID sees the data lines as mouse/spinner/trackball inputs)
http://www.u-hid.com/appnotes/AN1001.pdf

- GGG GP-Wiz40
http://groovygamegear.com/webstore/index.php?main_page=product_info&cPath=76_81&products_id=235

- KADE miniArcade 2.0 firmware on an Arduino Micro, Teensy 2.0 or MattairTech MT-DB-U4.
NOTE: One Arduino Pro Micro will not support two rotary joysticks because port C7 (Rot. 2B) is not available.
http://forum.arcadecontrols.com/index.php/topic,154126.0.html




Scott

[toaddawet]

Wow! Thanks Scott, this is exactly the kind of thing I was looking for. And no worries--no plans to "maim" for MAME Anything I set up will be completely reversible. I just want to know if it's possible, and/or worth the time to do a multi-rotary cab in this way. I've got some reading to do--thanks again for the great info!

-Rob

[PL1]

Glad to assist.   

no plans to "maim" for MAME

Scott