Recent content by ArcadeMachinist

https://www.mouser.com/ProductDetail/TE-Connectivity-AMP/1-643075-2?qs=CeBrVNDiBTN2lwIeo%2FWN%252BA%3D%3D No. Have frew screenshots from here and there. Still hunting for the whole manual. But I have documented the wiring pretty good by now.

I'll post this video for reference. What you see is an Arduino based "position decoder", that reads L and R motors target position and speed from the main CPU, connected instead of the original motion board. I wouls post source code, if anyone needs it.

Checking interest. I love this machine, but past 1.5 years I had 0.00 time for Arcades. I work 10h/day job and just do not have any time to spare. SEGA G-Loc Game works, motion does not. Missing 1 motor PCB. However now the cabinet is retrofitted with servos. I did make Arduino based interceptor...

SOLD

BUMP. Still available, shoot your offer, need space.

It looks like RS232 control is the way to go. The most important feature of it - the motor driver itself is capable of handling Accel/Decel calculations. I would still run some more tests, like if the speed change is immediate and can be set while the motor is running (why not, but who knows)...

The pulley is 14mm shaft diameter, 5x10mm pin, 68mm OD, "Type A" V-Groove belt. I would say motors have enough juice and they hold very well. Extra 100kg in the seat make no difference, just 1.5A extra draw (for 2 motors combined) They are also fast enough, just require some tweaking. Eg...

Well, I can achieve same speed as original motors, but only for 1 drive at a time. If I use AccelStepper or MobaTools - the calculations for 2 steppers would make AtMega2560 too slow. If I use my own simple calculations (just to prevent motor stalling from high speed to 0) - i can do both...

I have AfterBurner Climax Lindbergh, I may fit into GLoc as a swappable board. That's just a test. However there would be some challenges with the speed to solve. AccelStepper library can't do more than 4000 steps/sec on ATMega2560, which is too slow. Even with motor driver set to 200 pulses...

Sorry for the late reply. I do think they are JDEC. Most of G-Loc's mask ROMs are 512Kb. Rail Chase is cool. I wish I had a full hardware set.

After a long pause I'm back into this project. No one, even "professional" paid services, was able to restore or recreate my 2nd motor drive board. So, I guess, it was time to move on. Meet new, closed loop hybrid servo powered G-Loc! It turns out original G-Loc motors (SEGA 16611) are...

Update: CASE CLOSED Upon further investigating address and data lines with my scope I found out that one of the data lines behaves weird on SRAM chip pin. Doing some extra measurements it seems like there is a trace damage between EPROM socket and SRAM pin. However that trace is completly...

I had this board working about a year ago. Tried to run it yesterday and it would not boot. MAME for ref: https://github.com/mamedev/mame/blob/master/src/mame/sega/segaybd.cpp I looks like First MC68k CPU IC12 (315-5314 on MAME ascii art schematic), is stuck in a boot loop, 2 other MC68ks are...

Dropped a DM.

Free for anyone who wants it and pays shipping from FL 32218. These are 2 client terminals. The system usualy has a hub and 4 terminals. So you must already have a hub or willing to search for it on YAJ/elsewhere. I personally saw this thing connected to Dissidia FF cabinets. If no one...