Alright, got a replacement battery. I did the measurements again, turned out the ones i reported last time where incorrect. Sorry for the confusion. I completely unplugged the BTS 7960 and compared the two non-functional to the working ones. The enable Pin has 5V on the working one and 0V on the dead ones. Also, the various Pins on the Arduino have different voltages. The blinking one has voltage on A1, A2, A4 and A6 and one on the digital pins. The other dead board has voltage on A2 and nothing on the digital pins. The working one has 5V on pin 3 and 2.9V on A2.

Do you think there is a chance a re-flash could help? Is it better to just replace the arduinos?

Would this be the correct arduino?
https://www.amazon.de/Atmega-16MHz-FT232RL-Serial-Converter/dp/B07MJCN9VB/

If i do the replacement, would you provide the firmware?   

Again, thank you for helping out!

On the Arduino side. Will need to replace the battery in the voltmeter, though. So I am not 100% sure, if the readings are correct. Will provide more details on where exactly I measured once the battery is replaced. Are there any measurements that would be of interest to you?

Good point. I did some more measuring:

Defective unit (the one without blinking LED):
BTS7960 connected to enable pin: 0V
BTS7960 NOT connected to enable pin: 1V

Working unit:
BTS7960 connected to enable pin: 8V
BTS7960 NOT connected to enable pin: 8V

Thank you for your time and help!

Today I checked the other defective board and found no voltage on the enable pins. The functional board has about 8V. Also, on this board the second LED on the arduino was blinking rapidly. Is this some kind of error code or just the constantly rebooting arduino?

Thanks!

Did some testing and here is what I found so far. First, to test the BTS7960 i unplugged the jumper wires on the BTS7960 and connected the LPWM, RPWM and the bridged enable pins from the functioning PWM2HAPP. Controlling the BTS7960 from the functioning PWM2HAPP worked, the motor was spinning. Strangely it only worked in one direction but at least there was movement. So I guess the BTS7960 is working.

Then I checked voltages on the pinheader and compared them to the working unit. The working one has 6V on the enable pins while the other had no voltage. I tried to trace it back but without any success.

I also tried providing 6V to the enable pins, but that did not help.
I would like to trace back the missing voltage on those pins to find the defective part, maybe you have an suggestion where to start?

And yes, I indeed did not see the bridged enable pins. They are bridged now.

Thanks!

Today the new BTS7960 was delivered. Unfortunately, the board is still not working. Since many reviews on amazon report defect devlieries I plan to test the BTS7960 with a different Arduino. Is there anything i can debug on the PWM2HAPP, except the serial command from your last reply? Both Leds are on and the mosfet is getting quite warm/hot.

Ahh, I see. Looks like its easy to change. Can I order any bts7960? The link you provided is from amazon.com, I would order from amazon.de, tough. They have plenty of bts7960 but I am not sure which one to take. Some products are described as bts7960:

https://www.amazon.de/BTS7960-Driver-Dealikee-Arduino-Current/dp/B09FLB44TV
while others are BTS7960B, with the B in the end:

https://www.amazon.de/JZK-BTS7960B-Double-Stepper-H-Bridge/dp/B09HGBM5D2
 Does ist matter, which one I take?

This one looks like the one from the link you provided:
https://www.amazon.de/BTS7960-H-Bridge-Stepper-Strombegrenzung-Halbleiterk%C3%BChlung/dp/B07Y4TTK3Z/

Great, lets try it with the arduino from amazon. I think I should be able to do the soldering and flashing. It is a Mega328PB-U, correct? I acutally still have a Mega328PU-KR lying around but it has a different pinout and size. If you can provide the firmware and maybe some help with flashing, I would order the modules. Would  be awsome!

So does this mean something is wrong with the arduino? Is there any way to check if it is the module or the high power part of the circuit board?

Since 2 of the boards failed I was thinking that maybe there was a problem with the power supply. I run 2 of them with this power supply:
https://www.amazon.de/gp/product/B01LAVDD8S/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
The other pair uses old laptop PSUs with 19V. Those with the laptop PSUs are the dead ones. Could this be a coincidence?

Thanks for helping me out!

Are those of any help?

The boards were made in May 2023, where there any updates since then? Should I send all 4 boards to get the updates or just the 2 dead ones?
Thank you!

I have 4 cabinets with PMW2HAPP, all of them used to work properly. I was not using them in a while and now i realized that 2 of them lost FFB. Since other 2 are still operating as always, I switched the PWM2HAPP boards to see if it was a software or hardware issue. Seems my boards are dead. FFB works with one board, but not the other. LEDs look identical, but there is no current on the motor terminals.
Is there anything i can do to narrow down the problem? Are there any fuses on the board that could have burned ? Any measurements I could do to find an replace the broken parts?

Thank you for your help!

Hello,
I am thinking about purchasing a Taito WGP Deluxe cabinet. I don't know much about its condition except what can be seen from the images. I would like convert it to PC while keeping the original hardware and be able to restore it to its original state if needed. As far as I know the steering is done with the handlebar and the bikes body is tilted acordingly. Is there any chance to control the motor with an arduino (or something simmilar to WM2HAPP, PWM2M2, etc..).

I could not find a manual for the deluxe version and don't know what kind of motor/controlboard is built in. Does anyone have experience with this machine?

Thanks!