MMOS controller with cheap servo drive and motor

Hi Folks,
I've been lurking around here for a while, I keep an eye on whats happening in the land of stepper sim wheels.
Now I was involved with a project on hackaday.io

https://hackaday.io/project/44385-smoothstep-force-feedback-steering-wheel

I wasn't the owner but I was the hardware guy, and I did get the thing up and running. It is me doing bad laps of brands hatch in the demo video

I'm keen to try out different ideas. I'd be quite happy to ditch MMos and try openFFB on a stmF407 dev board. Also I'd like to try the cheapo servo drive system. The main problem with my initial stepper drive is it has no fail safe in the code. I stripped out as much as possible to get the loop speed up. currently running at 28Khz it is true real time field oriented control using a 3 phase inverter dev board. so that' measure the electrical angle, read the required torque value, calculate the currents for each winding, measure the current in each winding, compensate error in each winding, then apply this current to each winding in real rime.

Problem is I'm no software engineer, I know enough to get by but, don't know how to build in safety features or develop it further so I don't have to run the whole thing from the debug window in the dev software. Any softies feel like helping out?

Matt

Hi everyone, it's been a while since I've been trying to self build my DD steering wheel following this guide, I managed to interface the arduino board and stm in fact I can use the steering on ACC, but I have a very big problem, I can't to interface the hbs860h drive of my stepper motor with the pc, so I cannot enter the values indicated in this forum, the result is that the stepper motor blocks and cancels any resistance from it. I tried everything, I bought both the cable with built-in usb adapter and the cable with db9 output for the pc board, every time I try to pair them the pc doesn't see the serial connection with the stepper motor drive. Maybe it's the drive output that doesn't work, I'm thinking of replacing it, but first I'd like to ask some advice from you. It's a nice project I would like to see it work properly. Help me.

Maybe there is a problem with the cables you are using to connect the PC to the driver. The first one I bought didn't work, then I bought one of better quality, and that worked OK. Also, the cable that you plug into the hbs860h is not a standard cable, the connection is specific for the driver. Best thing is probably to get that part of the cable from the company that sold you the driver.
Also, the software you use to change the servo driver settings has to be specificly made for the driver, best thing would probably be to get that also from the company that sold you the driver.
Just a few suggestions, hope it helps...

The cables I bought and tried are these: https://www.ebay.it/itm/122205872119 and this but none of them worked.
The software i used i got it on this site https://mecheltron.com/en/software-archive HBS_English_setup 2013-03-22.rar.
But the software has little to do with it as the PC in device management does not detect any connected serial.
Could it be that it is not compatible with windows 10 or am I talking nonsense?

This is the link of the other cable I forgot above
://www.amazon.com/gp/product/B082CH934J/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1

I am not an expert at all, but it seems to me if Windows 10 doesn't register the USB to RS232 Cable at all, then there is a problem either with with Windows or the cable. Maybe you need to install some Windows driver to use the cable, but I guess when you plug in the USB to RS232, at least Windows should register an 'unknown USB device'?

The usb cable is recognized by windows and all the required drivers are updated, but the driver of the step motor is not detected, I tried to change the PC but I have not solved it, I know that in order not to abandon the project I have to buy a new driver for the my engine, I thought I was taking hbs86h same as the one you used in your project

This is the protuner software that I used, maybe it works better:

https://www.dropbox.com/s/usv9b2xurvfvhxr/ProTuner_HBS_Setup_2012-10-18.exe?dl=0

Nothing, I tried it but the serial link is not recognized.
Thanks anyway

Many of these cheap stepper drives, are missing the RS232 interface chip inside, even if they have the rj12 connector... they won't connect to PC no matter what.





Thanks
Thanos

I checked, it seems that the RS232 interface is there, I'm waiting for a new driver to arrive

Beginners question I am using a quick release hub how do I mount it on servo motor? Thank you.