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    roguish
    @roguish:matrix.org
    [m]
    @boerderpatrol: are they STMBL drives? if so, how old? who made them? what version? etc, etc, all the details possible.
    @boerderpatrol: also, there is a 'user exchange' section in the Linuxcnc forum. you could post it all there.
    boerderpatrol
    @boerderpatrol
    Yes they’re version 4.4 6 of the drives were made in China and assembled by Andy I think? 6 were made in China and have not been fully assembled just populated boards ready for the irams and capacitors
    So actually subtract 6 irams they’re for the drives that haven’t been fully assembled.
    I think 6 of the drives were made in 2016 and the others were made 2020
    bobkermann
    @bobkermann
    very interested too. even by the pcb populated without irams.
    boerderpatrol
    @boerderpatrol
    Well yeah they’re ready to go just solder in the irams and the capacitors, I have it all in the lot.
    You could call it the SuperStmblValuePack
    One of the assembled drives is bad but I have a fully populated board to replace it not part of the 12 pack
    bobkermann
    @bobkermann
    ok. consider that there are already 3 acquired. what price?
    boerderpatrol
    @boerderpatrol
    $255 a piece though I’d certainly prefer to sell the lot and be done with it.
    Itching to gut these beasts, make the adapters and call it done.
    But the sale of the stmbls pays for the Chinese drive kits.
    boerderpatrol
    @boerderpatrol
    Good luck in you alls projects, thanks devs, if you want any remaining drives talk to @DMS-Sci farewell!
    highbiker
    @highbiker
    Hi,
    @Borderpatrol offered STMBLs of version 4.4. But on Github I can only find version 4.3.
    Where do I find version 4.4?
    Thanks in advance
    DMS-Sci
    @DMS-Sci
    @boerderpatrol sold me all of his STMBL drives. There are 6 completed v4.1 drives, and a partially completed v4.3. I was going to test them to make sure they work then offer them to the forum here.
    DMS-Sci
    @DMS-Sci
    20220505_135709.jpg
    focus-tec
    @focus-tec
    hello! I need help. I want to connect via usb to hv board, but there is no usb_device.c file. if i use libs from stm32cube it doesn't work. how can I do it?
    Rene Hopf
    @rene-dev
    The usb on the hv board is only for programming via bootloader, there is no usb support in the firmware.
    JanStry
    @JanStry

    Hi i'm having troubles with my stmbl & AC servo. the resolver works fine. when i'm using 24volt on HV board i can joy the motor. but the motor runs a bit jerky from time to time.. sometimes i get a saturation error. when connecting 320V to the stmbl the servo is more jerky and i get more saturation errors and position errors..somebody has a idea where to start solving this.. thanks

    conf: link res_fb0
    conf0.j = 0.0001
    conf0.l = 0.0001
    conf0.r = 1.1
    conf0.max_vel = 600
    conf0.max_ac_cur = 1
    conf0.max_force = 2.4
    conf0.polecount = 3

    JanStry
    @JanStry
    https://youtube.com/shorts/XbKYGhl0v3o
    issyvarsano
    @issyvarsano
    use sys_id branch for tuning , there is little readme explaing haw to
    JanStry
    @JanStry
    thanks @issyvarsano , i got the motor running pretty decent. good torque at all speeds.
    Sometimes my laptop built-in mouse starts to act weird when the stmbl is connected and servo running..when i disable the drive its back to normal. i guess this is not very safe....somebody experienced the same problem??
    andypugh
    @andypugh
    Is it a wireless mouse? I have a wireless mouse at work, and that gets weird if the office is unusually full. Nothing to do with servo drives, but shows that they are susceptible to interference.
    JanStry
    @JanStry
    built in macbook mousepad....usb internal
    Sync-
    @Sync-
    it's a grounding issue
    you get capacitive coupling of the motor voltages and then the touchpad acts up
    I have it sometimes too
    JanStry
    @JanStry
    oh ok.
    i would like to use my stmbl for spindle control in linux cnc. i guess SmartSerial is the best way but since i'm only using stmbl for the spindle on this machine(not the xyz) i would like to control it without mesa card. is it possible to control the drive with step/dir + serial/rs485 for errors and current monitoring?
    andypugh
    @andypugh
    Step/dir for speed control ought to be fairly easy. I am less sure about separating the coms feedback.
    JanStry
    @JanStry
    thank andy, i got step/dir working but its pretty noisy since i'm not using differential signals atm.(i will use a am26ls31cn in the future to send rs422 signals for step/dir)
    about the serial protocols. is there a working protocol on the feedback1 connector?
    issyvarsano
    @issyvarsano
    @JanStry use common mode filters at the motor connectors near the stmbl. It will reduce significant the noice
    JanStry
    @JanStry
    286007123_434861071434959_7374313573173750396_n.jpg
    hi i did some more testing. i build a small circuit with am26ls31 to send step/dir. this works pretty good. with my 24V powersupply everything works great. but with my 320V powersupply step/dir is still not working as it should. i tried sending step/dir pulses from a arduino and from time to time the arduino freezes reboots...and my laptop trackpad is acting up.. i have added a ferrite core on the motor leads close to the stmbl as @issyvarsano suggested. this does not make a noticeable difference in my case.. what is the best way to ground the drive? maybe the problem is my small 320V powersupply.. its pretty rudimental : 4diodes in bridge and a small 100uF(400V) cap.
    issyvarsano
    @issyvarsano
    @JanStry wrong ferite ...
    use Laird-Signal Integrity Products 28B1122-100 , make 2-3 turns
    JanStry
    @JanStry
    thanks you @issyvarsano , the ferrite i'm using at the moment is about 2mm shorter and 3mm thinner than the Laird-28B1122-100 you suggested. (not on the photo obvious) . it might be something else..maybe capacitive coupling of the motor voltages like @Sync- also experienced . any solutions for this? thanks
    long0900
    @long0900
    @tlorincz72 Hi, were you able to read all 22 bits of HG-KR servo motor's encoder
    although the manual say the encoder is 22 bit, my experiment and the hint from stmbl's wiki suggest that it only has 18 bit resolution
    tlorincz72
    @tlorincz72
    @long0900 Hi, I read as 17 bit encoder (with 2,5Mbit/s). Good enough for my projects..
    long0900
    @long0900
    I agree that 17-18 bit is plentiful but the encoder has up to 22 bit resolution, at least that's what the manual says. The more the better, right? ;)
    can you confirm your HG-KR motor is equiped with OBA24R encoder? Thanks!
    tlorincz72
    @tlorincz72
    @long0900 just sent 0x32, and encoder replies the 17bit pos data. I have the same OBA24R encoder on the motor (nearby the matrix code)
    Nico Stute
    @crinq
    afaik you have to send a different byte to get more data from the encoder
    tlorincz72
    @tlorincz72
    @crinq I don't modified the original stmbl firmware. Just works with HG-KR encoder.
    tlorincz72
    @tlorincz72
    @crinq Here is the HG-KR73 config:
    link pid
    link pmsm
    link encm_fb0
    link misc
    load enc_cmd
    enc_cmd0.rt_prio = 2
    enc_cmd0.res = conf0.cmd_res
    rev0.in = enc_cmd0.pos
    enc_cmd0.mode = 0
    conf0.r = 0.8
    conf0.l = 0.008
    conf0.j = 0.00013
    conf0.max_force = 4
    conf0.max_ac_cur = 5
    conf0.mot_fb_res = 131072
    conf0.cmd_res = 2048
    conf0.mot_fb_offset=0
    conf0.com_fb_offset=0
    conf0.mot_fb_rev = 1
    conf0.polecount = 5
    conf0.psi = 0.08
    fault0.cmd_error = 0
    io0.cmdg = 1
    long0900
    @long0900
    @tlorincz72 thank you
    long0900
    @long0900
    @crinq that's strange since the encoder reports 3-byte position, there's enough room to fit the LSBs in these bytes
    maybe I'll try to test all possible command bytes and observe the outcomes
    Nico Stute
    @crinq
    it sends single + multi turn data for the 0x32 request