Where communities thrive


  • Join over 1.5M+ people
  • Join over 100K+ communities
  • Free without limits
  • Create your own community
People
Repo info
Activity
    issyvarsano
    @issyvarsano
    abd be aware that with abs. encoder in case of long cables you can have interference and packet loss
    Marius Alksnys
    @propcoder:matrix.org
    [m]
    They where working with other servo drives
    Docs show (while I am not sure) that these are data and clock pairs
    Maybe this pic explains that I need to connect those pairs in parallel. I think battery is connected to yet another wire, not available at the drive connector
    issyvarsano
    @issyvarsano
    yes
    you need sd+ , SD- +5V and gnd
    Marius Alksnys
    @propcoder:matrix.org
    [m]
    So, leave clock unconnected?
    issyvarsano
    @issyvarsano
    there is no clock on the tamagawa protocol
    Marius Alksnys
    @propcoder:matrix.org
    [m]
    Ok, I will try
    issyvarsano
    @issyvarsano
    the speed is fixed to 2,5 mb/s
    Marius Alksnys
    @propcoder:matrix.org
    [m]
    Thank you, @issyvarsano it works!

    I noticed a difference in two docs:
    Nm/A
    psi = (Nm/A) / 3.0 * 2.0 / #POLE_PAIRS

    Nm/A
    psi = (Nm/A) / 2.0 * 3.0 / #POLE_PAIRS

    And it would be better to use brackets

    Getting started and motor parameters
    Marius Alksnys
    @propcoder:matrix.org
    [m]
    Wrong scales?
    Marius Alksnys
    @propcoder:matrix.org
    [m]
    com_test with 23bit smartabs encoder
    Marius Alksnys
    @propcoder:matrix.org
    [m]
    I modified smartabs.c and now it looks ok. It seems that it was coded for 17bit abs. encoders
    issyvarsano
    @issyvarsano
    @propcoder:matrix.org yes , it is coded for 17 bit
    Marius Alksnys
    @propcoder:matrix.org
    [m]
    Do you know which formula is correct?
    issyvarsano
    @issyvarsano
    psi = (Nm/A) / 3.0 * 2.0 / #POLE_PAIRS
    Marius Alksnys
    @propcoder:matrix.org
    [m]
    How to find a Qt based UI tool for stmbl?
    issyvarsano
    @issyvarsano
    bobkermann
    @bobkermann
    Hello, I would like to make these controllers for a simulator project with servomotors. I have already made my own PCBs so I already know the basics of kicad and soldering but do you have updated Bom or PCBs already populated?
    boerderpatrol
    @boerderpatrol
    I would recommend using cheap Chinese servos for a completely new design. Right now many of these parts are difficult to find and the complexity of the stmbl is really only warranted in retrofit projects, with a preexisting machine you want to get running.
    I have the 750 watt version of these. They are plug and play. Rs-485 and step direction. $650 a piece sounds like a lot for a diy project but you will spend a lot more time sourcing stmbl parts, finding a suitable motor, waiting on assembly or performing the extremely difficult task of assembling on your own.
    bobkermann
    @bobkermann
    interesting, but in fact my project starts from an existing simulator from "ECA FAROS" so I already have all the mechanics and servomotors perfectly adapted. I just need the drivers. so it's a retrofit in some way. I haven't started yet but I'm exploring all the possibilities.
    boerderpatrol
    @boerderpatrol
    Cooooooool
    Then maybe suitable.
    Is it a slight simulator or driving?
    Flight*
    bobkermann
    @bobkermann
    It's a truck drinving simulator. but the mobile platform is so huge that I'm thinking of redesigning things on it.
    I was thinking of buying the pcb's from pcbway or other Chinese manufacturer with the stencils. the IRAM256 are still available from rochester. i wanted to know if anyone has ever made an updated BOM. there is BOM on this thread from 2017.
    Seppo Pietarinen
    @spietari
    @bobkermann how does the simulator connect to the servo drives?
    bobkermann
    @bobkermann
    Originally the simulators was composed of the mobile platform and a a separate electrical cabinet containing the computers and motors drivers. I don't have the cabinet so I have to reconnect to the original motors (NX 430 from PARVEX) for the software there are some software to extract the data from public games and to control in step-dir motors.
    Seppo Pietarinen
    @spietari
    Very similar to what I've been doing but with flight sims
    boerderpatrol
    @boerderpatrol
    I have 12 drives I would like to sell, I’m gonna swap the motors on my robot, it’s a more straightforward approach. So I have 12 drives, 10 or so blank boards, 6 irams with right pins and 6 with straight pins and a grab bag of smt parts, I also have a Mesa 7i80 db and a 7i74. Asking $3500 for all of it.
    I’ll be posting it on eBay for that price in the next day or two.
    boerderpatrol
    @boerderpatrol
    I’ll post it on eBay in the next day or two.
    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?