Duet3D Logo Duet3D
    • Tags
    • Documentation
    • Order
    • Register
    • Login
    1. Home
    2. CMP
    3. Topics
    • Profile
    • Following 0
    • Followers 0
    • Topics 4
    • Posts 19
    • Best 0
    • Controversial 0
    • Groups 0

    Topics created by CMP

    • CMPundefined

      RRF 3.5beta2/closed-loop encoder config-problems

      Duet Hardware and wiring
      • • • CMP
      7
      0
      Votes
      7
      Posts
      381
      Views

      dc42undefined

      @jjem said in RRF 3.5beta2/closed-loop encoder config-problems:

      Is there scope for doing linear encoding (with the Renishaw LM10, for example) without also having the magnetic shaft encoder?

      No. We need the magnetic encoder so that we can set the coil currents the desired angle ahead or behind the current step phase position to reasonable accuracy. In effect we are treating the stepper motor like a BLDC motor with a very high number of poles. BLDC motors that can operate over a wide range of speeds in either direction have built-in sensors for commutation.

      OTOH it may in future be possible to run the stepper motor in open loop mode and use the linear encoder to monitor deviation between commanded and actual position.

      Our magnetic encoder board takes up about 15mm of depth on the back of the stepper motor, including the connector.

    • CMPundefined

      Solved Duet 3 Expansion 1HCL CAD-File

      Documentation
      • • • CMP
      3
      0
      Votes
      3
      Posts
      217
      Views

      CMPundefined

      @t3p3tony thanks for the quick response/help!

    • CMPundefined

      different milling results dispite same G10 Offset

      General Discussion
      • • • CMP
      12
      0
      Votes
      12
      Posts
      649
      Views

      CMPundefined

      Since I manually cool my hotend and swap it with the milling tool, I only have a post.g for tool 4:

      tpost4.g
      ; called after tool 4 has been selected
      M280 P7 S40 ;start ESC
      G4 P2000
      M280 P7 S1150 ;Start Motor with 10% speed
      G4 P1000
      M280 P7 S2000 ; 100% Motorspeed

      I didn't have time to the test yet, but updating the firmware to 3.3 hasn't changed anything.

    • CMPundefined

      Update to RRF3 -> password doesn't work anymore

      Duet Web Control
      • • • CMP
      16
      0
      Votes
      16
      Posts
      569
      Views

      CMPundefined

      Thank you for the Information.
      I'll try it in standalone mode, the next time I get the chance.