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    Topics created by mcole

    • mcoleundefined

      One Extruder Motor for two filaments

      Duet Hardware and wiring
      • • • mcole
      4
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      mcoleundefined

      @sebkritikel said in One Extruder Motor for two filaments:

      Which Stratasys model? 1200, 768, uprint, etc? I have a 1200es BST I've been mulling over retrofiting using the info below.

      It's a Fortus 250MC, about 9 years old. It's been a workhorse for us and produced prints almost every day for all that time, so it certainly doesn't owe anyone anything, but the motion system is so nice I want it to live again.

      @sebkritikel said in One Extruder Motor for two filaments:

      Check out these posts by @Archeantus , they were able to do a fully reversible retrofit on a uprint, using the original tool head parts, steppers, etc, bypassing the original Stratasys electornics boards.

      I've been searching through here (before posting, as I'm sure I'm not the first person to try this), but I think it's our PDB that has blown. Hard to be sure as there is a lot going on in there. The 5V PSU wasn't working, so I replaced that, but not sure if it was a symptom or the problem, as now the SBC in there continually beeps.

      @deckingman said in One Extruder Motor for two filaments:

      Well changing the motor direction is certainly doable. It's the "S" parameter in M569. So you could use M569 Pn S0 in one tool change macro (say tpost0.g), and M569 Pn S1 in the other tool change macro (say tpost1.g).

      Rebuilding the head at the moment to take Revo hot ends, but will try that - thank you.

    • mcoleundefined

      Print Frozen - Heaters On - RRF3.01-RC11 and DSF 2.1.3

      Beta Firmware
      • • • mcole
      3
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      3
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      Phaedruxundefined

      Please update the firmware and DSF. There were some fixes in RC12.

    • mcoleundefined

      Can't upload G-code

      General Discussion
      • • • mcole
      4
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      4
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      635
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      mcoleundefined

      M122 output

      === Diagnostics ===
      RepRapFirmware for Duet 2 WiFi/Ethernet version 2.01(RTOS) running on Duet WiFi 1.02 or later
      Board ID: 08DGM-9568A-F23SD-6J1F2-3SD6R-KVNMD
      Used output buffers: 3 of 20 (11 max)
      === RTOS ===
      Static ram: 28476
      Dynamic ram: 96312 of which 16 recycled
      Exception stack ram used: 320
      Never used ram: 5948
      Tasks: NETWORK(ready,400) HEAT(blocked,1248) MAIN(running,3540)
      Owned mutexes: WiFi(NETWORK)
      === Platform ===
      Last reset 00:15:43 ago, cause: power up
      Last software reset at 2018-09-10 16:36, reason: User, spinning module GCodes, available RAM 5948 bytes (slot 1)
      Software reset code 0x0003 HFSR 0x00000000 CFSR 0x00000000 ICSR 0x0441f000 BFAR 0xe000ed38 SP 0xffffffff Task 0x4e49414d
      Error status: 0
      Free file entries: 10
      SD card 0 detected, interface speed: 20.0MBytes/sec
      SD card longest block write time: 0.0ms, max retries 0
      MCU temperature: min 22.1, current 33.5, max 34.3
      Supply voltage: min 12.2, current 12.3, max 12.5, under voltage events: 0, over voltage events: 0
      Driver 0: standstill, SG min/max not available
      Driver 1: standstill, SG min/max not available
      Driver 2: standstill, SG min/max not available
      Driver 3: standstill, SG min/max not available
      Driver 4: standstill, SG min/max not available
      Date/time: 2018-09-11 09:42:02
      Slowest loop: 8.32ms; fastest: 0.07ms
      === Move ===
      Hiccups: 0, StepErrors: 0, LaErrors: 0, FreeDm: 240, MinFreeDm: 240, MaxWait: 0ms, Underruns: 0, 0
      Scheduled moves: 0, completed moves: 0
      Bed compensation in use: none
      Bed probe heights: 0.000 0.000 0.000 0.000 0.000
      === Heat ===
      Bed heaters = 0 -1 -1 -1, chamberHeaters = -1 -1
      === GCodes ===
      Segments left: 0
      Stack records: 1 allocated, 0 in use
      Movement lock held by null
      http is idle in state(s) 0
      telnet is idle in state(s) 0
      file is idle in state(s) 0
      serial is idle in state(s) 0
      aux is idle in state(s) 0
      daemon is idle in state(s) 0
      queue is idle in state(s) 0
      autopause is idle in state(s) 0
      Code queue is empty.
      === Network ===
      Slowest loop: 37.13ms; fastest: 0.01ms
      Responder states: HTTP(0) HTTP(0) HTTP(0) HTTP(0) FTP(0) Telnet(0) Telnet(0)
      HTTP sessions: 1 of 8

      WiFi -
      Network state is running
      WiFi module is connected to access point
      Failed messages: pending 0, notready 0, noresp 0
      WiFi firmware version 1.21
      WiFi MAC address 2c:3a:e8:0b:27:ec
      WiFi Vcc 3.47, reset reason Turned on by main processor
      WiFi flash size 4194304, free heap 14304
      WiFi IP address 172.16.28.198
      WiFi signal strength -73dBm, reconnections 0, sleep mode modem
      Socket states: 0 0 0 0 0 0 0 0
      === Expansion ===

      I'll try another card too

    • mcoleundefined

      Controlling RC Servos with the expansion board

      Duet Hardware and wiring
      • • • mcole
      16
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      mcoleundefined

      @T3P3Tony:

      I have corrected the wiki page, really sorry that slipped through. you must be the first person to read the documentation!

      I need all the help I can get! I'm a ME, not an EE.

      Thank you though, I'm constantly impressed by how good a job you and DC do with keeping us all happy.

    • mcoleundefined

      Maximum Stepper Speed

      General Discussion
      • • • mcole
      7
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      JRDMundefined

      Lin Engineering also has torque/RPM curves at given voltages and the graph lets you estimate torque at a given RPM. The biggest lesson seemed to be to use parallel wound motors, which I think is where the maxim to use "low inductance" motors comes from, in a roundabout way. The graphs also show that higher voltage (within reason) is better than lower for getting a broader torque curve and faster RPM. This is why 24V is preferred for better, higher performance 3d printers.

      At one time I wanted to make a dynamometer to help chart these things for different stepper motors, but I had other goals, and even 3dp machine designers don't seem to care much.