Posts made by KalTol1994

To clarify, I only used the X axis motor, I know it works and is wired up to a 4 pin connector. I hadn't yet wired the Y-axis to a connector so I used the X-axis motor. The motors are not the issue, this much I know.

@dc42:

I guess another possibility is that another component attached to the TMC driver is burned out, such as one of the current sense resistors. But I expect you would have noticed that.

Is it possible it's burnt but not visually noticeable? Would that cause the driver to self destruct?

I tested the board by

1. powered on the board to test X and Z axis motors (Y axis is the driver in question)

2. Verified X and Z functioned.

3. Cut power to the Power Supply, waited until all lights were off.

4. Hooked the X axis motor to the Y axis, due to the first driver being killed via shorting a wire I placed the wires in connectors to eliminate shorting. Also visually checked the wires were not going to short.

5. Clicked "Move right 1 mm"

6. Experienced the scent of burning silicon and dying a little inside.

Just in case, how could I map the Y axis to an extruder driver?

After dealing with a loose wire burning my original Y-axis driver, I ordered a new one from Digi-Key and soldered it back on to the board. the soldering was fine, but as soon as I clicked "move" it fried. What could cause this? Both drivers are TMC2660-PA. The Original drivers are TMC2660-PA followed by "1612 07005" while my burnt Y-axis is a TMC2660-PA "–-6 06814" (The three missing digits are burnt) I couldn't find anything other than a TMC2660-PA driver, no variants leading me to believe it's some sort of date or batch code. But I also hope I bought a driver designed for 5 or 12 volts as opposed to 24V-30V like the standard Duet Wifi drivers.

Thanks in advance!

Burnt Driver Part 1: https://www.duet3d.com/forum/thread.php?id=392

Not as glad as I am!

I removed the burnt Y-axis driver, your assumption was correct, the other axes moved upon command looks like I'm only out $7!

So I'm only out a single IC? From what I've seen they're about $7 USD a piece. I have access to micro soldering equipment on campus, If I decide I don't feel comfortable doing it, I have friends who do work on micro satellites/Cubesats. I would really like your opinion and advice more than anything. So If you tell me just to replace a single driver that's what I'll do. Thanks for your input!

Just tested the board again, no movement on any axis whatsoever. I can, however trick the board into thinking the axes are homed by pressing the switches. I'm reading 24.11V across the Vin terminal. Accourding to the M122 command it's reading 24.6V. I am in the U.S. should I just search by username?

Memory usage:
Program static ram used: 13132
Dynamic ram used: 82180
Recycled dynamic ram: 2992
Current stack ram used: 2768
Maximum stack ram used: 3868
Never used ram: 28900
Last reset 00:06:37 ago, cause: power up
Error status: 1
Bed probe heights: 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Free file entries: 10
SD card 0 detected, interface speed: 20.0MBytes/sec
SD card longest block write time: 0.0ms
MCU temperature: min 38.8, current 40.5, max 44.4
Supply voltage: min 24.5, current 24.6, max 24.8, under voltage events: 0, over voltage events: 0
Slowest main loop (seconds): 0.013702; fastest: 0.000031
Move Diagnostics:
MaxReps: 0, StepErrors: 0. Underruns: 0
Heat Diagnostics:
Bed heater = 0, chamber heater = -1
Heater 1 is on, I-accum = 0.0
GCodes Diagnostics:
Move available? no
Stack pointer: 0 of 5
macro is idle
http is ready with "M122"
telnet is idle
serial is idle
aux is idle
file is idle
Network Diagnostics:
WiFiServer is running
SPI underruns 0, overruns 0
Webserver Diagnostics:
HTTP sessions: 1 of 8

While running some tests with my Duet Wifi A jumper cable on the Y-Axis motor came loose and caused a short. I can tell the Y motor Driver is bad, after disconnecting everything for the night and coming back today I can't move the Z or X axis motors. No motion what so ever. Is there an SMD fuse I need to replace as well? Please tell me I'm not out another $150.

Thanks in advance!

I've got my board scanning and scanning and I can't even find an open network. let alone one with a simple password.

In the future I would like to modify the firmware to act as both a laser burner and 3D printer while only swapping the printer head. Has this already been reduced to a simple fix or will I have to brush up on my coding skills?

The bushings are the bulk of my concern the X and Y axis are geared down so they shouldn't have trouble. Could anyone tell me if the on-board drivers have thermal and/or overcurrent protection? Thank you all for your help this is going to make my project a breeze!

How can I get more info on the external steppers drivers? I saw one on the options when you go to buy a board but I haven't seen any info on it.

I'm working on an old decommissioned Stratasys Dimension, I've gutted the entire thing. The Power supply is rated for 24V @ 21A. My main concern being the NEMA 23's current consumption compared to the driver output of the Duet board. Is there some sort of amplifier I can use to increase the power I can use without burning up the duet board?
I've yet to buy one but as soon as I find out I can safely use these motors at or near full power it's a safe bet I will. I've been getting a lot of information from the good people posting on the thread I created on another forum ( http://forums.reprap.org/read.php?1,703331,704783#msg-704783 ) but the people here would know more about the Duet board and its limitations obviously.

More info on the NEMA 23's;
POWERMAX II
Model: M21NRFA-LNN-NS-04
2.8A bipolar series ( fairly certain it has a 6A peak)
Made by: Pacific Scientific

The person who informed me of the Duet board said the following about the current draw;
"A Duet WiFi should be able to drive those motors adequately. We're limiting the current in firmware to 2A peak per phase at present, but that's 71% of the rated motor current and it's quite common to run 3D printer stepper motors down to 50% of rated current. We plan to increase the current limit to around 2.4A in future firmware. The driver chips themselves are rated at 2.8A if you take the correct precautions in firmware.
The phase inductance of those motors is only 2.8mH according to the datasheet, so 24V should be sufficient voltage to the drivers."

But my Z-axis will probably need full power while turning the three ball screws via a single belt. I mostly say this because of the bushings I made for it are a tad bit of a tight fit I do need to ream out the center hole that holds the ball screw just a hair. But even afterwards I feel with the weight of the bed and everything I'll need more power than what can be produced straight from the Duet board.

Thanks in advance!

P.S. I've been reading up on the board but please tell me everything you wish you had known about yours.