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For what it's worth, I got lazy (no parts in stock) and completed my build with the included connector (supposedly 16a). Well, 10 hours of use later, one melted pin and an intermittent connection (no board damage - caught it in time). No way I was over 10a on the pin, much less 16a . . . A close examination of the failed part revealed a distinct lack or markings for any certification standards or
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tadawson
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Safety & Best Practices
I could never get the 64 bit build to work at all for me. 1.2.7 from GIT, no probs, older stuff, no probs, but if I wanted to run 1.2.6, I had to use the 32 bit build, or it was nothing but a crashmatic.
- Tim
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tadawson
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Slic3r
FYI, those files *are* part of current Marlin, but did not exist in older versions.
- Tim
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tadawson
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Controllers
That will do about 75 watts at 12 volts . . . what problem are you having?
- Tim
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tadawson
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General
The third wire is a tachometer signal coming back from the fan, used by motherboards to sense speed, so they can hit a given airflow. Motor is only on red/black, and all speed control is done on those same leads.
- Tim
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tadawson
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General
Well, not to the motor, anyhow. Spinning a stepper *will* generate voltages and send them back upstream into the drivers (I have some gear where you can actually see the power supply LEDs iluminate if you do so). Thus, I recommend making any human driven stepper moves as slowly as possible, lest the back EMF damage something in the circuitry.
- Tim
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tadawson
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General
The only thing I see which makes me wonder, is that if it truly were a hardware issue, then why does it stop overheating when the job is terminated? Heater off is heater off to the hardware . . . why is one working and not the other? Unless we can verify your posted traces with actual MOSFET gate voltages that match, I would not take the traces as 100% accurate . . .
- Tim
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tadawson
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RAMPS Electronics
Meter from the gate lead to ground . . . if that varies, and the output does not == dead MOSFET . . .
Onthe schematic/board, the gate is the only one of the three with no connection to the load or power.
- Tim
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tadawson
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General
Answered my own question! As per the datasheet, this is just a reference voltage derived soley from the 5v logic supply, so simply plugging in to USB and nothing else should be fine, and a lot easier to avoid proble slips than up the bottom of an overturned printer!
- Tim
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tadawson
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RAMPS Electronics
QuoteRalphy
. . . this guy talks about downloading the latest firmware but doesnt mention where he got it. . . .
Uh, the Marlin download page, since it is public domain software? Most should be able to find it with a search in single digit seconds, max. Folger does not change thr code at all - they just provide a Configuration.h file that has a lot of setting already madr in it . . . nothing a
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tadawson
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Printing
Do the Polulo boards require the steppers to be plugged in the make the adjustment via the on-card pot? It would certainly be easier to power up thenArduino/RAMPS prior to physical install/wiring in the printer to do the initial adjustments . . . .
Thanks . . .
- Tim
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tadawson
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RAMPS Electronics
But note that the UL rating is for the supply only. This is why so many low end products use wall warts - you don't need to certify the core product if the 120v power supply is external, you just buy an approved supply.
- Tim
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tadawson
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Reprappers
Those are exactly what I was recommending, and considering that there are two working in parallel, can already take 16 amps. Removal of the slip connection removes the point of failuren- the next most likely failure point will be the PCB itself, and a connector won't fix that, so I think you are fine.
Most of the plugin failures I have seen are in applications at far less than 8 amps . . .
- Ti
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tadawson
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Safety & Best Practices
Exactly! The three wire cord on a laptop protects the high voltage stuff - typically the external power supply blob, and has nothing to do with the DC side of the supply. Switcher or linear supply, they are all isolated from the AC line, and all tying DC negative to line ground would accomplish would be to transfer more noise.
AC/powerline ground is for fault protection, period . . .
- Tim
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tadawson
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Reprappers
I honestly don't understand what pins you are pushing on, but do know that if you have that tenuous a connection, more heating, burning, and board damage is in your very near future. Myself, I would upgrade to screw down strips (same style as the heater outputs) in the appropriate size, or at the very least, replace the entire connector pair - once a contact overheats that bad, it loses it's spri
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tadawson
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Safety & Best Practices
It's rated for a max of 250 volts and 8 amps, and will *physically* accept 22awg through 14awg wire.
The wire size rating has nothing to do with current rating - just the physical size of the terminals.
Generally, in higher current applications, I hate these damn things . . . I have some automated lighting gear that uses them, and they arethe biggest sore spot in the product, failing/burning/da
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tadawson
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Safety & Best Practices
I think MINTEMP defaults to 5, so this would tend to make me think you have a problem with your hot end thermistor, or the value was errantly set to something else.
- Tim
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tadawson
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Delta Machines
What voltage is the heater getting? Perhaps the wrong FETs on the RAMPS card not turning on all the way?
- Tim
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tadawson
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General
Eh, looks good, but don't want to wait. I have a good hardware store and Fastenal close, so I'll eat the few bucks and buy locally. I was going to go with M3x10, unless they bind in the track, since there is almost no wiggle room that I can see with the 8mm hardware.
- Tim
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tadawson
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Delta Machines
I kinda gathered that, but Folger shipped *ZERO* M3x10 hardware with my kit. . . .and the 8mm have almost no extra length in the T nuts.
- Tim
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tadawson
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Delta Machines
I have the same issue . . . the label on the hardware bag says there should be 90 M3x10, and I got 0 . . . in M3x8, I got 36, and in M3x12, I got 12. The M3x12 are too long for the motors, so that's out, and reading to current manual variant, I quit counting at about 80 M3x8 required, so this is a 'no joy' situation, so it's off to the hardware store for a box of 100 M3x10, and should be good to
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tadawson
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Delta Machines
FYI, my kit arrived today as shown by UPS. Total time from order to in my hands was 18 days.
I decided to test my electronics first, since I had noted some folks having a problem getting the Smart Graphic Controller to come on this kit. I simply uncommented the line for SD Support, commented the line for the Smart Controller, and uncommented the line for the Graphic Smart Controller, include
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tadawson
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Delta Machines
Typical color codes are black - line, white - neutral and green - ground (in the US at least) and brown - line, blue - neutral, green - ground internationally. I can't say that I have ever seen purple - any chance it's just a funky brown? In any case, multi voltage power supplies these days are not terribly picky about line/neutral reversal, since they will be getting two hot legs (at least in t
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tadawson
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General
Got the shipping figure for the effector and other stuff, as expected. No delay, just need to make payment . . . FYI . . .
- Tim
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tadawson
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Delta Machines
No, what the message said today when I got it (went to order aswell), is that they would e-mail shipping costs to finalize, which would tend to indicate no issue with availability. A number of Chinese companies do this - they are in no way unique in that regard . . .
My issue is that due to all the, attas, and other bs coming from China, getting mail is hard - I have had to firewallpretty much t
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tadawson
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Delta Machines
No apology needed! I got through it, and it got me into the code as well, which is good. I was just not certain of what has and has not been tried, so sending in my observations in case it saves some time or grief. To that end, I had one more thing I needed to correct, which was commented to lead meto believe that is was a change from the Due port . . . . the function 'tone', as referenced by, ii
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tadawson
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Firmware - experimental, borrowed, and future
Last update - config is in, builds cleanly . . . Now I justs need to get hardware since I know it builds, and test for real . . . Hopefully, I'll have the Due tomorrow, and need to order the RAMPS-FD . . .
Looks good so far, though . . . Hopeful for use on my Kossel . . .
- TIm
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tadawson
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Firmware - experimental, borrowed, and future
Looks like I may be good to go! I pulled example_configurations from the current mainstream GIT, and got the 1.3 dev delta configs. The only thing that was unreferenced in the Marlin4due port was "MEDIAN_COUNT" in Configuration_adv.h, which I added, and now have a delta config that compiles cleanly!
Next, to try to put my config in and see if it still compiles! But at least I have a good st
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tadawson
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Firmware - experimental, borrowed, and future
OK, got that worked through . . . the example*/deltas/Configuration*.h files are definitly not for this version, or viable as they sit, despite the relatively recent update as per git. The above problem was corrected by correcting the omission of "Conditionals.h" from "Configuration_adv.h". The next issue is a missing definition of a z axis offset, that is normally set with auto bed levelling, an
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tadawson
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Firmware - experimental, borrowed, and future