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Printing issues ...
Maybe it could do overhangs. As drawn, its essentially a felt tip pen drawing plating solution onto the surface. You could run the edge of the tip around the work to print horizontally.
But, yes, very very slow, and the plating solutions are expensive. First hit I get quotes £12.75 for 250ml of copper - which, according to their calculator, gets you ~620mm^3 of plated copper. There are probably
by
Andrew Smith
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General
608 is unshielded, 608z is shielded on one side, 608zz is sheielded on both sides. Unshielded bearings will work until something gums them up, provided you keep them lubricated. Shielded bearings usually don't need lubrication and will last pretty much forever in a reprap.
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Andrew Smith
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General Mendel Topics
It sounds like you have supplied 5V to the 5A connector?
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Andrew Smith
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RAMPS Electronics
Depends which electronics you have. The botmill site doesn't specify this clearly but it may be Gen6. Check the reprap wiki for pictures. If you have this, you need to connect the thermistor to the rightmost pins of the bottom right molex.
The other option mentioned is RAMPS. In this case, the thermistor goes to the two pins marked 'T0', which should be below the pololu sockets.
If its neithe
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Andrew Smith
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General
You should get a resistor heater block. Much more robust solution. As for your nichrome, I don't think its meant to smoke, make sure its in firm contact with the heater barrel, any parts of it that are in air will get much hotter.
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Andrew Smith
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General
1) RAMPS 1.3 and up have a separeate power input and fuse to run the heated bed. Earlier versions are limited to 5A, enough for the machine but not a heated bed.
2) While the target temperatures are lower, the bed is much larger and loses heat more quickly. Not sure how much power you need. I did work this out once and built an uncontrolled heat bed that runs straight from the PSU, but I can't
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Andrew Smith
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General
You need to produce a simple, manifold, hull. No more than two faces can share the same line. No holes. No overlapping polygons.
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Andrew Smith
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General
It compiles, but CGAL complains about an illegal polygonal object. There seem to be a lot of extra triangles on the front and back faces, try getting rid of those.
EDIT]
Yup, that seems to work.
polyhedron
(points=[
[-7.5,0,-3],[-5,0,-3],[5,0,-3],[7.5,0,-3],[0,0,7],[1,0,10],[-1,0,10],
[-7.5,2,-3],[-5,2,-3],[5,2,-3],[7.5,2,-3],[0,2,7],[1,2,10],[-1,2,10]
],
triangles=[
[4,1,0],[0,6,4],[4,3,2]
by
Andrew Smith
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General
That's a warning for people who have set their rates to compensate for the bug that was slowing the machine down. These people, running the same Gcode as before, may damage the printer. Not that it should do any damage, steppers won't tear themselves apart if you ask them to go to fast, they just don't work.
There are max settings on line 90 of configuration.h, but your slicer shouldn't be gene
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Andrew Smith
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General
The point of running a motor below its rated current is to bring the operating temperature down. A stepper at full power runs hot enough to soften an ABS bracket.
If you are willing to produce a metal bracket, then you can take step and dir signals from RAMPS to any controller you like. In this case, it may be worth building a custom shield on top of the mega, a lot of the space on RAMPS is devo
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Andrew Smith
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Reprappers
Try swapping the center pair of wires. If that doesn't work, post the part number of the motors or a link to where you bought them.
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Andrew Smith
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General
I don't know if it will work, but it should be safe to try provided you don't install D1 on the RAMPS board - with that diode, the 19V will be supplied to the mega. The mega's voltage regulator is capable of handling up to 20V, but needs additional cooling above 12V. Be sure to turn the pots on the pololus down as far as possible without causing missed steps, and watch out for the supply overheat
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Andrew Smith
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Reprappers
You need to take the 12V rail to the 5A connectors on the RAMPS. If you use a heated bed, you need to take a separate pair of wires to the 11A connector as well. Black is ground, yellow is 12V. Leave the power jack on the Mega empty. Normally, you'd supply 12V there, but RAMPS provides power to the Mega.
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Andrew Smith
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General
Nigel_NZ Wrote:
>
> I didn't realise the board I have (the top one)
> needs to connect to the lower board. I don't have
> the lower board.. what is it and where can I get
> it?
>
Its an Arduino Mega and you should be able to find a supplier fairly easily.
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Andrew Smith
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Reprappers
At a guess - he's talking about the reprap wiki and the Gen6 user manual.
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Andrew Smith
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Reprappers
The software sends gcode in ascii using a virtual com port. You should be able to read it with the serial class.
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Andrew Smith
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Reprappers
You probably don't have the right version. Marlin was originally for gen6 only and has since been ported to other electronics.
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Andrew Smith
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General
You'll probably find that the filament buckles between the drive and the heater.
by
Andrew Smith
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General
Looks right to me, except for the polarity.
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Andrew Smith
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Reprappers
Gen6 is a single board, RAMPS is a shield on top of a mega/mega 2560. Upload pics if unsure.
So far as I know, there's no practical way to download the firmware from the board. Google may turn up some hack to do it, but I believe it needs to be a function built into the firmware to be copied.
Sprinter includes a preset config for RAMPS 1.3 which should work with 1.4,as well as one for Gen6 so
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Andrew Smith
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Reprappers
Try installing the virtual com port driver from here:
That should create a com port for the software to use to connect to the printer. Then, fire up the arduino environment, select that com port, start the serial talker an tweak the baud rate till you see the word 'start'. Send the command 'M105', if it returns the current temperatures, you should be good to go.
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Andrew Smith
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Reprappers
I have a very similar caliper, from mendel parts. Its branded Hogetex, the inch/mm button is slightly further left, it has a different looking scale, otherwise its identical.
From the instruction sheet:
3. With data output interface (optional), data can be input to a special printer or a computer via special cable for data processing and printing.
Interface Typeynchronous serial.
Data:Binary c
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Andrew Smith
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General
Firmware runs on the chip and couldn't care less what your OS is. So long as the driver software you are using can talk to the firmware, it'll work.
Does anyone have a list of advantages of Sprinter over teacup? Aside from SDcard support, is there any reason to switch?
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Andrew Smith
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General
Start looking at 400W supplies - but ignore the wattage beyond that. That number is often made up, and anyway, it includes the 3.3/5V rail as well as the 12V we are interested in. Look for 16A on the 12V rail and be wary of multi-rail designs since they may not provide enough power on a single rail.
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Andrew Smith
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Reprappers
If your bank says the money went through, then you'll get your likely parts eventually. Stress on the 'eventually'. If you want reassurance, then you're probably best off phoning them - they aren't paying any attention to the forum they set up to handle these things. Don'
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Andrew Smith
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General
Gen6 will drive everything on a standard reprap except the heated bed. If you intend to go beyond that then you might want to look at RAMPS, which is a single shield on an Arduino Mega which can drive everything Gen6 can drive, plus a heated bed and I think a second extruder on the more recent versions, and still has plenty of IO pins left for further expansion. If you just want it to work out of
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Andrew Smith
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Reprappers
This was a problem with batch1 of Gen6, a fix is detailed here:
In short, the squeal happens because the PWM frequency is in the audible range, you can fix it by swapping R36..R43 with 68K resistors.
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Andrew Smith
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Reprappers
They have a server problem and can't receive or send emails. Theres a phone number on the site. They also have a history of getting backlogged and going silent, concentrating on shipping orders and developing Orca rather than talking to customers. Camiel did blog about how this was a problem, I don't know if they ever improved.
So far as I've seen, they always come through in the end so if you
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Andrew Smith
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General
Or you could use a powered USB hub, which should be able to power the Mega.
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Andrew Smith
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RAMPS Electronics