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General discussions. For specific printers / electronics / fabrication methods / softwares, please see other sections.
Re: motherboard v1.2 - Capacitor call-out discrepancy - 16 years ago
These are decoupling capacitors for the oscillator, you can use anything below 33pF down to 10pf. 15pF may have been the first choice, with what he had at hand, but 22pf is more common to use to decouple the oscillatorby Grogyan - Controllers
Re: New RepRap to slowly be built from Objet parts. - 16 years ago
It will look great when its all done I'm wondering how a Mendel would look with parts made from that Objet machineby Grogyan - Reprappers
Re: Trying to get every thing to work - 16 years ago
Warning, if you cannot program through ICSP then you probably have a faulty processor, like I found where the Tx line of the processor was tied high by an internal 100 Ohm shortby Grogyan - RepRap Host
Re: the cut-out in the thick sheet for Mendel? - 16 years ago
The notch in the table is for nozzle cleaningby Grogyan - Mechanics
Re: Anyone know a UK supplier of PLA? - 16 years ago
I believe Adrian is the local supplier of PLA in the UKby Grogyan - General
Re: Errors in Mendel STL files - 16 years ago
Blender is harder to learn, but for me it feels more natural than any other program, even against the pro packages like 3D Max and Maya. I got into Blender because it was the only program for which a complex plugin called PyPrp which essentially allows you to design a world with puzzles for the game Uru from Cyanworlds. Blender took me around 6 months of tutorials, a couple of hours a day 2 - 3by Grogyan - Reprappers
Re: Where can you get PLA? - 16 years ago
Vik Olliver in New Zealand appears to be the local supplier here. I believe Adrian is a local supplier in the UKby Grogyan - Plastic Extruder Working Group
Re: Errors in Mendel STL files - 16 years ago
Bed Spring fixed. I had to remake the mesh because of the irregularities in the mesh, plus I fixed the small errors that Blender makes with CSG modelling (non manifested vertices). This version is now correct with the same dimensions, with no > 45 degree overhangs Let me know of any other problems AoI in my opinion is not being improved, or if it is, its being improved at an unbelievably sby Grogyan - Reprappers
Re: Errors in Mendel STL files - 16 years ago
Here is the Y bearing, though the bed-spring will take some work to fix. The y bearing had missing faces. The bed spring is intact as a complete mesh, but it will not be printable due to the fact that it has unprintable overhangs > 45 degrees, so i'll fix that later this arvoby Grogyan - Reprappers
Re: Errors in Mendel STL files - 16 years ago
I've fixed them, and skeinforge reports no errors back for me.by Grogyan - Reprappers
Re: Errors in Mendel STL files - 16 years ago
Yep, found the problem, the problem is that there are missing faces so it can't work out how solid it is I'll fix themby Grogyan - Reprappers
Re: Errors in Mendel STL files - 16 years ago
I'll look at those files tonight with blender as I can check the normals and missing faces easilyby Grogyan - Reprappers
Re: Errors in Mendel STL files - 16 years ago
What I forgot to say is that when doing CSG boolean operations in Blender, it creates problems in which direction the normals go. I've also had this error with correct normals but, some new edges created overhang, again Blender has problems with CSG, and I think they are bugs that have been fixed for Blender 2.5by Grogyan - Reprappers
Re: Mendel Ball Chain - 16 years ago
There is one small problem which is easily fixed, that being the Y axis belt comes really close but not touching one of the cross beams, using ball chain would gradually weaken the chain over time, as well as causing some unwanted noise. The workaround is just drill another hole, or print the part with the hole for the idler bearing shifted down a bit Y-idler-bracket-1off I can't see to muchby Grogyan - Mechanics
Re: Errors in Mendel STL files - 16 years ago
I'm not sure which programs you have, but I know that this error comes up after modelling with Blender, when you do CSG boolean operationby Grogyan - Reprappers
Re: Python error message "IndentationError: unindent does not match any outer indentation level" - 16 years ago
In Notepad++ it shows you each tab level, and the tab stops are like 4 white spaces, but don't use the space bar, just use the tab keyby Grogyan - RepRap Host
Re: Reprap host software on Windows Vista 64 bit - 16 years ago
might be an idea to have this stickied as Win 7 gets officially tomorrowby Grogyan - RepRap Host
Re: Reprap printing in multicolor... - 16 years ago
A roatatable disk with a hole in it, oher than the hole for the assembly, so as you turn the disk the hole moves to the next colour. Only downside is the wastage of plastic to get a string colour of your choiceby Grogyan - General
Re: Python error message "IndentationError: unindent does not match any outer indentation level" - 16 years ago
QuoteBingDai Wrote: > I know that Python is extremely strict with > identation (a misuse of tab/space occurs the > indentation error), so I suspect that, when I > copy&paste the cam.py source code from a website > into Python, I also pasted some unecessary > tab/space that confuses Python. You never copy and paste Pyhon Code from a website unless it has been copied from aby Grogyan - RepRap Host
Re: (RJ11 vs RJ45) or Telephone cables verses Ethernet 100 base T - 16 years ago
Its important to remember that there are outside EMI that may affect devices that require a strong signal to pass through. Regular telephone cable doesn't have this, instead they rely on twisted pairs to reduce EMI. RJ45 or ethernet cables have an EMC shield that wraps around the whole length as well as having twisted pairs, but unlike straight twisted pairs it doesn't require an equal and oppoby Grogyan - Controllers
Re: I need STL files for the Darwin Z Pulleys - 16 years ago
Well its pretty darn goon, i've watched and listened to the drives in both Mendelssohn and Darwin that Vik Olliver has shown around here in NZ, plus there are some videos around. I'm using ball chain on my 3D printer in progress and its smooth as. eg Vik has produced two versions, one that goes onto Darwins Z axis and one that clamps directly onto the shaft of a NEMA 17 motorby Grogyan - Mechanics
Re: I need STL files for the Darwin Z Pulleys - 16 years ago
Vik designed printable ball chain pulleys, they're on Thingiverse I thinkby Grogyan - Mechanics
Re: MakerBot V3.0 Stepper Controller - 16 years ago
Not true, i've observed Mendel(ssohn) operating with said drivers, and it was running just fine, with less than 1/3 the footprint of the MakerBot boards. I hope that Vik will have his going fully at the next Arduino Group next month, to see if he is still using these boardsby Grogyan - Controllers
Re: Easy way to print 2D scale views of parts? - 16 years ago
I used InkScape and Skeinforge. I used Skeinforge Carve tool to slice the STL and Opened up the file in InkScape, Print and done. (InkScape has serious problems with scaling that you need to keep a close eye on)by Grogyan - RepRap Host
Re: MakerBot V3.0 Stepper Controller - 16 years ago
I don't think their current design is thoroughly thought out, lots of parts, smaller pitch SMD makes for serious problems for the novice. Still no sign of better EMC. Will you really use 1/8 or even 1/4 stepping? I shall not be buying it, id rather use an L297/L298 combo, as its simpler and more than adequate, or the easyStep which local supplier sells now.by Grogyan - Controllers
Re: Extruder Firmware pin assignment - 16 years ago
I spent a whole day trying to do the same, and its no help from Arduino to nnot describe on their FAQ page what it all means. I don't know why they chose pin 4 to be rx but The Arduino notation of pin assignments are D0 Pin 1 to D13 pin 14 A0 Pin 15 to A7 pin 22 But the ADC called pins are returned as Pin 1 for A0 Crazy huh?by Grogyan - RepRap Host
Re: MakerBot V3.0 Stepper Controller - 16 years ago
Never noticed that before, though I don't like how they have decided against continual use of the ethernet connector, much like how in the Mendel assembly they have the USB cable going to the motherboard crossing over the same lines that control stepper motors, which is a big no no. Personally, when my printer is up and running, I have to redesign these boards to be better EMC and kitable, usingby Grogyan - Controllers
Re: Wedge: Y-axis conveyor belt? - 16 years ago
The problem with this I see is that, insuring that everything sticks to the bed, insuring that he whole bed is even, and doing so may mean difficulty in removing it. You can try, be interesting to see if it worksby Grogyan - Mechanics
Re: Printed drive belts? - 16 years ago
This was a challenge I promoted a while ago in another topic. Challenge: printable and useable chain linksby Grogyan - Mechanics