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Oops
Have been away from this for a week or two. After the weekend, now have it printing reasonably. extrusion feed just needed calibration.
Had the first prints with the students, and we will start printing parts for a second printer this week. Dust, what is the link to the ilder pulley covers you made for me. I thought I had found them but have lost them against
I am enjoying the look
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senglish
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New Zealand RepRap User Group
Hi. Have appeared to have fixed my own problem. It was of course operator error. I was reseting the board too early so by the time the programing communication was occurring the time period for the bootloader kicking in was over.
It is still a bit flakky tho with some times 2 or 3 resets needed before the firmware loads.
actually, still a little confused as I went back and checked the board
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senglish
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Firmware - mainstream and related support
Hi,
After uploading the sprinter firmware to my mega 2560, the printer is working fine. But it is not calibrated. So did the calibration tests and changed my values in configeration.h
And I compile and try to upload new firmware and nothing happens. the first firmware upload appears to have killed my bootloader.
Has anyone else had this problem and what is the answer to it.
I know the usb c
by
senglish
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Firmware - mainstream and related support
aha.
yep thought they were related to the belt clamps due to the hole spacing.
We have learnt lots. damaged one linear bearing, played with the software, openscad is a great way to show the maths behind cad programs
have model of rostok showing the maths of how it works in geogebra 5 beta, a 3d maths graphing/animation program
regards
by
senglish
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New Zealand RepRap User Group
Hi Dust,
Thanks, actually have just decided that was a dumb question as we are still calibrating things here. Lots of excited students now that they can see what things look like, most probably shouldn't have got over excited and started printing.
My power supply isn't large enough. drops down to 10 volts when hotend, bed and 4 steppers travelling.
Love the pully covers. Didn't realise w
by
senglish
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New Zealand RepRap User Group
Hi
Well the first one is up and running. Printing isn't fantastic yet. Need to work on the layer thickness I think. The nozzle is 0.42 mm. What should the layer thickness be? It was set to 0.4 in pronterface.
cheers
by
senglish
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New Zealand RepRap User Group
Hi,
Well Peter (Dust) in chch has just emailed saying my plastic parts are finished.
see [4.bp.blogspot.com].
I have bits and pieces flying from all over the world, The only thing I haven't got coming my way are all the smaller nuts and bolts and the smooth steel, which i can get locally. So now all I can do is sit and wait and tell the students that thing will arrive soon.
Have decided t
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senglish
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New Zealand RepRap User Group
Hi wired1,
no nema values have nothing to do with torque. the number is a 10th of the size of the motor in inches. ie nema 17 means 1.7 inches in diameter or about 43mm across, nema 24 are 2.4 inches across (about 61 mm)
Some of the motors motors coming out of the copiers are 43 mm across but are 30 mm long and others ar up to 50 mm long. We will be powering them up next week with a test
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senglish
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New Zealand RepRap User Group
Hi, Thanks for that info thinkthatmaybe. some of my students have had a look at your link and have an added keeness.
They have spent the last two days (1 hour each day) at our local photo copy company, have various nema 17 (obout 30) and about 10 nema 24 for use in a couple of milling and other cutting projects that are coming up. Still got two days supply of copiers for the students to work
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senglish
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New Zealand RepRap User Group
Hi everyone,
was just wondering what repraps were anywhere near Rotorua.
I am at the very start of the process of getting one up and running. Have a group of secondary students who are quite keen to try making them.
I have also managed to get hold of ex photocopier stepper motors, they appear to be nema 17 and 23 in size but have not yet tested them to see if they will have enough torque for
by
senglish
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New Zealand RepRap User Group