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General discussions. For specific printers / electronics / fabrication methods / softwares, please see other sections.
Re: Error when trying to load extruder firmware - 13 years ago
here is the software download page look at bottom of page for 'Previous IDE Versions' here is a direct download to windows version 21 here is a direct download to linux version 21by jamesdanielv - General
Re: Extruding Nylon - 13 years ago
I tried extruding nylon (polyamide) a while back, it works for short runs, but i had issues with the bubbles in the plastic showing up. it is good to know that 10hrs curing in high temp would reduce the moisture level. the other thing that kinda turned me off to it was the fact that it released cyanide hydroxide just a little bit above melting temp. Think it is around 10deg c above. Can't finby jamesdanielv - General
Re: inlay nichrome in aluminum/bronze casting? - 13 years ago
this may be helpful: melt temp 660c Thermal expansion .000023 per degree Celsius, melt temp 1400c Thermal expansion .000014 per degree celcius. melt temp 950 Thermal expansion .000018 per degree Celsius, more reading, actual stuff: now you know i can use wiki and google. just like anyone else....by jamesdanielv - General
Re: Mendel or Prusa Mendel - 13 years ago
prusa is new, and not as well understood yet, but it works. if you are looking for mendel or prusa think of it this way. a prusa will give you a mendel faster as in make prusa, then make a mendel. even if it does not work the best, you can easily and cheaply hack parts for it. granted i have not built one, but i do know how well bushings can work out of hdpe. i also know abs is the wrong materialby jamesdanielv - General
Re: inlay nichrome in aluminum/bronze casting? - 13 years ago
remember that silicone can be used as a mold for casting low temp metals as long as it is fully cured here is a sheet that shows various mold types of silicon I think this company also sells powdered metal materials. there are some other issues to consider if you are embedding wire in aluminum. rate of expansion of material, amount of oxide growth, and thermal stress. sounds interesting.by jamesdanielv - General
Re: Circle looks off - 13 years ago
the zip ties are used in example here good luck!by jamesdanielv - General
Re: Circle looks off - 13 years ago
sounds like you are using skeinforge? if so in carve settings lower your perimeter width over thickness, so it knows your width is thinner, and will space the plastic closer together. also change it in fill ->thickness over width to a lower value. if no improvement keep lowering the thickness over width to a lower value. this is a value that tells skein where to start and stop infilling becby jamesdanielv - General
Re: Reprap build - 13 years ago
try also reinstalling this. this will fix java3d program. that program also is used and called, because of 3d graphics. i seem to remember having this problem a year or so ago. this fixed it. here also is reprap host troubleshooting page another option, not trying to nudge you at all, repsnapper works well for setup. it is hereby jamesdanielv - General
Re: Reprap build - 13 years ago
i had the same issue when trying to mod maker-bot firmware. you need arduino ide located here . i think ide18 is the latest supported and then this location has the files to download currently supports windows, Linux, and mac instructions are located in the files downloaded. there is arduino.cc and sanguino.cc the files add software support to ide for wiring pins and for the second serial cby jamesdanielv - General
Re: Motherboard Programming - 13 years ago
try uninstalling jre and then reinstall with this version here: i had replicator g not work after it crashed on me. i spent two days trying to figure it out. not for sure known, but jre did an update, then it no longer was compatible with java3d app. since i didn't want to mess around with updating java3d i just went to control panel and uninstalled java, then clicked on the download link i prby jamesdanielv - General
Re: Using send.py - 13 years ago
another option is to send a generic code that sends a reply back change/replace.csv file M101,M103 to M105 - this code sends you back the temp value and sends an ok. lines with no data seem to cause the firmware to hang. nothing to reply to gets no reply, no reply gets no new command. I wish that the firmware was an aggressive. meaning that it ensured conversation, and assumed someone wasby jamesdanielv - General
Re: CNCZone.com now hosting 3D Printer forums - 13 years ago
I like cnczone.com it has lots of helpful technical info. it also has a lot of knowledge on emc2/mach3 that i do not think this community is ready to receive as of yet. that may change if we get some hefty cpu power machines running linux based firmware (emc2) and that is just my guess where it may head . I would ask around bit more and maybe chat with the admins of this site. a thing that thisby jamesdanielv - General
Re: reprap freezes on checksum error - 13 years ago
try slowing down your baud rate and see if the error still occurs. also remove comments from code (this is a comment) - for example. if a line is over 126 char then with the cr lf (line feed/char return) char it is over 128 and will not fit into the ftdi buffer, and you will loose data. default now i think is 57600 baud, in your firmware configuration.h file look for baud or baudrate and change iby jamesdanielv - General
Re: Opto isolator board - 13 years ago
you can also look for "parallel port breakout board with optical inputs". like this just searched on Google, this result turned up. don't take my word for it.by jamesdanielv - General
Re: Catalyst Mendel continued development - 13 years ago
you will want to temporarily disable end stops in firmware configuration. i will need to add support in the code for pull up resistors to be enabled and test end stops, probably in the next two days. FYI...by jamesdanielv - General New Machines Topics
Re: Catalyst Mendel continued development - 13 years ago
here is the version of reprap code modified to fit and run in the memory limitations of the arduino 328. the code size is 26k. I think the code works in less than 2k of ram now. i need still to also do a ram size analysis. all i know for sure is the arduino seems happy and is talking with reprap host, error free. you can change the baud if you want, i was using a safe 19200. also change the moveby jamesdanielv - General New Machines Topics
Re: New cutting edge electronics soon available -- ARM 32bits @ 100MHz - 13 years ago
nophead, any issues with axis skipping steps and interpolation? for example G0 X40 Y11 ? (max feed-rate) the issue i see is floating point math is needed to ensure the y axis turns at a constant federate instead of stopping and starting every few steps unevenly spaced .even spacing of the y steps versus x steps. then again this is mitigated by micro stepping at 16x, can you do it at the same speby jamesdanielv - Next Wave Electronics Working Group
Re: Arduino Mega using Shapercube (joaz's) firmware, problems communicating - 13 years ago
there are issues with older firmware and reprap host. i think it is when the check sum is not returned. I'm looking into it too. basically rewrite your firmware around the new one. The new firmware is good in the sense the interrupt handling no longer causes serial errors. the bad is it is a bit more to look threw and a big change in how it is written. the mega version works out of the box withby jamesdanielv - Firmware - mainstream and related support
Re: Catalyst Mendel continued development - 13 years ago
hello, in response the latest version of reprap host does not work. i am not sure if it is because of check sum generation. use a version before march. and be sure to set the baud rate to what it says for the firmware choice. In the mean time I've ordered a few 328s to play with (been rid of 328's since mega..) I will compile the mega release version for the 328. i will release the updateby jamesdanielv - General New Machines Topics
Re: Chumby Hacker Board - 13 years ago
I think there is nothing better than the emc2/mach3 experience. There is about 400X more power in your current pc if you think about all the math, and the floating points that are done in the 8 bit arduino, that are converted to 32bit single float math. there is work on better processor support, but i think there is also a shortage of supply on arduino and arm processors when demand creeps up, tby jamesdanielv - Next Wave Electronics Working Group
Re: New cutting edge electronics soon available -- ARM 32bits @ 100MHz - 13 years ago
what compatibility will the firmware have for ARM kits such as the et-arm stamp? comparable in cost to arduino, but about 10x performance, up to 50x performance on float math. BTW, you may turn heads if you do a bunch of vidoes showing round objects, or making gears at above 32mm/s-64mm/s with '1' micro controller. something easy to do with mach3/emc2 and a 700mhz Pentium, but not realistic onby jamesdanielv - Next Wave Electronics Working Group
Re: Can you run with no end stops? - 13 years ago
hello. if you manually home, and want the position to stay in any controller software, just send the following command in gcode to the first line of code. G92 X0 Y0 Z0. what you are doing is zeroing the system to tell it that the location you are at is zero. so in your build files in skienforge, add this line if it does not exist in alterations file for start.gcode or start.txt this way evenby jamesdanielv - General Mendel Topics
Re: Opto isolator board - 13 years ago
the above link is to a pdf of the schematic chip used, and the chip cost from digikey. the chip used in the rrrf part is the HCPL2630.by jamesdanielv - General
Re: Catalyst Mendel continued development - 13 years ago
hello, i am doing an update on firmware that includes a change with serial TX buffering. that seems to be where a lot of issues are coming from. I am following what is going on with replicatorg development as well to determine compatibility. also FYI i have included a link to 5donarduino drivers on my web page as well. thanks for the feedback, Jamesby jamesdanielv - General New Machines Topics