Just seems to me, that any of the design that relys on plastic in the hotend is going to be suspect in the long run. The one above by theodlief, or the commercial Stepstruder from makerbot (http://store.makerbot.com/stepstruder-mk7-complete.html) have no plastic. No plastic = nothing to melt/deform/break. I'm using an MK V-B, J-Head hotend, and it oozes just a bit, at the brass/PEEK joint at temby TonyG - General
Thanks everyone for the help. I got it fixed. Was a mixture of correcting the table and measuring the actual temps with a thermocouple. And as nophead said, here and elsewhere, the key is measuring from the inside of the hotend, not the outside. Big difference. I also got the PID values corrected, so now I have rock solid temps.....by TonyG - General
Can I use the "createTemperatureLookup.py" for this GEN6 board? I don't seem to understand how "R1" and "R2" in the script coorelate to the schematic for the GEN6 board, since neither parrellel the thermistor - see attached excerpt of the sch. And if I can, can someone tell me the exact command line entry? The thermistor I'm trying to use is 104GTA-2 (not to be confused with the more normal 104GTby TonyG - Firmware - mainstream and related support
more info: Instead of focusing only on the software portion of the potential problem, I looked closer at the thermistor. I had some other 100k thermistors I used on the heatedbed (Vishay-NTCLE203E3104), so I taped one to the side of the hotend, near its thermistor and connected it to a DVM. Then I heated the hotend to ~150, unhooked the hotend thermistor from the Gen6 board and put another DVM oby TonyG - General
I haven't recieved any responses in the firmware forum, and am desperate for some ideas... ==== I'm running an older Botmill (Mendel Prusa), with Gen6 w/Marlin, MK-IVB hotend, 100k thermistor and I'm having a devil of a time controlling temp. I've been able to print, but was always baffled by having to use 220 deg C just to print PLA. Anything below that and the extruder would jam and skip. Onceby TonyG - General
I'm running an older Botmill (Mendel Prusa), with Gen6 w/Marlin, MK-IVB hotend, 100k thermistor and I'm having a devil of a time controlling temp. I've been able to print, but was always baffled by having to use 220 deg C just to print PLA. Anything below that and the extruder would jam and skip. Once I got past that temp, it would print, but never to a quality you'd like. I was searching the netby TonyG - Firmware - mainstream and related support
I sure like the idea of a magazine (e-zine), and while I like to read some articles in print, especially if they are a tutorial or guide to building something, online mags give you the ability of imbedded videos. Something printed mags can't touch. And when you're trying to replicate some ones instructions exactly, video is often the only way.... Great idea, can't wait to see the 1st issue. Anyby TonyG - RepRap magazine
I bought a used Botmill ?Glider?, that had a wades extruder added to it. I rebuilt the mechanicals from nearly the ground up (make sure everything moves freely, but snuggly against the rods). Before you go paying someone to fix yours, maybe these settings files will get you going. Here are my marlin configuration.h file (I don't use configuration.adv.h file) and my slic3r config file. I just gotby TonyG - General
spaceman, I just had a very similar sounding error, that the guys on this board helped figure out over in the "General" section... might be helpful.. thread titled "Strange Z axis Error"by TonyG - Firmware - mainstream and related support
It worked ! Slowing the to 2 did the trick. Part was within .03ish on each level. Xiando; These are the calc used to set that value equation: ( (motor_steps_per_revolution * (1/driver_microstepping)) / leadscrew_pitch ) * (gear_ratio) My machine looks like this; Motor step angle: 1.8 degree Driver microstepping: 1/8 - UStep (Gen6 board) Leadscrew pitch: M8 - metric (1.25mm per rotation) Gearby TonyG - General
Xiando: That config started out from that calculator, then I made changes. Of the (40...,40...,3360, 257...) all but the 3360 are my adjustments from doing calibrations, more than once. I didn't mess with the max accel, or the other setting much yet. Though I did change the max feed rate to (250, 250, 5, 45), instead of (500,500,5,45). The X and Y were just going too fast. Alagi: Didn't see theby TonyG - General
#define MAX_STEP_FREQUENCY 40000 #define DEFAULT_AXIS_STEPS_PER_UNIT {40.254662,40.02193,3360,257.0736293} #define DEFAULT_MAX_FEEDRATE {250, 250, 5, 45} #define DEFAULT_MAX_ACCELERATION {4000,4000,100,10000} #define DEFAULT_ACCELERATION 3000 #define DEFAULT_RETRACT_ACCELERATION 3000 #define DEFAULT_MINIMUMFEEDRATE 0.0 #define DEFAULT_MINTRAVELFEEDRATE 0.0 #defby TonyG - General
Did all that. Wrong step factor would be my target, except the machine works fine (100%), when you manually ask it to move using pronterface. It only does the 80% thing during prints....by TonyG - General
I have a used Prusa Mendel (BotMill), that I changed over to marlin, from the unknown fiware that was not working well. I've worked out quite a few issues with your help, but I have one that is a real stumper. The Z axis only moves 80% of what is sent to it during prints. I've done the calibration several times and double checked the movement in 10mm steps from 10 to 110mm, and back, using pronteby TonyG - General
I installed Marlin on my Gen6, got it running pretty good, but it still needs some tweeks. Does anyone here know of a more or less complete listing of the meaning and min/max for all the configuration.h settings? Many of them are touched on in the forums, but I can't seem to find a comprhensive listing. Thanks, T.by TonyG - Firmware - mainstream and related support
Lodorenos, I can appreciate what you are saying about customizing, and for things like steps per mm and the like, it's easy enough to go thru the calculations. There are many other settings in the config files that make very little sense to a noob like me, ie: jerk, PID, exactly what to comment in/out, etc. This is where, as a noob, I have no idea where to begin. I did my best to adjust the fiby TonyG - General
I like to ask you all for a little help in getting my machine working properly. I bought a (very) used botmill glider, repaired/modified the mechaincs to working, now I need to update the frimware in the Gen6 board. It has the original 5D, and though I can run the machine, it is not accurate. I do not have the original configuration files that are in it, nor do I know if any changes were made toby TonyG - Firmware - mainstream and related support
I like to ask you all for a little help in getting my machine working properly. I bought a (very) used botmill glider, repaired/modified the mechaincs to working, now I need to update the frimware in the Gen6 board. It has the original 5D, and though I can run the machine, it is not accurate. I do not have the original configuration files that are in it, nor do I know if any changes were made toby TonyG - General
Hold on, I succeeded ! With a mixture of baud rate changes, reset button hits, powering on/off, and a liberal amount of verbal abuse, I finally got it's attention and was able to pull off the firmware into a binary file. I can't read it, but atleast I have a way back. Now onto loading Marlin.... Thanks a bunch... T.by TonyG - Firmware - mainstream and related support
Thanks Polygonhell. Before I upload Marlin, I wanted to get a copy of what's in the device (safety first). So I looked thru the reprap.org site and found a command they said will copy off the present firmware in the device; avrdude -c avrisp -b 19200 -i 10 -p m644p -P COM8 -F -U flash:r:factory_gen6.hex:i of course, it doesn't work. It gives me the error; avrdude: stk500_getsync(): not in synby TonyG - Firmware - mainstream and related support
M115 did nothing either. Polygonhell, you mentioned installing marlin and going thru the "setup process". I pulled Marlin off github, and all the adruino/sanguino etc, but where is the "setup process" you mention? Or did you mean those other bits of software. I could really use a step-by-step on this... not only to get the firmware into the Gen6, but to calibrate the machince once there. Tby TonyG - Firmware - mainstream and related support
tried M502, got nothing. Must not be Marlin. One down. I'm guessing,by the age of this machine, it might be FiveD....by TonyG - Firmware - mainstream and related support
I'm a noob, sorry, but I couldn't find the answer in the past posts. Short version: Is there a way to get the firware settings already uploaded onto the Gen6 board? Long version: I bought a used BotMill (Prusa) and after a rather major mechaincal rebuild, I'm still not getting the results I think I are correct. The original owner replaced the extruder with a Wade's, and I'm guessing had to makeby TonyG - Firmware - mainstream and related support