Why did this thread end ?? Did everyone give up on this idea or go somewhere else ??by HereIgoAgain - General
I became interested in building a Mendel about a year ago. Ordering parts from all over the world, I can't tell you how much fun it was to get home from work every nite to see what new stuff had arrived (note: and what stuff I bought that I didn't need or was wrong). After more trials and tests than I care to admit ( I think I built 10 to 15 hot ends before I finally broke down and bought one thaby HereIgoAgain - Reprappers
It's taken awhile but...it repraps!! my first "thing". thanks all, especially you brnrd. Probably be a bit before I'm printing real things but what great fun this is.by HereIgoAgain - General
Hello again, In my impulsiveness, I read your message late and ordered instead a j head nozzle mkiv-b (I will however have this post should I need to reorder). The new nozzle appears to work fine and now i can squirt pla. My issue now (there always seems to be the next issue) is I am having trouble getting the pla to stick to the blue painters tape I added to the (as yet ) unheated bed. It alsby HereIgoAgain - General
hmm I'll take a look at the new software. What type of hot end do you use. Seems that's my issue now. I've built and built but I think it's time to purchase one. Any recommendations ?by HereIgoAgain - General
Yea I found out that the extruder had been disabled, and remembered your comment. I added the lines back in and recompiled and the extruder motor now works too. as far as using the new software, I assume you're speaking of arduino-22. I already use this software to drive the mb but must use the 21 version for the extruder, not sure why that is. just about up to temp now so I'll see what happenby HereIgoAgain - General
Today I am encouraged. I retightened and checked each and every wire. I also pushed on all chips and then went back to the files brnrd sent. Here are my results: temp set : 190 range 180-190, 181-191, 182-190 temp set : 200 range 194-200, 194-200 temp set: 195 range 187-195, 188-195 each time led for resistor (temp on) went out at the upper limit This looks good. Don't know what will be neby HereIgoAgain - General
Spent time returning software back to the original with about the same results. Plan to make one attempt using the software you sent to see if it was a loose wire or something that kept the thermistor from registering (moving from -8). In the wiki, it suggests gen 6,7, RAMPS or Sang boards, so your comments regarding RAMPS and Sanguinololu seems like a good suggestion. Not quit sure how Raby HereIgoAgain - General
not sure if the heater stays on or not since the temp indicator doesn't work. I'll play with it again today and see what happensby HereIgoAgain - General
So another question, If I should decide to retire my gen 3 electronics, where is your recommendation for new electronics. It looks like there is a gen 7. And does this contain everything on one board (no need for stepper motor boards or extruder ? thanks....it's good to have a plan Bby HereIgoAgain - General
Yes same thing today. When started, the current temperature reads -8, no matter what my temp.h file reads. The program run ie. the resistor will heat, but the temperature is not monitored.by HereIgoAgain - General
Hey Brnrd, I do have the same PID values so I am exploring the software you sent. On the first go around, I copied my temps into your temp.h program but when I ran it it does heat but the temperature doesn't change. It's getting late tonite and I will try it again tomorrow. thanks for you helpby HereIgoAgain - General
Tried tapping the regulator but not much...here is a listing of the values up to t199 then back down. Maybe better look for yet another extruder board. Brnrd do you have any experience with the software ?? comms: Response: ok T:186 B:120 [166.437s/31ms] comms: G-code: N129 M105 *13 dequeued and sent [167.937s/1500ms] comms: Response: ok T:188 B:121 [167.984s/47ms] comms: G-code: N130 M105 *5by HereIgoAgain - General
Tried to remove PID but without much success. There are a lot of references in the software. Might be easier trying to figure out the PID. I did twist the wires on the thermistor and plan to use twisted wire for the resistor. Hardware is Gen 3 ver1.2 MB and ver 2.2 extruder board. and yes the mother board connects to the extruder thru a pins D9D10 on extruder and SDA SCL on MB. Thermistorby HereIgoAgain - General
wow, no lack of ideas here. My firmware for the extruder is anduino 0021. I believe PID is controlling temperature as bang bang is commented out. If I can figure out whats actually going on in the temperature software I think this might help (at least it'll make me smarter). Is is possible to do a run thru of how temperature is delt with in the software. My c skills I think still work (been aby HereIgoAgain - General
Hey again, I took what you mentioned to heart and while I couldn't place the thermistor in the material (it isn't round), I did heavily insulate the heater block thinking maybe it was cooling and heating faster than it could respond to. I also changed the number of points from 20 to 30. The resulting changed the outcome to the range 161-233. I let it run for about 10 minutes with about the sameby HereIgoAgain - General
Hi all and thanks for responding. I've included the table I'm using followed (commented out) by the original values. // ./createTemperatureLookup.py --r0=100000 --t0=25 --r1=0 --r2=5000 --beta=4400 --max-adc=1023 // r0: 100000 // t0: 25 // r1: 0 // r2: 5000 // beta: 4400 // max adc: 1023 #define NUMTEMPS 20 short temptable[2] = { {1, 637}, {54, 222}, {107, 184}, {160, 163}, {213,by HereIgoAgain - General
Today I went thru and verified my thermistor, used the python script and generated new values for the thermistor and recompiled the code. Unfortunately with the same results. It seems the resistor when set to 190 will heat to ~203 and then cool to about ~165 repeatedly. does someone know where in the code I can look to set the parameters for how long to heat and when to stop ?by HereIgoAgain - General
thanks for responding Redbeard. I'll look into this. It just seems odd that with the last extruder board the temps ranges seemed to work fine. Another thing is the temperature does appear to work....just goes a bit high and then too low, but I think the thermistor is workingby HereIgoAgain - General
I recently replaced my extruder board (gen 3 electronics), and while the new board appears to works fine, the temperature range now varies. It heats up to 200-203 and then cools to ~160 and then oscillates in this range. I'm guessing this is controlled in the software (Arduino-21) somewhere. Could someone tell me where. Thanksby HereIgoAgain - General
Hey again sages of reprap. I recently replaced my extruder board (gen 3 electronics), and while the new board works fine, the temperature range varies. When I first start the temp goes to 200-203 and then cools to ~160 and then oscillates in this range. I'm guessing this is a software switch somewhere. Could someone tell me where. Thanksby HereIgoAgain - Controllers
Naldarn, got the board a couple of days ago and played with it this morning. Had it up and going in about 5 minutes. Thanks so much.by HereIgoAgain - Wanted
Hi Naldarn, Yes I would be very interested. Do you have paypal ? and know shipping costs?? as for firmware, I'm not really sure what you need. I'm running windows and Arduino-21 software for the extruder. Greg, thank you too for responding but if possible I'd like to limit the variables I'm dealing with ...at least for now.by HereIgoAgain - Wanted
Help!! Believe my extruder board, at least the thermistor quit working. Anyone have one to sell, rent, or loan ?? thanks in advanceby HereIgoAgain - Wanted
I posted this in the general topics area but haven't heard anything. I'll try it here. Sorry for the duplicate post!! Can anyone translate this ?? Things were working fine. Now no matter how many times I recompile...download I can't get the temperature to work. All I get is 0. Definitely seems to be an issue when I get the mother board to connect to the extruder board. The debug led near the reby HereIgoAgain - Controllers
Well, it's been a few days and I haven't heard from anyone. Definitely seems to be an issue when I get the mother board to connect to the extruder board. The debug led near the reset button and led 08 both lite up. Anyone have any suggestions or should I try to procure another extruder board ?? Just wonder what I did..It all seemed to be working so well.by HereIgoAgain - General
Can anyone translate this ?? Things were working fine. Now no matter how many times I recompile...download I can't get the temperature to work. All I get is 0 thanks Here's the code that runs...and after it does, a debug lite lights. Did I burn up the board ? It's odd because things seemed to be working fine. Native lib Version = RXTX-2.1-7 Java lib Version = RXTX-2.1-7 comms: G-code: Nby HereIgoAgain - General
thanks for the captivate info. I will be wrapping this up later this weekend. Ok so now back to mendel. Here I was playing...tweaking...getting plastic to flow and ahhh....the thermistor quite responding ??. I recompiled and uploaded software multiple times to the mother board and to the extruder board...this has always worked in the past but now I get get the thermistor to report ??. On theby HereIgoAgain - General
To adjust the pots certainly has made things run better, however, unfortunately, I think the real error was operator error (me). Let me explain. Before trying to actually print anything I thought I would heat up the extruder, press the extrude button, and extrude till I was satisfied that it all worked. I thought I could just turn on extrude and it would extrude till I hit the button again. Wroby HereIgoAgain - General
Hi All I want to take a moment to thank all who have held my hand thru this exercise. I've attached my first print...not much but hey....it works!!! Looks like I need a better nozzle. Currently using a welder tip .05mm but its really not long enough and I think a bit too wide. The quest continues, but not without reward. Thanks againby HereIgoAgain - General