Also try try cleaning the build platform with rubbing alcohol between prints.by johnnyr - Reprappers
I bet it is that the new configuration.h.dist has the baud rate set to 57600. Set your reprap.properies file to match.by johnnyr - General
Both the firmwares you are testing are currently only compatible with Repsnapper's temperature comms. Try sending M101 and M103 from Repsnapper to Joaz's firmware to start and stop the dc extruder. You can then add them as custom buttons.by johnnyr - Firmware - mainstream and related support
It sounds like you will need to start over the configuration of the host software too when you get the steps/mm set correct in the firmware. The .reprap is a hidden folder in your home directory. Click View-show hidden files find the directory and delete the reprap.properties file. It will be generated with the default settings next time you run the Host software. I know it does not like having nby johnnyr - General
Our latest build suffered from this. Check that all the bearings turn freely. We had some that didn't get the washer installed on both sides of the bearings. That was not enough to resolve the issue here though. On inspection I found the belt was riding up and binding aganst the X end breacket on the idler end. A thin coat of 3 in 1 oil across the top of the belt seems to have freed it up here. Iby johnnyr - Reprappers
Sorry I missed this thread earlier. I posted our thermistor table to the wiki @by johnnyr - General
Deferr, Feel free to contact me directly, but if you have questions regarding these electronics it would be good to ask the questions in this thread so others may contribute and gain too I am following this thread. degroof and rocket_scientist, The schematic Deferr pasted came from I concur about the LM7805. If it is backwards it needs to be changed there and in the svn. I would be happy to maby johnnyr - Controllers
You have it right, other than usong the wrong symbol for ground. I have a set wired up like your modified schematic and it works perfect.by johnnyr - Controllers
This is a full set of all reprap parts needed to build reprap Mendel. Parts printed in Green UltiMachine PLA. These parts weigh 2 lb. 6.9oz. The parts are pretty good but will need a little cleanup, like most RepRap parts. This set includes the original extruder as well as Wade's geared Nema 17 extruder. Posted on Ebay 7 day auction ending Apr 01, 2010 11:16:02 PDT. Just noticed that is Apriby johnnyr - Plastic RepRap Parts for Sale
I ran into this too. I left mine too long with the rods butted against the washers for now. I assumed the added length wouldn't have any negative effects.by johnnyr - General Mendel Topics
Goinreverse, Tonok used the makerbot extruder parts, I think Kulitorum made his own from PEEK. I have a makerbot and have printed 2 mendel sets. The blocking is not solved I think, more expected for me until we work out the next generation extruders. Both guys we are talking about are in the #reprap IRC channel often. Sorry Forrest, didn't mean to be rude or so off topic.by johnnyr - Administration, Announcements, Policy
Tonok and Kulitorum both printed their Mendels on McWires. I don't know how fast, but there are at least two RepRaps thanks to the design.by johnnyr - Administration, Announcements, Policy
This kit includes all the bolts, nuts, washers, threaded and smooth rod needed to build your Mendel. Most bolts, nuts, and washers come with a few extras in case one gets lost. The rods are nice and straight. It is all packed tight and ships well. All studding and bar length cut to +0.8mm , - 0.0mm ends ground and ready for use or filed further. 54 - M3 Cap Screw 20mm 5 - M3 Cap Screw 25mm 20 -by johnnyr - Vitamin Kit for Sale
Brian I really like your ideas and work. Not that I have anything anywhere near as reliable as nophead(thank you for your great blog), but I have played with different combinations of PEEK and PTFE and have some pictures you may want to look at @ . The 0.2 is sort of a hail mary play. The PTFE has a little sleeve inserted into the heater hoping the internal pressure forces the PTFE outward andby johnnyr - General
I see. I am assuming that you are using the reprap motherboard, if not the rest of this post is irrelevant. Looking at pins.h I don't see the step and dir pins for the second extruder under the #elif MOTHERBOARD == 2 section. They show in the direct drive motherboard section, but there doesn't appear to be enough pins with the rs485 stuff. I am guessing you may be able to borrow a couple max enby johnnyr - General
Hi Bing, Sounds like you need to change the configuration.h in one of your extruders firmware. #define MY_NAME '1'by johnnyr - General
We will be there.by johnnyr - Atlanta, Georgia RepRap User Group
I am debugging my Mendel. I think the 5D firmware is setup for Mendel so you will most likely need to adjust the steps_per_mm settings for all the axis. I do not have a Darwin, but I do not see that that should keep the Z from moving. I too am using a thermistor, but did not have to make the "int raw = sample_temperature(temp_pin);" to "int raw = sample_temperature();" change you mentioned. Makby johnnyr - General
Hi Mo, I can not help with the Z axis as mine is functioning properly. I think the problem with the extruder is likely that the step and direction are not transmitted over the rs485, but need their own wires. The mendel wiring diagram here shows the two wires you need marked from scl and sda on motherboard to d9 and d10 on extruder. That was my problem anyway Johnny Russellby johnnyr - General
The automated Dremmel method is atby johnnyr - Reprappers
You may also want to check vxb.com for the bearings. I bought my 624s for $1 each from them, with 48 to a kit they add up quick. I'm not sure what size you will use on the 8-32 bolts, but vxb's homepage shows your inside diameter options. By the way good work on the spreadsheet SheepDog, that was no 5 minute job. I am sure that there are other people out there that could make use of these converby johnnyr - Atlanta, Georgia RepRap User Group
Hi guys, sorry I haven't talked in a while been covered up. I recommend ground a2 tool steel for the bearing rod(I think Vik directed me) it is what I have on my mendel and seems to be good stuff 8116K7 A2 TOOL STEEL TIGHT-TOLERANCE METRIC ROD, 8 MM DIAMETER, 3' LENGTH 13.02 The part number in the spreadsheet for 8mm threaded is for nuts, so I included the threaded I used for reference. 9418by johnnyr - Atlanta, Georgia RepRap User Group
I ran into this too. My solution was to file the bottom m8 nuts thickness to almost half. That left a little bit of clearance between them and the counter my Mendel sits on.by johnnyr - Mechanics
We are down for another trip. Is that price you mentioned above an offer?by johnnyr - Atlanta, Georgia RepRap User Group
Sorry you missed it too. I used 8mm from McMaster, but 5/16" should work fine as long as you adjust the hole it fits inby johnnyr - Atlanta, Georgia RepRap User Group
Cool See you there. Johnnyby johnnyr - Atlanta, Georgia RepRap User Group
Good deal SheepDogRD. I'll say anytime from 12:00 noon on is good for us. Looking forward to it.by johnnyr - Atlanta, Georgia RepRap User Group
Adam, I will send you a meter too PLAy with, just hit me at the link supplied by hardness above. Johnny Russellby johnnyr - Reprappers
December 12th is good with us. We plan on being there with our MakerBot and Mendel (: that should be completed this weekendby johnnyr - Atlanta, Georgia RepRap User Group
Better yet, we would be interested in loading up and bringing our stuff down if some people want to get together and play reprap. Are you a member of Freeside or another space we could meet at?by johnnyr - Atlanta, Georgia RepRap User Group