se5a Wrote: ------------------------------------------------------- > well if you swapped x and y that would have used a > different pololu. Ah yes but it was then the X-axis travel that was incorrect. Sorry this probably wasnt clear. Anyway, I have tried with different Sanguinololu board, new end stop wires and the problem is still there!! It is not causing an issue with my prints I dontby Emin8 - General
Longboat Prusa using Pronterface. I am troubleshooting why I am getting some dodgy prints. Using Pronterface I can click on the +Y 100mm travel and it works super. If I click on the -Y travel then I get problems. Most of the time it doesnt travel the full 100mm, sometimes nowhere near 100mm and yes I am definately not clicking the 10mm feed by mistake . +Y 100mm travel works 100% of the time aby Emin8 - General
There was no problem with alignment. I have a new hobbed bolt now and I have no problems! Conclusion - The hobbed bolt shipped with the longboat prusa was not up to the job, or at best would of had to be set up perfectly with lower feed speed probably. thanks all.by Emin8 - General
Looking at the other hobbed bolts mine does look a bit pathetic. It doesn't have the concave radius which I reckon helps a lot. Mine is prone to squashing I think as a result. Mine just looks a feels like someone has tickled it with something Replacement ordered! Cheersby Emin8 - General
I am having problems with my Longboat Prusa. My filament is getting stuck. It is getting squashed flat or is being nibbled at by the hobbed bolt. It does work for a bit but then stops by getting jammed and I have to dismantle it and start again. I am sure the hot end is a good temperature as I can feed the filament through by hand pretty easily. I have tried different pressures on the idlerby Emin8 - General
I didnt get my activiation email either.by Emin8 - General
I am having a problem with my extruder. Best shown by this video. Extruder Problem Video Apologies, this video has been converted to divx .mkv file, so I am not sure how compatible that is for all of you. Basically when I hit 'Extrude' from within Pronterface it works for the first time, maybe a second time but then it 'sticks'. It still manages to do the full extrude, or appears to but you caby Emin8 - General
Yes that is what I believe to be correct and how |I am going to do mine. I dont have it working though yet. Anyone else confirm?by Emin8 - General
I am reluctant to give advice to anyone else seems as though mine isnt working 100% yet but I would say that is wrong. Your +12v to one end of the heat resistors is correct. The other end of the heat resistors that links to the Source is incorrect I think. That should link to the Drain, not the Source. What you have drawn seems to be as it is in the instructions which based on all the informatioby Emin8 - General
Ahhh...the mist is clearing!! I now know what I am doing! I actually understand how the MOSFET works now and what that link on the board does. Many thanks nophead and thanks for your patience with me I think I have broke my MOSFET by wiring it up wrongly and have ordered another one that will hopefully come today.by Emin8 - General
@nophead - Other 2 pins on control bed? I only have one connected to the gate as per the instructions. The other 2 are the +12v and 0v from power. Does it just sit there connected to the connector on the bed? Nothing else connects to it? What is this control signal? Unfortunately I cant resolder the original MOSFET back on to the board. I have successfully done everything else on this projectby Emin8 - General
Oh cripes another alternative! ... ...or you can leave it on the bed and connect gate to the sanguinololu output, source to ground and drain to the heat resistors. Gate to sanguinololu output? - I thought that the +12v output from Sanguinololu goes to the heat resistors? As per the circuit diagram in Adrians Prusa notes Adrians Prusa Notes and the Gate goes to the resisitor. I do appreciate eby Emin8 - General
The first couple of lines of text on my attached image says 'Because the heated bed has its own driver transistor mounted on it, you don't need the one on the Sanguinololu board (Q2 on the Sanguinololu circuit diagram). Remove Q2 (desolder or cut legs) and replace it with a link as shown in the image.' Sorry, this is where I get Q2 from. I removed Q2 from the board and soldered a link. So I amby Emin8 - General
Ok. So if I forget about the MOSFET on the bed do I need to remove the link I made on the board? An put the Q2 back that I de soldered Thanks for your help.by Emin8 - General
I have successfully assembled my Longboat Prusa and the motors all work ok, the hot end is fine, I am just having problems with the heat bed wiring. I have already tried it once and it melted my 644P chip! I have a new chip and all seems ok. The attached image shows exactly what I am doing and where I am not sure what to do. Could you please take a look at the attached image and see if you can hby Emin8 - General