I was also reticent about modifying the firmware settings when doing the slic3r is nicer checklist, too, but it really did make a massive difference for the better. Sorting out the number of extruder steps really improved things for me, and that's only really do-able in firmware. I've got a box full of misprinted crap that I did before I went through the calibration steps outlined in those blogby nowhere.elysium - Huxley
Turns out it was a crap connection. I've sorted it now, so all that remains is to totally stabilise the PID response, and I'll have a happy RepRap. Nophead, NewPerfection - thank you both for your helpby nowhere.elysium - Huxley
OK - I've since fiddled some more, and tried setting PID_MAX to 63, in an attempt to slow down the heating process a bit. That's worked, but it hasn't solved the more insidious problem that's plaguing me; I'm getting sudden sharp drops in temperature, and I have no clue as to what to do about it. I've only got the one fan, and there isn't any kind of speed control for it. There's also no obvioby nowhere.elysium - Huxley
PID_MAX was definitely a help, so thanks nophead - you really are the guy to come to with RepRap questions I managed to get the PID autotune to kick in by convincing it to start to play *after* it overshot the 150C mark. The results aren't 100% accurate (it goes over temperature by about 10C) but it's a lot more stable as a result. That was using the 'no overshoot' figures given, with 9 samplesby nowhere.elysium - Huxley
Hi all. I've been playing around with the Huxley for a few days, and I've had some OK prints out of it, but I've noticed that the temperature regulation of the hot end is all over the place. This is causing no end of trouble for me - I've wasted loads of filament because prints have crapped out partway through with MINTEMP errors. As such, I decided to have a crack at the PID autotune function iby nowhere.elysium - Huxley
:EDIT: Yeah, I was being a bit of a spanner. Sorry for wasting people's time. Hi all. I've just finished assembling a Huxley bought from RepRapPro, and I'm having a hard time getting the heatbed to behave itself. The heatbed heats up, but the thermistor is over-reading, and it won't respond to any attempts to set a lower temperature through pronterface. According to my infrared thermometer, itby nowhere.elysium - Huxley