I am currently using the lazer cut Mendel form tech zone. i have the xy and z axis moving in replicatorg and have calibrated them. i am trying to get my extruder finished but the h bridge chip overheats. i am using a stepper motor on wades gearbox for extrusion. I have a spare stepper motor board as well but am unable to get that to move as opposed to the extruder stepper. I have had the most luck manually with firmware 2.3 the beta stepper. I was going to try https://github.com/koenkooi/G3Firmware/downloads but do not know how to get the hex file uploaded onto the extruder. with the 2.3 firmware i am setting pwm to 160 and rpm to 10 and 4 without any difference. the rep rap will extrude in the manual setting using this but since it over heats i can not make any objects. any help would be greatly appreciated. https://reprap.org/forum/read.php?4,69386,69386#msg-69386 Mon, 15 Jun 2026 10:54:02 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?4,69386,69386#msg-69386 https://reprap.org/forum/read.php?4,69386,69386#msg-69386 I have a spare stepper motor board as well but am unable to get that to move as opposed to the extruder stepper.
I have had the most luck manually with firmware 2.3 the beta stepper.
I was going to try https://github.com/koenkooi/G3Firmware/downloads but do not know how to get the hex file uploaded onto the extruder.

with the 2.3 firmware i am setting pwm to 160 and rpm to 10 and 4 without any difference.
the rep rap will extrude in the manual setting using this but since it over heats i can not make any objects.
any help would be greatly appreciated.]]> dbhellmith Reprappers Sun, 02 Jan 2011 01:28:52 -0500