kasey

Ok, I have found the problem, the steppers was overheating. Cf : http://wiki.ultimaker.com/Electronics_b ... or_drivers

Hello, I have an simple head Ultimaker with a pcb 1.5.6, flashed with the last firmware (UM-v1.1-PCB1.5 115200) but I encounter an issue with my steppers. When I start an extrusion, after some seconds, the steppers miss many steps and do very stange songs, like if the uC was submerged by some interrupts. I have made a movie to explain that : http://forge.kasey.fr/movies/ReplicatorMotorDriverIssue.mkv I have : [*:1o741sty] checked power supply, I have a continuous 19.6 v [*:1o741sty] try replicatorg, printerface, Ultimaker hardware controller [*:1o741sty] check connectors [*:1o741sty] double flashed the Arduino 2560 Somebody have an idea for the origin of my problem ?