furynick I noticed several time a unsollicited reboot when making long beeps.Here is a part of my start G-code :M80 ; Turn on powerM107 ; Turn off fanM140 S90 F1 ; Start bed heatingG91 ; Use relative coordinatesG1 Z1.5 F600 ; Move nozzle upG90 ; Absolute positioningG28 X0 Y0 ; Home extruderG1 X104 Y104 F2880 ; Center nozzleG28 Z0 ; Home ZG1 X0 Y0 Z2 ; Move 3mm off the bedM300 S2500 P1000 ; BeepG21 ; Set units to millimetersM82 ; Extruder in absolute modeM190 S90 ; Wait bed end heatingM300 S2500 P1000 ; Beep; Wait for all used extruders to reach temperatureM109 T0 S245M300 S2500 P1000 ; BeepSince I disabled beeps I had no more reboot.The problem occur more frequently when bed & extruder are already at target temp.Same problem with 0.91 & 0.92 on ramps 1.4/mega 2560.
Repetier That is not a software, but a hardware problem. The high frequency on beeper line causes the avr to trigger reset. Maybe crosstalk maybe just brown out. See log entry on restart what the reset reason is.
furynick Ok, thanks, I disabled sound, I'll use external commands to play sound once I'll setup my raspberry with repetier server.