HotEnd temperature problem after tuning.
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Hello,
a use duet wifi and heated bead 30x30cm with lizard hotend.
I print with petg.
bed 70 stC
hotend 230 stCAfter tuning bed and hotend i try to print.
But when print first layers my hotend have spike of temperature and get fault.; Heaters
M950 H0 C"bedheat" T0 ; create heater #0
M143 H0 P0 T0 C0 S140 A0 ; configure heater monitor #0 for heater #0
M307 H0 R0.381 K0.711:0.000 D4.56 E1.35 S1.00 B0 ; configure model of heater #0
M950 H1 C"e0heat" T1 ; create heater #1
M143 H1 P0 T1 C0 S285 A0 ; configure heater monitor #0 for heater #1
M307 H1 R5.486 K1.099:0.000 D3.39 E1.35 S1.00 B0 V24.1 ;configure model of heater #1 -
@kivlow Please post your full config.g and the response to M122.
Generally, in order of most likely to least likely, spiky temperature readings are caused by:
- intermittent wiring - loose connections, poor crimping, frayed wires, dry solder joints. It may only happen when the wiring moves, or when temperature changes.
- failing temperature sensor - may only show when at temperature
- Electrical interference - usually from heater or motor wiring running very close to the temperature sensor wiring. Generally shows when machine is operating
- Power supply issues - faulty or failing power supply, external power spikes (eg large/noisy dc motor on the same electrical circuit starting/stopping)
- Hardware issues - faulty Duet board.
- Firmware bug - least likely because this is heavily tested, and would be reported by other users.
Ian
