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HotEnd temperature problem after tuning.

Scheduled Pinned Locked Moved
Tuning and tweaking
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  • undefined
    kivlow
    last edited by 15 Dec 2024, 16:58

    Hello,
    a use duet wifi and heated bead 30x30cm with lizard hotend.
    I print with petg.
    bed 70 stC
    hotend 230 stC

    After 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

    undefined 1 Reply Last reply 15 Dec 2024, 17:42 Reply Quote 0
    • undefined
      droftarts administrators @kivlow
      last edited by 15 Dec 2024, 17:42

      @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

      Bed-slinger - Mini5+ WiFi/1LC | RRP Fisher v1 - D2 WiFi | Polargraph - D2 WiFi | TronXY X5S - 6HC/Roto | CNC router - 6HC | Tractus3D T1250 - D2 Eth

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