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Faster startup with 24v

Discussion in 'Mods and Upgrades' started by Frank van Gilluwe, Sep 28, 2017.

  1. Frank van Gilluwe

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    I've been making quite a few prints over the last 3-4 days, but often turn off the machine between prints while I tweak a design. Having the much faster start is really nice with 24V. Really does save me time.

    Not too worried about the wire gauge, although I hadn't thought about it before. I figure at 24V the extruder is on for less time for a specific heat than if it was running at 19V. I presume some kind of pulse width modulation is used to maintain the temp. I also suspect the same wires/design/PCB is used for the R2 that uses 24V, but don't know.
     
  2. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Yes, the heater is a PWM signal.
     
  3. OutsourcedGuru

    OutsourcedGuru Active Member

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    That was a great write-up, thanks. I've just ordered this one and will use it during my dual-extruder upgrade. (I've been distracted by numerous projects in the meantime.)
     
  4. OutsourcedGuru

    OutsourcedGuru Active Member

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    You, sir, are brilliant.

    I finally had a chance to buy the 24V adapter and install it on my C2. This thing is now super-fast at bringing the extruder up to temp. Didn't have to tweak any files; it just works as expected. I see no difference in actual temperature and the print job is running perfectly. I may consider running the PID tuning later but I honestly see no reason why I'd want to right now.

    Screen Shot 2018-02-05 at 7.13.15 PM.png
     
  5. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    Yea, I figured Jerry was being a bit over-cautious when he told us the heater cores on the C2 might be rated for 19v :) We installed 24v ones anyway (and will eventually migrate to a 24v brick if it ever dies). Might not be a bad idea for the dual-extruder anyway since heating both is a bit longer.
     
  6. OutsourcedGuru

    OutsourcedGuru Active Member

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    It's not just that, it's the power it pushes. The 19V brick doesn't have the amperage for a dual-extruder plus bed setup. This 24V brick is about as beefy as it gets.
     
  7. mark tomlinson

    mark tomlinson ༼ つ ◕_ ◕ ༽つ
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    I imagine not, but it does handle two extruders alone OK.
     

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