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Interface shutting off mid-job, after years of faithful service

Discussion in 'Interfaces' started by Banjopete, Mar 10, 2025 at 4:46 PM.

  1. Banjopete

    Banjopete Well-Known
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    hi folks, I'm stumped, and am wondering if my interface (or my blackbox, or PS) has tapped out and said I've had enough?

    Like the title says, it worked just great from the start. I had one replaced due to the faulty usb on the early batches but it's been awesome since. In a recent job it just shut off, went black, and reset mid-job. I checked the electrical connections, thinking maybe all the jobs had shaken something loose but couldn't find it. Wiggling wires didn't reproduce any errors. I've repeated the errors running the same job, from the same program, haven't tested with another job. I'm years behind on firmware updates, can't imagine that's the issue, but will try updates.

    After seeing other threads indicating interface shutoff is likely a power issue I checked power levels. My power supply is an openbuilds unit, it's firing out 24v (23.9ish volts) steady, without a hint of anything else to the blackbox. Out of the black box I'm getting constant 4.8v to the interface.

    I had emi issues years ago but dealt with that, the error/reset happens with and without the vacuum running too. I'm running a dewalt router as well.

    When the reset happens the blackbox is running. I suspected maybe it was crapping out but power is steady and it never turns off from anything I can see (fan running, voltage steady).

    Any ideas? openbuilds heroes?
     
  2. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    David the swarfer likes this.
  3. Banjopete

    Banjopete Well-Known
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    Thanks Peter, I was testing the power output from the blackbox at the interace side, and the power never wavered when the cord was jiggled or twisted so I don't think that's it but I will check this as I should still have a duplicate cable to test with.

    I'll run through it all once more when the firmware is updated, and will reload the job just on the off-chance it's something in there. Beyond that I don't quite know where to start next?

    I suppose the logical next step is to run a program through control, and see if I have any issues then at least I'll know it's the interface. If the interface is the culprit can I suspect that internally the ~5v power it needs isn't staying/getting to the circuit it needs to be since it's always resetting?
     
  4. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
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    Apart from the cable, and if the voltage is stable, only other cause might just be that its on its last legs, and time for a fresh new one :) (it been reworked through the years too)

    4.8V is in spec (shouldn't drop out until it drops to around 4.4v) but you can see if you can power it externally via USB using a USB-C cable and spare phone charger as well to see if it stays up with additional power

    Yes solid idea, just to rule out the BlackBox (multimeter might miss short voltage dips, they tend to "average")

    Unlikely to help for the particular issue https://github.com/OpenBuilds/firmware/blob/main/interface/CHANGELOG.txt
     

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