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    • J
      John Knoll replied to the thread Program accidentally erased?.
      Sorry for my late reply. My memory of seeing this is that it was the orange light near the button and that it was blinking at around a 1 second cadence. That's about all I can say. Hope that helps narrow it down a little.
    • J
      John Knoll replied to the thread Program accidentally erased?.
      Yeah sorry.
    • J
      John Knoll replied to the thread Program accidentally erased?.
      I remember that it was orange/amber.
    • J
      John Knoll replied to the thread Program accidentally erased?.
      Yes, the program was working. Suddenly it wasn't. Part of his debugging process was to power cycle everything, and after that he noticed the blinking light. It's possible that was happening before the reboot, but I don't know.
    • J
      John Knoll replied to the thread Program accidentally erased?.
      I wasn't there when it happened. The description of what happened from my colleague was that it was working normally, he issued commands to it over the USB serial port, and the Teensy stopped responding. He tried rebooting it and saw the...
    • J
      John Knoll replied to the thread Program accidentally erased?.
      I've been using Teensys since 2017 for all kinds of personal and professional projects, and never saw the program get erased like this. They have all worked very reliable and flawlessly until the unexplained reset the other day. Last summer I...
    • J
      John Knoll replied to the thread Program accidentally erased?.
      There are moments of dead time, but not huge amounts. While it's powered up, it spends probably half of its time running motors. This is a device that controls the speed and position of a number of stepper motors, and those stepper motors...
    • J
      John Knoll replied to the thread Program accidentally erased?.
      This system is turned on to perform a task, and then turned off afterwards. Usually it would be on for about 10 hours at a time. While powered up it was pretty reliable.
    • J
      John Knoll replied to the thread Program accidentally erased?.
      This is the same teensy that's been in the box actually since 2020. It has been updated with newer versions of the software several times, most recently in February, just to add additional features. All told I have 8 different generations of...
    • J
      John Knoll replied to the thread Program accidentally erased?.
      The enclosure in question:
      • 8_axis_RP4_system_small.jpg
    • J
      John Knoll replied to the thread Program accidentally erased?.
      It's in San Francisco. It's in a climate controlled building that doesn't deviate from ~70 degrees F by more than 10 degrees really ever. The odd thing is it's been working fine for years already and just yesterday it's suddenly in default...
    • J
      Yesterday I experienced something odd. Two years ago I built a motor control system using a Teensy 4.1. It's inside a closed cabinet, but communicates with a laptop computer over a serial port to receive commands and send acknowledgments via a...
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