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Type: Posts; User: skidd

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    My Teensy 3.2 POV Clock Project

    I thought I'd share the outcome of my POV clock project.

    I naively thought a little 8bit Arduino Nano would have had enough power for my plans. Wow, was I wrong. This teensy 3.2 does the job,...
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    In hind site.. I should have gone with the...

    In hind site.. I should have gone with the Teeny3.5 for sure. To be honest, I didn't realize the amount of CPU I was going to need until I got well into the software. I have this little 3.2...
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    Thanks for that.. I might try and use some of...

    Thanks for that.. I might try and use some of that to allow for as much CPU time on the rendering thread as I can muster.
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    Floats... don't use 'em!

    Just wanted to convey the outcome of a 2 week long battle to find a bug in my project.

    Cliff Notes: Don't underestimate the CPU cost of doing even simple floating point operations.

    I'm building...
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    I just wanted to say thanks for this library. ...

    I just wanted to say thanks for this library. It's solved a problem with my POV wheel project. You see, It's spinning about 900rpm (planning to go faster), and has 32 APA102 leds divided up into...
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    If you're using pins 2 and 3, then FastLED is...

    If you're using pins 2 and 3, then FastLED is being forced into software SPI. No good for fast data rates.

    According to the diagram, these are the hardware SPI pins:
    Data (0, 7, 11, 28)
    Clock...
  7. Another Update..solved the random garbled image...

    Another Update..solved the random garbled image issue too.
    Turned out to be noise on my hall effect sensor. the internal teensy pull-up wasn't up to the task (I think I read it's a 33k). a 6.8K...
  8. Might have been pretty interesting to try put my...

    Might have been pretty interesting to try put my scope on the 5v and 3.3v rails.. since it's all spinning at almost 1000 RPM.

    It's funny you mention chasing pattern issues in the logic, when...
  9. Update: I won't lie, desoldering the teensy...

    Update:

    I won't lie, desoldering the teensy was not something I was looking forward to doing.. but. I had no choice, it wasn't working.
    Yeah.. I soldered directly to where it's installed instead...
  10. did I brick my teensy3? usb connects, then disconnects almost right away

    I'm wondering.. did I somehow manage to kill my Teensy3.2?

    I've been working with this thing for a few months now.. with good success. I'm making a POV clock with 32 APA102 leds (DotStars).
    I'm...
  11. Update.. found the answer. I wasn't really keen...

    Update.. found the answer.
    I wasn't really keen on de-soldering the crystal to try another... but.. what ever.. had to find out if that was the cause.
    Sure enough it was. The new crystal soldered...
  12. Teensy 3.2 + RTC question. keep time when off?

    I have a question about the built in RTC feature of the Teensy 3.2.
    Is it supposed to maintain the time when not powered up?
    I soldered in a 32.768 crystal, and attached a 2025 battery to vbat and...
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