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  • link2_thepast commented on link2_thepast's instructable Remote Rocket Igniter2 months ago
    Remote Rocket Igniter

    The transmitter here doesn't trigger the launch system until the countdown is finished, so you can just flip the power switch off to stop the countdown.You're right, though, the countdown is pretty impractical. I just put it in for fun. I am working on a revised version that functions more like a traditional Estes launcher, just wireless.

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  • link2_thepast commented on link2_thepast's instructable Raspberry Pi 4x4x4 LED Cube4 months ago
    Raspberry Pi 4x4x4 LED Cube

    Wiring it directly shouldn't be too bad. Just connect the sixteen column pins to sixteen GPIO pins of your choice (through resistors, of course) on the Raspberry Pi. You will have to edit the code, though, because it's designed for a shift register-style setup.Note that some GPIO pins on the Raspberry Pi have other functions besides simple I/O, so you may want to look at a chart to decide which pins to use.

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  • link2_thepast commented on link2_thepast's instructable Remote Rocket Igniter4 months ago
    Remote Rocket Igniter

    Ah, good point. Maybe something like a momentary key switch would be in order.

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  • link2_thepast commented on link2_thepast's instructable Remote Rocket Igniter4 months ago
    Remote Rocket Igniter

    Yeah, not my best launch.

    You are absolutely right. The current code requires six bytes of pairing data (or whatever it's actually called) and one byte of informational data to launch. I haven't had any problems with misfiring since I added these requirements.If you like, you could edit the code to add more pairing bytes. It will take a bit longer to transmit, but there is a lower chance of a random ignition.

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  • link2_thepast entered Remote Rocket Igniter in the Space Contest 2016 contest 4 months ago
  • link2_thepast commented on link2_thepast's instructable Raspberry Pi 4x4x4 LED Cube4 months ago
    Raspberry Pi 4x4x4 LED Cube

    I had a problem similar to this when I was initially writing the code. I was clearing the shift registers slightly too late, so their contents were displayed on the cube for just a moment, resulting in a ghosting effect like what you describe. Maybe your shift register timing is off; after all, you have four times as much data to shift out, it likely takes more time to work.I'd suggest adding very short sleep() functions to the multiplex() function in various places and seeing what effect they have on the ghosting... maybe that will give you an idea of where the problem is. Other than that, I'm not really sure what the problem could be.

    Great, it's cool that you got this to work as an 8x8x8 LED cube!

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  • link2_thepast commented on link2_thepast's instructable Raspberry Pi 4x4x4 LED Cube5 months ago
    Raspberry Pi 4x4x4 LED Cube

    Okay, here are annotated versions of the code files. I tried to link directly to them, but was forced to link to a zipped file instead. Hopefully this works, but if it doesn't, let me know.

    Okay, here are annotated versions of the LEDcubeCore.py and LEDcube.py files. I put my suggestions as comments in the files themselves.

    Okay, here are annotated versions of the LEDCubeCore.py and LEDcube.py files. I put comments with my suggestions in the files themselves. Hopefully this helps!

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