standupmaths/xmastree2020

My 500 LED xmas tree

xmastree2020's Issues

can't install neopixel

Following the instructions at https://learn.adafruit.com/neopixels-on-raspberry-pi/python-usage on how to install the
neopixel library, I get this:

Collecting sysv-ipc (from Adafruit-Blinka->adafruit-circuitpython-neopixel)
  Using cached https://files.pythonhosted.org/packages/0c/d7/5d2f861155e9749f981e6c58f2a482d3ab458bf8c35ae24d4b4d5899ebf9/sysv_ipc-1.1.0.tar.gz
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-build-p029qfz7/sysv-ipc/setup.py", line 11, in <module>
        import prober
      File "/tmp/pip-build-p029qfz7/sysv-ipc/prober.py", line 137
        d["SYSV_IPC_VERSION"] = f'"{version}"'
                                             ^
    SyntaxError: invalid syntax

I checked that I have python3 installed.

The second command doesn't work either:

pi@kano4:~/xmastree2020-main $ sudo python3 -m pip install --force-reinstall adafruit-blinka
Collecting adafruit-blinka
  Using cached https://www.piwheels.org/simple/adafruit-blinka/Adafruit_Blinka-5.13.1-py3-none-any.whl
Collecting sysv-ipc (from adafruit-blinka)
  Using cached https://files.pythonhosted.org/packages/0c/d7/5d2f861155e9749f981e6c58f2a482d3ab458bf8c35ae24d4b4d5899ebf9/sysv_ipc-1.1.0.tar.gz
    Complete output from command python setup.py egg_info:
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/tmp/pip-build-5yeeu738/sysv-ipc/setup.py", line 11, in <module>
        import prober
      File "/tmp/pip-build-5yeeu738/sysv-ipc/prober.py", line 137
        d["SYSV_IPC_VERSION"] = f'"{version}"'
                                             ^
    SyntaxError: invalid syntax

Ignoring the error and trying to run anyway didn't work...

pi@kano4:~/xmastree2020-main $ python3 xmaslights-spin.py
Traceback (most recent call last):
  File "xmaslights-spin.py", line 144, in <module>
    xmaslight()
  File "xmaslights-spin.py", line 9, in xmaslight
    import neopixel
ImportError: No module named 'neopixel'
pi@kano4:~/xmastree2020-main $ python xmaslights-spin.py
Traceback (most recent call last):
  File "xmaslights-spin.py", line 144, in <module>
    xmaslight()
  File "xmaslights-spin.py", line 43, in xmaslight
    pixels = neopixel.NeoPixel(board.D18, PIXEL_COUNT, auto_write=False)
AttributeError: 'module' object has no attribute 'NeoPixel'

Any suggestions what to do next? (btw python newbie, so can I ask you to spell it out and not assume I know much about how python works)

thanks

Graham

Code not functional

Some mathematicians purists could argue that the code in not functional!

There are many animations that can (and should) be expressed as a function of 4d space+time.
Thus colors of pixels are just a samples of this function at the LED coordinate t the time of the animation c_i = f(X_i).

How to map the LEDs

So in the video you say there is much better ways to track the LEDs. Fun Fact, there is not. is there any way we can grab a copy of your tracking code and a list of dependency's. Not after a full tutorial just enough that I can stumble uphill instead of downhill.

P.S. Love your work.

use gphoto for calibration

gphoto is a great CLI tool for controlling DSLRs. It currently has support for around 2700 models according to their website.

This could be used for the first calibration/initialisation instead of the webcam potentially getting better results because:

• higher resolution
• fixed on a trypod
• clearer image by setting aperture, speed and ISO manually

I wated to implement this in the holidays but there was too much stuff regarding university.
I might have a look another time but thought I might share this idea

EDIT: sadly it seems like the part calculating the coordinates and exporting them to the coordinates.txt is not in this repo :(

Lights' mapping

Matt,

Did you post the code to map a tree to the coordinates?

Sergey