https://github.com/tophercantrell/jack2015

Jack-o-lantern for 2015
https://github.com/tophercantrell/jack2015

halloween jack-olantern neopixels propeller-spin

Last synced: 3 months ago
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Jack-o-lantern for 2015

• Host: GitHub
• URL: https://github.com/tophercantrell/jack2015
• Owner: topherCantrell
• Created: 2015-10-27T00:29:11.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2019-12-22T18:38:46.000Z (over 6 years ago)
• Last Synced: 2025-01-18T05:29:56.375Z (over 1 year ago)
• Topics: halloween, jack-olantern, neopixels, propeller-spin
• Language: Propeller Spin
• Size: 8.72 MB
• Stars: 0
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# Jack-o-Lantern 2015

I have four bright neo-pixel plates and a couple of smaller LED grids. I might

as well put them to work in a Jack-O-Lantern this year.

### As seen on Youtube

[![](art/youtube.jpg)](https://www.youtube.com/) 


https://www.youtube.com/watch?v=z5ygn6gWkBM&t=12s

LED Grid:

[http://www.adafruit.com/product/902](http://www.adafruit.com/product/902)

NeoPixel Plate:

[http://www.adafruit.com/products/1487](http://www.adafruit.com/products/1487)

Here is the hardware and pumpkin:

![](art/IMG_0288.JPG)

The plan is to use the two smaller displays for eyes. Three of the plates will make a mouth. I'll offset them to better allow a smile. I'll use the center stripe of the fourth for a nose.

I already have the propeller software going. I was planning a Circuit Cellar article (of course) on the grid mapping. This project will be a good addition to the article.

Here is another project using LED grids for eyes:

[https://www.youtube.com/watch?v=e3O-ti5n6jw](https://www.youtube.com/watch?v=e3O-ti5n6jw)

## Schematics

![](art/JackSchematics.png)

## The Jack Language

I create a DSL (domain specific language) for the project. I wrote a compiler for it in Java. The compiler outputs Propeller DAT sections for compiling into the propeller. Have a look at "nose.txt" and "mouth.txt" to see the language in action. The "Jack2015.spin" contains the interpreter and the compiled scripts.

The code launches 3 copies of the Jack interpreter -- one for the eyes, one for the nose, and one for the mouth. They run independently of one another.

## Photos

![](art/IMG_0291.JPG)

![](art/IMG_0299.JPG)