Wishing You a Very Random Christmas
Being the holiday season I decided to post this article from the December 2014 issue of Nuts & Volts magazine www.nutsvolts.com that I wrote about an outdoor Christmas Tree display I built and erect every holiday season. I had built an outdoor tree of light strings in a tree formation but was not pleased with the static display. So I built a microcontroller control box that will change the display in a random manner. At each power up, the seed for the random number generator is changed so that patterns are different for each operation.
I have posted here the article for your viewing pleasure and the C source code in GitHub. From the article and source code you can build your own version. The C program was used with an old compiler so if you compile with the current Microchip 8 bit compiler there will be errors thrown but they should be easily resolved. I also have posted here the original photos used for the article with an additional video of the 'Christmas Tree' in operation.
The right figure is a drawing of the 'tree' as viewed from the top, eight sets of LED lights result in 16 legs.
The left figure is a drawing of the side view of the 'tree'. The legs are the LED light strings meeting at
the top of an 8' metal pole.
Sometimes I look for interesting information, reviews, or expert commentary because someone drops a link in a group—they are genuinely engaging, but sometimes you read through an article and find such useful links neatly woven right inside the text. For example, I recently came across a great overview on platforms like https://www.politolog.net.ua/ and https://deribasovskaya.net/
While reading about your re-seeding trick on https://paysafecasinoschweiz.com, I couldn't help but see the same principle behind random outcomes in slots—fresh entropy makes every experience feel unique. That's a clever way to keep a static tree display lively, and the old compiler quirks make it feel even more hands-on.
Looking down at this watch, you see so many shapes. There's a round bezel over an octagonal frame. Then the case itself is octagonal, but sort of built into a square platform. So link it sits on the wrist as link a square, but it is not a square watch. It's an octagonal watch on link a square platform built in thin, delicate layers.
This marvel is made possible by the caliber MHUB1100.H3. This self-winding movement link delivers a power reserve of link some 42 hours. Each piece is complemented by a black rubber and calfskin strap featuring printed colored link stripes.