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A Pixel Purse LED Cube Controlled by a Cisco 3G Modem
- bottled_poe 5y agoPlease animate a self-solving Rubik's Cube.
- tverbeure 5y agoThat’s the kind of great idea that may motivate me enough to spend some more time on this!
- WrtCdEvrydy 5y agoYeah, that was one of the first projects ever.
- mhb 5y agoNot what you're requesting, but: Floating Self-Solving Rubik's Cube https://www.youtube.com/watch?v=2vG-YtRmBSw https://www.youtube.com/watch?v=2vG-YtRmBSw
- isoprophlex 5y agoCool writeup! Also, this is painfully recognizable...: > Even with the most important components in hand, I didn’t actually started building anything: my attention had shifted to other projects. First they recruit 5 co-workers to order 12 panels given Amazon's 2 panels-per-customer limit... only to have attention wander for a few months, haha.
- tverbeure 5y ago3 months between purchasing the goods and starting to work on it is really not bad and definitely below average compared to some of the other stuff on my shelves. One of the best parts of a hobby is the freedom to not do something when you don’t feel like it.
- isoprophlex 5y ago> One of the best parts of a hobby is the freedom to not do something when you don’t feel like it. This is a much more compassionate view to take, you're absolutely right. I shouldn't be so hard on myself for not immediately following through, its a hobby after all..!
- sokoloff 5y agoIndeed. I’ve got a mill in the basement for 5 years waiting on a CNC conversion. (I’ve used it manually in the meantime, but that’s the most physically obvious long-delayed hobby project.)
- yardie 5y agoI still have my 2 mc^2 purses. Well just the parts. I also convinced my coworkers to order additional purses for a future project. They liked them so much they decided to keep them. And they were $8 so it’s not like I couldn’t order more. Than the price shot up to $40-$50 the following week!
- pupdogg 5y agoCool project! Quick question: Is this https://imgur.com/a/V3iRPKf https://imgur.com/a/V3iRPKf an artifact of ghosting effect or refresh rate? How many FPS is the video running at?
- tverbeure 5y agoI think it’s an artifact of desynchronized refresh rates between camera and cube. This is a video of Kbob’s cube, not mine, BTW.
- kbob 5y agoIIRC (I did this in 2018-19), the image updates at ~58 frames per second. There were numerous difficulties in making video of these. The LEDs' duty cycles are actually very short. HUB75 lights at most one row in 32 at any given instant. I shot all my video on an iPhone. The iPhone does who-knows-what processing to its video. It apparently does not scan top-to-bottom, but in bands, and it dynamically changes exposure times based on unknown heuristics. Here are some fails for your amusement. https://imgur.com/a/csSytw2 https://imgur.com/a/csSytw2 Recent gateware changes have increased the LED refresh rate to ~280 Hz, and that has changed and generally reduced video artifacts, but has not eliminated them. I can't tell you exactly what happened on the still you posted.
- tomcam 5y agoYeah the real hack was getting those purses at $8
- jaywalk 5y agoYou can get the same panels off AliExpress for around that price.
- tinus_hn 5y agoWhat is the true value of these panels? Strange how they are on sale for 90% off for a day.
- tverbeure 5y agoThe purses were on sale for on and off between August and November 2019. On AliExpress, they’ve always been around $15. This was probably a sale to reduce inventory? I’ve been told that this kid’s show has been discontinued, so I wonder who’s still be buying this merchandise…