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Hardware: vifino's Easterhegg 2018 64x64 matrix
Adrian Pistol edited this page Apr 3, 2018
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- Decent size, able to be carried around by the neck.
- 64x64 pixels, full 24 bit color.
- Not too ridiculous power draw.
- Decent price, below 150 euros.
- Be done with it in 3 days. Software and Hardware-wise. Shipping included.
- Raspberry Pi 2/3
- Amazon if you don't have one laying around already. I did.
- Multicore is important for this.
- Should be available for a decent price. Used a Pi 2 in this case.
- 2 64x32 P5 LED matrices
- Decently cheap had on Amazon at the time, which was important, considering I had just 3 days.
- Very cheap on AliExpress. Long shipping times...
- Adafruit RGB Matrix HAT + RTC for Raspberry Pi
- You can get one on Amazon, too.
- Some generic stepdown converter to 5V 10A.
- If you want to be safe, you can get bigger ones, as the panel can draw up to 14A on full white, but given that there shouldn't be a full white thing there and if it is, it'll be for very short time, it will work perfectly fine.
- ~3 3300uf caps
- You definitly want a cap on each panel, add another for good measure. It'll help keep the brightness without flickering and will stop the Pi from browing out.
- A ~100W power source feeding into the buck.
- Something like this PSU on Amazon is what I use stationary, I also use the same for my TS100 soldering iron. It's quite good.
- A BIG LiPo works as well, I use 5S 5Ah LiPos for it. They run the matrix for hours! 6 hours or so for sure.
- XT60 and XT30 plugs.
- You can find them on BangGood, Amazon or even Conrad. They are amazing plugs, expensive but well worth it in my opinion.
- Use the XT30's for the power wires to the Pi and Matrix panels, another XT30 to the buck's 5V out.
- Use an XT60 on the buck's input.
- Male side to power source, female to consumer.
TODO.
Basically, install Raspbian, download hzeller's library, compile it, compile sled with make PLATFORM=RPI_HUB75, have fun.