I have acquired some of these and I for the life of me get then up and running! I’m not even sure if they are blown or not.
Clock and data, so they can only be lpd8806, sm16716 or more likely ws2801. I have them connected to a teensy on its own 12v power line, gnds connected.
Ideas?
Possible that they might be LPD6803 too - if so, the library doesn’t support them anymore 
Where did you get these? Did they really black out the top of the led chip?
(Hmmm, wonder if it’s possible that they’re one of the differential manchester encoded chips? Like the CYT3000 - which I definitely don’t support yet, but have some notes on, I may even have some samples here…)
they were bought on aliexpress as a test run, 25 leds to see if we could feasibly recreate one of the pieces from sensation white.
they came with a dmx-spi decoder (chinas best) which didn’t work from day one!
although, the chap who bought them couldn’t find the item in his history and so I’ve just been trying all libraries to see which one fits!
ive not had a single flash out of anything!!
also, to add to the mystery, the chip is completely unreadable and the entire innards are covered in resin!
If you can find the aliexpress page for them, I can see what I can do with them.
The CYT3000’s were popular in that form factor for a while, though. I have a fear that may be what you have
(Somewhere, I have some notes on abusing the SPI engine to drive the CYT3000, but haven’t implemented it yet)
ok, so I’ve gone back to fast_spi the original version (I’m a hoarder!) and although i haven’t set the clock pin, i dropped the testleds and leds 2, 3 and 4 (out of 16) have a green glow… thats using the lpd6803 chipset
at least i have a starting point now!!
after fighting with this for an hour or so, i have come to a new conclusion… none of the current libraries work with this, and the best result i have had is when i accidentally tapped the teensy usb cable against the firewire port on my mac… which leads me to believe that the current lights i have lit are from an accidental grounding.
i doubt this is useful in my endeavour, but the blue light is quite pretty.
after finding the message, i believe these are ws2801, but why they don’t work is just beyond!
If they’re ws2801’s, are you using hardware or software SPI - and what platform are you running on?
erm, i think hardware spi, and teensy 3.0. pins 11 and 13 for data and clock respectively
just using the simplest setup, teensy, fastspi, thats it.
Main reason I asked is because on the teensy 3, the bit-bang’d spi runs too fast for the WS2801 - and my tricks in the bit-bang code to slow things down to expected speeds are out of date and not calibrated.
if it helps, i just ran 12v 3amp through the teensy 3.0, so now I’m using a teensy 2.0 in a puff of smoke…
not the best day of electronics I’ve had.
Bummer. I’ve burned a few things while learning.
