Ws2811 12v strips very sensitive to overvoltage ?
Yesterday i had a problem that those strips didn’t went to Black when instructed… (see earlier post).
Rootcause was the 12v batterypack giving almost 13v.
Does somebody has a suggestion for small and real cheap dc-dc converter 12v output ? Does it exist in chipformat ?
WS2811’s seem relatively intolerant of slightly-over-voltage supply, but they are relatively tolerant of slightly under-voltage supply.
So depending on $everything, you could just put a diode in series with the power to the strip, and that would drop about 0.7 volts. Your 12.94 would drop down to 12.24, which might be OK. You could also use two diodes, and drop to 11.54, which would definitely work.
To be clear: this is the super-low-tech way to do this. A voltage regulator or converter might be more appropriate.
Thanks @Mark_Kriegsman . Great idea… simple solution I still can implement this night, so I still can use the for the halloween mtb night ride decorations… you ‘saved my day’ but now I have a long night to go 
I’m far from an expert here; make sure the diode(s) are rates for the amperage you’ll be putting through them.
50 pixels with 2 bouncingball effect => will be max 0.5 amps I guess. And ofcourse I can use your great current limitation functions
The diode trick is doing it … tnx a lot @Mark_Kriegsman for this McGyver idea (… how to solve an issue with the means you have nearby)
And with 7 diodes my 14v4 batterypack packs do the job. After steeling the ones from my sons arduino starterkit I’m out of diodes…but a least I can have 2 more decorations along the track…
Also if you get the rating of the diode about right, the diode will also act as a fuse to protect the cabling and the battery in the event of a short. So keep the diode at the battery pack end, not the circuit end of the cable!