These are chat archives for Makuna/NeoPixelBus

28th
Dec 2018
Debashish Sahu
@debsahu
Dec 28 2018 04:38
@Makuna thanks!
Debashish Sahu
@debsahu
Dec 28 2018 04:59
I was stuck with reading BMP top to bottom, now I can read left to right. Thanks! https://github.com/debsahu/ESP8266-NeoAirPainter
Benik3
@Benik3
Dec 28 2018 11:32
@debsahu Just to the HW setup, the step-up converted is in my opinion waist of energy.
The 5V input on ESP is input to LDO, which converts it down to 3,3V - you can connect it directly to Li-ion (and it will work down to around 2,6V).
The LED strip can also be connected directly to li-ion, because it works without problem down to 3,2V (then the blue LED will start to dimm but it will be still working)...
Michael Miller
@Makuna
Dec 28 2018 17:11
Not all LEDs will work correctly below 3.6v, the newer ones are more tolerant, but I testing will answer most questions.
Benik3
@Benik3
Dec 28 2018 23:07
Interesting. Accidentally I just yesterday found this document about updating WS LEDs. There is e.g. that they are now 3,3V compatible on DI, but the version aren't marked differently:
http://www.world-semi.com/DownLoadFile/141
I tested it on some WS2812 LEDs about 3 years ago and now on WS2813 without problem. But it looks like there is really lot of version of the LED (it can be seen by size of the IC and placement of the IC and LED chips)