For a disco party of a friend i had turn a room into a disco with a lot of led's. One of them was fastled running on little parts of ledstrip (4leds/pease). It was only for 1 Month.
Now they want it permanent.
I have 10 light's of 4 led's, running of a D1 mini. Fastled runs animation on a strip of 10 light's and the data is stretched over 40 led's so they have the same color. But if i set everything on gold some led's will blink diferent color's and brightnes.
I use a level shift register (3.3 to 5v)
It will react to sound over wifi (mqtt) and with a IR,
What is the problem in the data line and how can i fix this?
If you are using a level shift module designed for i2c bus, these do do work reliably for ws2812, assuming that is the type of led strip you are using (you forgot to say). They do not respond fast enough for the signals used by ws2812. I would recommend a 74hc14 or 74hct14 chip for your level shifter.
Yes, those level shifters are the unsuitable type I was describing. I also tried to use them for this purpose once, and found that they worked ok unless I put my finger or other object close to or touching the circuit, then the LEDs became random. This indicated that the circuit was on the edge of not working at all. I examined the waveform of the data output of the level shifter compared to the input data waveform with an oscilloscope. I could see that the waveform was badly affected, changing from a clean square-edged signal to an uneven sawtooth waveform. I then replaced the shifter module with a 74hc14 and the output waveform was clean with square edges. No more random LEDs, even if I touched the circuit.
