I wanted to make an ambient backlight project for my monitor with programmable LED strips, but I've ran into a really irritating problem:
Apparently the FastLED signal data is sent, but the LEDS dont light up unless I connect the ground probe of my (turned off) multimeter to the signal wire.
I connected my Adruino Pro Micro directly to USB, D+ & D- directly to the Atmega, +5V to the RAW pin and used common ground for the Microcontroller and WS2812 LED strip.
Shorting the signal pin to the common ground yields no results, pull-down resistors of various sizes for the data wire didn't work either, different USB power supplies also didnt make a difference as well as changing the arduino pins.
I'm guessing there is a pretty simple solution to this, but I just cant find it :o
I've used an arduino nano before and everything worked flawlessly, except I couldnt directly solder the USB wires to it.
Heres a video showing the problem:
Please help :cold_sweat: