BLINKS is a VU meter for eurorack with 24 RGB leds per channel, function is pretty easy, it has 2 inputs, one for each led column (no output btw).
PATT button changes the led pattern ( 6 patterns to choose ).
SENS button changes the input sensitivity, cycling in 7 steps.
Long pressing the PATT button enters the color scheme selection.
Long pressing SENS button enters the brightness adjustment. Most probably you'll prefer the lowest setting.
The module has a 5v regulator in case you don't have 5v in you eurorack PSU. A jumper in the back select if the led board would be powered by the 5v rail or the internal regulator (which works with the +12v rail)
Up to 3 stereo signals can be connected to a buffered input using the rear headers.
Easy DIY with only a few components, the led board is already assembled.