Ender 3 silent pcb fan

thingiverse

Absolutely silent pcb fan (18db) for the Ender 3 First you need following things: the fan and this mini dc/dc converter search on amazon or ebay for voltage converter board: DC DC Buck Converter 3.3V 5V 9V 12V search on amazon or ebay for the silent fan (18db): Xilence XPF92.R.PWM solder the input on the buck converter (check correct polarity and input side) connect it directly to the 24V on the board (do not use the old fan connector, bc. this starts delayed) adjust the output of the board with a little screwdriver to 6-13V (12V is ok bc its realy silent) make some room for the converter board on the fan beneath the cable output by grinding cut the yellow wire and solder the red and black to the converter (check correct polarity) place the little converter beneath the fan and insert the fan to the printed plate and reconnect the converter input to the ender 3 pcb 24V (check polarity) mount it (there is enough place for the abl sensor board) 2 x Xilence fans + 1 x noctua hotend fan = whispering ender 3 https://youtu.be/ZkhkEo8b4N0