nibennett

Sounds like in series is the way to go. Wire them all in order as per original plan, then define as different series through the led number.

I was right. managed to get the led's running on it now as well. when i first took the cables out of the holder had them the opposite way so 5v was getting ground and ground was trying to supply power in the instant till i realised wrong and turned it off. https://ibb.co/grYm0o Now to work on the software effects for the lighting on it and the 3x LED strips that will be connected once its all in the enclosure Just wondering can i have a different effect on the fan to the other LED strips if i wire them to seperate data outputs on the arduino or limited to the one effect across all the leds in my ws2812b strip ? around 50 led's in the 3 strips, (18, 18, 14) and 12 in the hd120 for the fan. I.e. if they can be separate could control all 4 strips to have different things on them. (Or filament bay as one thing, the 2 strips in the printer section another thing and the fan a 3rd different thing.) I know i do still have 4 potential outputs on the arduino nano that using that i can run the lights data outputs from.

I've got a prusa i3 mk3. Built a custom enclosure and got an arduino to power the enclosure. https://www.thingiverse.com/thing:2862044 building these electronics to go in the enclosure. https://ibb.co/kTb8D8 https://ibb.co/nzjjmT Thats the enclosure and the motherboard that got the arduino and everything plugged into for the fan, (will also have a bunch of WS2812B led strips attached to the LED outputs. The plan was to have those in order with it going from the data out on 1 strip to the data in on the next and with the fan either first or last in the strip. The motherboard has a 3A 5V convertor and I've got another 3A 5V converter that will run to feed the second half of the lights. The motherboard has 4 ports for the PWM of the fan and i got that going but seemed to be limited to 500rpm so will have to look into the software there to see if thats currently limiting it. (Worked this out as it was just supplying 5v not the 12v since was plugged in via usb for the arduino not the 12v adaptor for the whole thing, so now can control it between 700-1700rpm using the touch screen.) Can I have the HD120 LED's run by just 3 pins on the motherboard ? (5V Power, data from motherboard to fan and ground) From my understanding the Data out on the fan would be used to connect it to the next led if i added more on the end of it right ?

It appears the wiring on the HD120 is different now. the one i just got to use for my 3d printer enclosure (controlled by an arduino) has 4 cables on the power for the fan and 4 for the led's rather than the 3 for power, 4 for LEDs. any idea what the pinout for this would be ? (or the way to work it out)

It appears they have changed something with the HD120 now. The one i purchased has both the cables being 4 pin. (Power and LED ones) any idea what the pin out for this would be ? (trying to connect it to an arduino for use in my 3d printer enclosure)