[quote=“jeafke”]The heater cartridges have a constant minus and the thermistors have a constant positive pole. So I just hooked it to those with a 22 or 10 ohm can’t remember exactly resistor in series. So when the psu turns on the fan turns on. I just hooked the 40 watt heaters without anything extra up to a homemade new pcb with decent terminals. And a extra terminal for the constant on fan. (the stock ones could melt due a higher current) Only did a pid tuning and changed those values in the firmware.
thanks for the quick headsup
i took a pice of paper and tryed to remenber what i learned back in School, if my calculations are right the Fan of the E3d V6 has 12V and 0.15A so the resistor schould take 3V/0.15A so basicly like you said 22 Ohm would be the next best alternativ. then just solder it in series with the fan and connect the one with the resistor to the + connector (pwr - red in your Picture) and the other one to the minus connector (pwr - blue in the schematics) and do the same with the second fan and they should automaticly start when i plugin the Printer right ?
and for the heater cartridges you didnt use any resistor because they are already 12v on the Mainboard and you only used a custom pcb because you think the higher Current could kill the connectors on the Extruder board right ?
i hope i know have everything right and can prepare for when the hotend will be shipped.
where did you get your connector for the heater cartridges ? eBay ? do you have a Picture of your assembly im not completly sure yet what Kind of connector i wanna use.
thanks again very much for all the help an clarifications even thoug i learned all that stuff in School its already 5-6 years ago and havent used it really before getting a 3d Printer
has someone tryed to use something like this thingiverse.com/thing:839620 to gain back the lost mm on the x-axis ? maybe with this fanduct we could get rid of the small fan all together and not loose anything on the axes ?