[|kbn|]

I assume the extra black wire is the center of the Y.

I used my multimeter to check resistances,
The black to any solder points is about 1ohm.
I measure 2.3R between any red green or yellow windings.
I intend to stay with Y for now, but if I do change to delta I would need to modify the pcb further and diconnect all the center traces.


For the speed controler, what type of signal does it require? I assume either 5v pulse or 0-5v voltage input?

for RC speed controllers, does it matter if the motor is connected in Y or delta.. is it even possible to reuse the original laing controler if the transitors/fets were upgraded?
I see microchip released schematics and code for a speed controller made with a pic, so I may build that instead depending on how complicated it is.


One thing Im interested to know, since most pc fans are also brushless could you do the same modification to them as your pump?
ive looked at one fan, apppears to be brushless but the design is confusing me. has 4 coils with 2 different colour windings on each.
The only component appears to be a hall effect sensor and there are no brushes.. I thought all brushless fans required more components for the switching.