RE Oatley Kits
Posted by
petermic@p...
on 2000-05-20 19:44:26 UTC
You've got a pretty good run down from previous reply but just to add
the KIT number is K142 if you are looking it up.
YEAH AND OUR DOLLAR IS REALLY LOW IN NZ.
HEATSINKING! quote "the mosfets will only be warm with motor currents
of up to 2 amps, as with motors recovered from the printer" (WRONG!!)
"These mosfets will handle up 100v @14A but heatsinks are required."
Yep I got caught out too, and very quickly installed heatsinks.
I notice that the KCam has a motor enable output and am tempted to
make a relay driver to disconnect the supply to the Mosfet stage.
(the mosfet is driven by a seperate PSU for the steppers).
I have a question. If I remove the supply, then re-enable the supply
will the stepper jump a step or will it stay in the same position?
regards
Peter.
the KIT number is K142 if you are looking it up.
YEAH AND OUR DOLLAR IS REALLY LOW IN NZ.
HEATSINKING! quote "the mosfets will only be warm with motor currents
of up to 2 amps, as with motors recovered from the printer" (WRONG!!)
"These mosfets will handle up 100v @14A but heatsinks are required."
Yep I got caught out too, and very quickly installed heatsinks.
I notice that the KCam has a motor enable output and am tempted to
make a relay driver to disconnect the supply to the Mosfet stage.
(the mosfet is driven by a seperate PSU for the steppers).
I have a question. If I remove the supply, then re-enable the supply
will the stepper jump a step or will it stay in the same position?
regards
Peter.