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smeezekitty wrote:Generally, it is a good idea to use a transistor to drive a power MOSFET gate because they are quite capacitive. It is hard on the MCU pin and limits how fast the MOSFET can turn on and off (making it get hotter).
Those defects on the disk look like pretty big gaps. although maybe the camera makes it look like it is worse than it is.
Harry Dalek wrote:OH a hint on the IR thing , remember natural light has IR dam that SUN ! so you will find it will effect your sensor well it does on my reflective type
A reflective type you have a print encoder reflect off to make the pulse as i tend to use .
Might be missing something but i do recall many a time more or less natural light causing speed control problems.
Another thing your disk is shiny another problem it may be black but it reflects light like a black mirror ...i used to spray paint them with matt Black paint .
smeezekitty wrote:Generally, it is a good idea to use a transistor to drive a power MOSFET gate because they are quite capacitive. It is hard on the MCU pin and limits how fast the MOSFET can turn on and off (making it get hotter).
FlyMario wrote:smeezekitty wrote:Generally, it is a good idea to use a transistor to drive a power MOSFET gate because they are quite capacitive. It is hard on the MCU pin and limits how fast the MOSFET can turn on and off (making it get hotter).
Since this is a logic level Mosfet do you really think a transistor would be that necessary? I keep trying to find a good example of this and finding such mixed information.
guys.
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