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Geeetech3D / Smartto-Eclipse

3D printer firmware and hardware of for stm32
GNU General Public License v2.0
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HARDWARE circuit_diagram/Rostock301/ #11

Closed kaktusus closed 6 years ago

kaktusus commented 6 years ago

Due to a design error with regard to the comparator, I suggest not to mount the following parts: JP1 Q4, Q1, IC5 And the related passive elements.

It is often the case that an accidental short-circuit of the fan leads to damage to the mosfet transistor (Q4). This one gets punctures and supplies the fans with 24V DC supply voltage. Also applies to a board built on µC AVR. I had such a case myself, and I read about similar things in the forum.

Kind regards. kaktus

Geeetech3D commented 6 years ago

@kaktusus that's good for us,because we are redesigning this hardware.

kaktusus commented 6 years ago

I would be happy to take part in the design of a new controller.