Hi
Is it save to connect an external Mosfet (a small board) directly to any other pins on Ramps then D8 - D10?
I'm asking because my D8 port broke while the hotend was connected directly to it. My hotbed is connected to an external Mosfet on D10 and I have an additional external Mosfet in spare. So I could use it for the hotend but I'm not sure if other pins can handle it. As a quick fix I connected the hotend to D9, but this way I had to disconnect the fan.
Another possibility would be to replace the Mosfet on D8, but I would only try this if there is no simpler way to operate the external Mosfet. Btw. D8 isn't totally broken. However it needs a very long time to power up. The corresponding LED starts to glimm after 20 seconds and then it gets brighter and brighter, until it reaches full brightness sometime later. Currently I can still use D8 for powering the cooling fan in a kind of imprecisely way.
Is it save to connect an external Mosfet (a small board) directly to any other pins on Ramps then D8 - D10?
I'm asking because my D8 port broke while the hotend was connected directly to it. My hotbed is connected to an external Mosfet on D10 and I have an additional external Mosfet in spare. So I could use it for the hotend but I'm not sure if other pins can handle it. As a quick fix I connected the hotend to D9, but this way I had to disconnect the fan.
Another possibility would be to replace the Mosfet on D8, but I would only try this if there is no simpler way to operate the external Mosfet. Btw. D8 isn't totally broken. However it needs a very long time to power up. The corresponding LED starts to glimm after 20 seconds and then it gets brighter and brighter, until it reaches full brightness sometime later. Currently I can still use D8 for powering the cooling fan in a kind of imprecisely way.