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Ultimaker's_v1.5.7 ???

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Posted · Ultimaker's_v1.5.7 ???

I think it's just a minor layout change. I'll check when I'll get in the office on monday. And the files will be made public, but as usually they are a bit delayed.

For most things the 1.5.6 schematics should do fine.

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Posted · Ultimaker's_v1.5.7 ???

Ok, you can use the 1.5.6 schematics. The changes are at the ARDPWR jumper, which should be replaced by an Diode (however, the boards we have here still show a jumper, could be a mistake by production)

Other then that, a few traces have been made wider so there are less faulty boards. But schematic and layout wise it's the same as 1.5.6.

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Posted · Ultimaker's_v1.5.7 ???

Not yet. But use the 1.5.6 as reference, they are virtually the same.

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Posted · Ultimaker's_v1.5.7 ???

I'm still pissed that after being promised a v1.5.7 board with my order I got a shoddy, poorly assembled v1.5.6. Flux left on the board, solder spatter, half soddered components, and improperly bent components. I hope you make the 1.5.7 PCB files available soon so I can assemble a new board myself.

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Posted · Ultimaker's_v1.5.7 ???

If you were promised a 1.5.7 board and didn't get one then you shouldn't be making your own, Ultimaker should fix the mistake.

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Posted · Ultimaker's_v1.5.7 ???
Ok, you can use the 1.5.6 schematics. The changes are at the ARDPWR jumper, which should be replaced by an Diode (however, the boards we have here still show a jumper, could be a mistake by production)

Other then that, a few traces have been made wider so there are less faulty boards. But schematic and layout wise it's the same as 1.5.6.

These changes I have not seen!

Compared with the previous version only changed the number of connectors for fans (3 to 1) and fan power. Photo as an attachment.

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Posted · Ultimaker's_v1.5.7 ???

I think I see why the cooling fans are burning up, they probably don't like being run at 19V. Any reason not to add a 70 ohm resistor to lower fan's input to 12V ?

 

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Posted · Ultimaker's_v1.5.7 ???

I think I see why the cooling fans are burning up, they probably don't like being run at 19V. Any reason not to add a 70 ohm resistor to lower fan's input to 12V ?

 

Because that only works on a known resister load, which motors are not. They are resister-inductive loads.

 

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