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I posted a mount on thingiverse for my v2 - making it very similar mount like easy struder. http://www.thingiverse.com/thing:1511130 I put speed at 403 steps/min thanks for the tip. I'm installing it with a new e3d volcano to do fast low res printing for early prototypes. I hope it's fast enough for ...

supdate: I think Serial1 *might* be working with this mega serial test sketch, although the behavior is still odd..It can send data just fine, but receiving data isn't working. (Serial1 read data shows up in Serial main read, same for Serial2, etc.) sketch here: https://www.arduino.cc/en/Tutorial ...