Yuri comments

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                                            Yuri

Support for variable pen raising/lowering speed and other fixes

I've added the missing prototypes. Please try now.

Plot paused by button press after node number

This should be fixed in my branch https://github.com/Yura80/EggDuino

Unable to find an Eggbot on any serial port. :( Error reading serial data.

It looks like your steppers skip steps. Try to increase the current: http://reprap.org/wiki/Pololu_stepper_driver_board

Unable to find an Eggbot on any serial port. :( Error reading serial data.

To make 2.7.1 work, you should change VID/PID in ebb_serial.py, or just hard code your port number by replacing `EBBport = None` with `EBBport = "COMxx"` in function `findPort()`

Unable to find an Eggbot on any serial port. :( Error reading serial data.

@H3nk Spherebot may be working because it has slower speeds or acceleration. Just try to increase the current by slightly rotating the trimpot clockwise (A4988) or counterclockwise (DRV8825). I don't...