for PandoraLab
Interactive calibration, interface translations and modifications by Mau Jabur - maumaker -at- pandoralab -dot- com -dot- br Version 1.0
LICENSE: Attribution-ShareAlikeAttribution-ShareAlike 4.0 International (CC BY-SA 4.0) [https://creativecommons.org/licenses/by-sa/4.0/]
based on version 1.03 code by Johannes Heberlein 2014 v 1.03 thingiverse.com/joo wiki.fablab-nuernberg.de units: mm; microseconds; radians origin: bottom left of drawing surface time library see http://playground.arduino.cc/Code/time RTC library see http://playground.arduino.cc/Code/time or http://www.pjrc.com/teensy/td_libs_DS1307RTC.html