About deltabot printer
Rostock, Kossel Mini
Delta design considerations/theory
Real working area of delta printers (height)
http://forums.trossenrobotics.com/tutorials/introduction-129/delta-robot-kinematics-3276/
http://cats-fs.rpi.edu/~wenj/ECSE641S07/delta_calibration.pdf
Marlin Deltabot branch G29 Detailed discussion of Johann's probing
DeltaMaker Probe
https://plus.google.com/+AnthonyMorris/posts/es6J8EEocmq
Solenoid activated touch
Manual calibration
Delta printer least-squares calibration calculator
OpenDACT(Delta Automatic Calibration Tool) - For Repetier