TouchDRO

Adaptation of Yuriy Krushelnytskiy’s TouchDRO project to Sherline lathe and milling machines.

Features

• uses CUI's AMT102 rotary encoder
• requires only adaptation of existing parts, easily modifiable by purchasing a new set of bushings and handwheels
• inexpensive electronic components, including a tachometer
• custom designed printed circuit board eliminates the need for lots of wiring
• based on the teensyduino but compatible with any arduino-based microcontroller
• the TouchDRO project's app is compatible with any Android device with bluetooth

And includes all of TouchDRO's features:

• Bluetooth connectivity support
• Display for up to four axes
• Support for metric an imperial units (mm and inch)
• Support for standard DRO functions:
  • Tool Offset
  • Preset Dimension
  • “1/2” Function
  • Hole Circle (Arch)
  • Hole Grid
  • Point memory only limited by internal storage capacity of device
  • Multiple workspaces
  • Worskpace preview

Implementation details can be found here:

• mechanical adaptation of lathe and/or mill for rotary encoders
• electronic components and firmware for encoder interface

Updates

There is now a second version of the interface (rev 2) with several enhancements. More information can be found here TouchDRO rev 2.