The digital readout on my milling machine consisted of three of these "cheap" readouts.
Here is the knee (Z) readout on my mill.
These units work very well except that the display units are a bit small, hard to read and only have limited functionality. So I decided to setup a DRO readout based on the info on this web page -http://ift.tt/1dG3egr. The Android app is configurable, a much bigger display and has a lot of the features found on commercial DRO units (and probably some that aren't?).
The setup consists of a small microcontroller (Arduino Uno) connected to the DRO axi (plural of axis
) which transmits the reading to an Android tablet via bluetooth. It's really quite a nice little (and inexpensive) setup.
Below is my current setup for proof of concept. The Arduino, protoshield and bluetooth module (in the black tape) cost less than $15 (delivered) and the addition of a few simple components completes the unit.
The tablet was an old windows based unit (an old one from work) that I installed Android x86 on (as a dual boot) which works well except that I needed to install an external Bt dongle as it won't use the internal device (not a biggie). I can also use my phone as the DRO head, in a pinch.
It all seems to work as planned, so I just need to box up the electronics and mount the tablet.
Here is the knee (Z) readout on my mill.
These units work very well except that the display units are a bit small, hard to read and only have limited functionality. So I decided to setup a DRO readout based on the info on this web page -http://ift.tt/1dG3egr. The Android app is configurable, a much bigger display and has a lot of the features found on commercial DRO units (and probably some that aren't?).
The setup consists of a small microcontroller (Arduino Uno) connected to the DRO axi (plural of axis
Below is my current setup for proof of concept. The Arduino, protoshield and bluetooth module (in the black tape) cost less than $15 (delivered) and the addition of a few simple components completes the unit.
The tablet was an old windows based unit (an old one from work) that I installed Android x86 on (as a dual boot) which works well except that I needed to install an external Bt dongle as it won't use the internal device (not a biggie). I can also use my phone as the DRO head, in a pinch.
It all seems to work as planned, so I just need to box up the electronics and mount the tablet.
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