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DRO..... PC based

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OzzyRob:
I've been using Yuri's DRO for a while now,big thanks to Yuri, unfortunately I don't have a android tablet but did manage to get Android installed on an Acer netbook. Runs great using bluetooth but lacks the touchscreen convienence.
I used a 3.3v Arduino Nano so I didn't have to use a divider network. If you go this route make sure you use a pull down resistor on each data line. Another thing that is a must is to have a capacitor across each +ve & gnd going to each head, this stops the random "resets" on an axis.
The "PC" option did intrigue me for a while. I wonder if a Mach 3 "plugin" could be an option ?   

Dawai:
Mach3 readout, Using vb script I posted code here in another post for a "serial" control card using MScomm.

http://madmodder.net/index.php/topic,9395.0.html

Mach3 does a "pulse" feed system thou through the parallel port. Not a on-0ff like I did with the cheap_ass dro.

I have Mach3 on my bridgeport cnc here.

tom osselton:
Just having a brainfart would it be posible to take two readings off of the scale? I was just thinking that  it should be posible to set the min/max for travel to prevent crashes and have two others that could be set manualy by the operator?

Noitoen:
I'm thinking of this solution for my mill and have a question. The iGaging scale sizes they announce, are these scale length or effective travel? 

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