Re: [CAD_CAM_EDM_DRO] DRO

> The one I have is the stretched strip type and the encoder head has just
> four connections - I am assuming power, ground, channel A and channel B. As
> one of the tracks on the flexy connector is wider than the rest I would
> assume that this is probably ground but that then leaves the other three.
> The application I have in mind doesn't need much accuracy so this strip
> should be OK if I can just work out the connections, voltage etc.

If the printer isn't too dead you could plug it in and measure the
voltages on the pins. My little linear module (unlike the rotary one)
has a cap on the carrier pcb, so that should identify the power leads,
then it is only a question of which is which. It doesn't matter if
you swap the quadrature leads - all it will do is make the encoder
count in the opposite direction, so swap them until you have the
orientation you want.

Chris

-------------------------------------------------
Christopher C. Stratton
Engineer, Instrument Maker, and Horn Player
ccs@... 617 628 1062
http://web.mit.edu/~stratton/www/brassbuild.html