RE: [CAD_CAM_EDM_DRO] PIC DRO Revisited

Glen,

If I might suggest, keep your initial function set minimal and initial
design open for expansion. This will allow you to get it up and running
fairly quickly. At that point the debugging begins.

As for a display, I am rather partial to what I think are called Vacuum
Fluorescent. They are a dot matrix display used in cash registers and some
car audio systems. Their displays are clearly visible in the brightly light
stores and insides of cars.

Cheers!

Paul Devey

-----Original Message-----
From: Glen Benson [SMTP:benson@...]
Sent: Saturday, March 18, 2000 5:14 PM
To: CAD_CAM_EDM_DRO@onelist.com
Subject: [CAD_CAM_EDM_DRO] PIC DRO Revisited

From: "Glen Benson" <benson@...>

Hi,

I have been programming PICs for a few years, and am cosidering
making a 3 axis DRO. I would be more than glad to share my
design,code,schematics with all. Having never worked with a DRO, I
have a couple of questions. How does the DRO know which direction the
motor is going (so it can increment or decrement). Also what
properties do the average encoders have (e.g. opto
using a 5 volt supply, hall effect) do they pulse a signal out or
need a supply voltage etc.

I was thinking of using a seperate color of LED diplay for each
axis. Besides a button to zero each axis are there any other features
I need to consider?

Thanks

Glen Benson






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