Re: [CAD_CAM_EDM_DRO] Dan's product announcement

Yes the pot provides the speed control of the pulses to the drivers.
Dan
-----Original Message-----
From: Marshall Pharoah <m_pharoah@...>
To: CAD_CAM_EDM_DRO@onelist.com <CAD_CAM_EDM_DRO@onelist.com>
Date: Friday, March 10, 2000 1:05 PM
Subject: Re: [CAD_CAM_EDM_DRO] Dan's product announcement

>From: "Marshall Pharoah" <m_pharoah@...>
>
>Dan,
>
>You're starting to get me interested. I didn't pay a lot of attention to

your

>previous post. Are you using a pot to control speed in the power feed

mode?

>
>When you connect this to a PC, are you using the parallel port?
>I've been doing some work with digital I/O port boards from National, and

I'd be more

>interested in using them, think it would be any problem?
>
>Marshall
>
>----- Original Message -----
>From: Dan Mauch <dmauch@...>
>To: <CAD_CAM_EDM_DRO@onelist.com>
>Sent: Friday, March 10, 2000 3:51 PM
>Subject: Re: [CAD_CAM_EDM_DRO] Dan's product announcement
>
>
>> As per the power feed I added the pulse generator to the 5A board for two
>> reasons. One for testing and the other for a power feed.
>> It is really quite simple. I used a three pole three position rotary
>> switch. The pulse line went to the pole and the X-Y-Z step pins were
>> connected to the the approiate connections. A dir ground connection was
>> soldered to a second pole. The x-y-z direction line were connected to

the

>> appropriate connections on the switch. When in the power feed mode the

db25

>> cable was disconnected. But I used an AB switch for that problem.
>> There was a SPDT switch that selected manual Power feed or computer. A
>> another SPST switch was in the direction line. With switch A in the

manual

>> mode the pulse generator feed the rotary switch which in turn provided

the

>> signals to the step lines. Flip the direction switch and the manual
>> direction would flip.
>> I'll see if I can draw it up soon.
>> Dan
>>
>> --
>>
>>
>
>
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