90 DC Motors to Control
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Posts: 46,084
Hi
Does anyone have any novel ideas how to control
90 DC Motors 4.5v @ 1 amp.
Only one motor at a time is required to move.
Direction Control is needed.
Would like to do this with a single BS2 Stamp (16 I/O)
In addition I would like to Read 45 IR Sensors,
one at a time to the same Stamps.
Any ideas would be greatful
Cheers
Chris Hill (UK)
Does anyone have any novel ideas how to control
90 DC Motors 4.5v @ 1 amp.
Only one motor at a time is required to move.
Direction Control is needed.
Would like to do this with a single BS2 Stamp (16 I/O)
In addition I would like to Read 45 IR Sensors,
one at a time to the same Stamps.
Any ideas would be greatful
Cheers
Chris Hill (UK)
Comments
With that many I/Os to control, I usually end up using
Intel 8255s and a larger microcontroller (8051 type).
Haven't tried this with a Stamp. Interface
requirements for the 8255 are 8 data lines, 2 address
lines, 3 control lines (including controller reset).
This will serve to give crude ON/OFF control and
nothing more.
Assuming the use of a single Basic Stamp, 8 of these
will be required - 4 for ON/OFF, 4 for direction.
Relays or appropriate driver circuitry will also be
required to switch and isolate the 1A current required
for each motor. Discrete IR readback will require
another 2 devices.
At about this time, I start looking toward distributed
control and small networks (RS-485). Though more
expensive, I find it easier to divide and conquer a
project of this size. Have one Stamp control a logical
partition/number of motors with another computer
providing master control. I can guarantee code fitting
into the Stamp, too. RS-485 is great for noisy
environments and is a multidrop interface.
This is just one idea.
Kevin K Asato
KC6POB
--- christopher_hill2001 <Christopher_Hill@M...>
wrote:
> Hi
>
> Does anyone have any novel ideas how to control
> 90 DC Motors 4.5v @ 1 amp.
>
> Only one motor at a time is required to move.
> Direction Control is needed.
>
> Would like to do this with a single BS2 Stamp (16
> I/O)
>
> In addition I would like to Read 45 IR Sensors,
> one at a time to the same Stamps.
>
> Any ideas would be greatful
>
> Cheers
> Chris Hill (UK)
>
>
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If the LED's of that MAX 7219 were opto couplers instead of visible
LED's then you could control 64 motors with one 7219 and control their
direction with a second 7219. Just an idea??
Leroy (USA - Cincinnati, Ohio)
christopher_hill2001 wrote:
>
> Hi
>
> Does anyone have any novel ideas how to control
> 90 DC Motors 4.5v @ 1 amp.
>
> Only one motor at a time is required to move.
> Direction Control is needed.
>
> Would like to do this with a single BS2 Stamp (16 I/O)
>
> In addition I would like to Read 45 IR Sensors,
> one at a time to the same Stamps.
>
> Any ideas would be greatful
>
> Cheers
> Chris Hill (UK)
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed. Text in the Subject and Body
of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/