Subject:
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Re: multi-device output controller (fwd)
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 26 Mar 1999 15:27:53 GMT
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Viewed:
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1007 times
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In lugnet.robotics, lego-robotics@crynwr.com (Jim Choate) writes:
>
> What about a real time circuit that routed the output power to one of eight
> output ports depending on the PWM. That way it only takes one output port
> on the RCX and up to three (out of 24) motors could be running at the same
> time. • [snip]
> Use the output ports for selection only and use a seperate circuit to handle
> the pwm. For example, use 1 & 2 as a bank and member select and the third as
> a clock/amplitude select.
[snip]
Ha! I'm one up on ya both. Run a tight loop and find out how fast the
RCX can cycle the motors on and off, time it, and send a package a serial
message at whatever the fastest BAUD rate is to control a max of N motors
with X power settings either forward or reverse, or to keep the word size
small and still be useful, 4 motors (2 bits),forward/reverse (1 bit), 8
speeds (3 bits). You still have the two directly controlled motors which
means that you now have six fully controlled motors. Hmmm, if you can
spit the data out fast enough to avoid time slicing errors this just might
work!
;-)
DLC
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Message is in Reply To:
 | | Re: multi-device output controller (fwd)
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| ----- Forwarded message from Joel Shafer ----- Date: Thu, 25 Mar 1999 13:43:33 -0600 From: Joel Shafer <joel@connect.net> Subject: Re: multi-device output controller What about a real time circuit that routed the output power to one of eight output (...) (25 years ago, 26-Mar-99, to lugnet.robotics)
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