SV: [basicstamps] Input / Output
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Posts: 46,084
Greetings!
Of course it's possible...
There's just a few questions that needs answering...
1. How many pins are you willing to use?
2. Which BS are you planning to use?
1. you can use a chain of 'shift registers' connected to a pin (using
another as clock)
and just shift a bitpattern out every time you want to switch one on...
(Can be done on a BS1)
2. You could set up a stack of 8bit latches and a 74HC138 '3 to 8' decoder
to select between them...
(Needs a BS2 or better since you need at lest 11, probably more pins)
3. You could use a BS2p, hook up a whole lot of Dalls Semi DS2406/DS2407
1-Wire switches (Uses only 1 pin, but the BS2p is the only one with built-in
commands for it)
In all case. you'll probably need some sort of driver circuit.
(The DS2406/7's can only handle about 20mA each, and don't expect other
locgics to do much better. )
:-)
Trygve
Opprinnelig melding
Fra: sgillem@a... [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=qPnIJbnxIomMT8d4sk7FCladeuj19KltCnS9h1XcwIf2ZHX6Q6n9bymkq4f0KWvuiaTQ3aWtHA]sgillem@a...[/url
Sendt: 27. mai 2002 15:26
Til: basicstamps@yahoogroups.com
Emne: [noparse][[/noparse]basicstamps] Input / Output
Hello,
I have a question. I need to control 64 relays (250 VAC, 25 Amp) with the
Basic Stamp. Is this doable ? How do I go about getting started ?
Thanks alot,
Steve Gillem
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Of course it's possible...
There's just a few questions that needs answering...
1. How many pins are you willing to use?
2. Which BS are you planning to use?
1. you can use a chain of 'shift registers' connected to a pin (using
another as clock)
and just shift a bitpattern out every time you want to switch one on...
(Can be done on a BS1)
2. You could set up a stack of 8bit latches and a 74HC138 '3 to 8' decoder
to select between them...
(Needs a BS2 or better since you need at lest 11, probably more pins)
3. You could use a BS2p, hook up a whole lot of Dalls Semi DS2406/DS2407
1-Wire switches (Uses only 1 pin, but the BS2p is the only one with built-in
commands for it)
In all case. you'll probably need some sort of driver circuit.
(The DS2406/7's can only handle about 20mA each, and don't expect other
locgics to do much better. )
:-)
Trygve
Opprinnelig melding
Fra: sgillem@a... [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=qPnIJbnxIomMT8d4sk7FCladeuj19KltCnS9h1XcwIf2ZHX6Q6n9bymkq4f0KWvuiaTQ3aWtHA]sgillem@a...[/url
Sendt: 27. mai 2002 15:26
Til: basicstamps@yahoogroups.com
Emne: [noparse][[/noparse]basicstamps] Input / Output
Hello,
I have a question. I need to control 64 relays (250 VAC, 25 Amp) with the
Basic Stamp. Is this doable ? How do I go about getting started ?
Thanks alot,
Steve Gillem
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/