It can be done, but to answer I am going to use Parallax items so we have a refernce frame.
First off I am going to assume·using multipulte·Stamps with 16 pins and having one pin hooked the the stamp in front and the one pin hooked to the stamp behind so it forms a chain. The first stamp is hooked into the host.
This link takes you to the Parallax motor controler page
So using the PWMPAL (the 4 motor controller) and using 14 pins per Stamp you would need 15 stamps to run 200 motors. This would also allow independent or simaltaneous control of each motor and only one port needed on the host.
You may think I am being silly, but often when someone thinks of something like this they are using brute force rather than intelligent design.
If you were to describe the project, you might find a way to do it better with few stepper motors and other hardware [noparse][[/noparse]like conveyor belts].· It may not always be the case, but there is a balance of machine and computer in all robotic design.
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"If you want more fiber, eat the package.· Not enough?· Eat the manual."········
···················· Tropical regards,····· G. Herzog [noparse][[/noparse]·黃鶴 ]·in Taiwan
mlfranz
Posts: 5
Comments
Are you speaking about independent control, with each motor being addressed singly?
Regards,
Bruce Bates
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First off I am going to assume·using multipulte·Stamps with 16 pins and having one pin hooked the the stamp in front and the one pin hooked to the stamp behind so it forms a chain. The first stamp is hooked into the host.
This link takes you to the Parallax motor controler page
http://www.parallax.com/html_pages/products/motorcontrol/motor_control.asp
I use my servo control to run motors. This link is for the servo controller which can run upto 16 servos.
http://www.parallax.com/detail.asp?product_id=28823
These link are for·running up to two motors
http://www.parallax.com/detail.asp?product_id=27969
http://www.parallax.com/detail.asp?product_id=29144
And this link will handle upto 4 motors
http://www.parallax.com/detail.asp?product_id=28020
So using the PWMPAL (the 4 motor controller) and using 14 pins per Stamp you would need 15 stamps to run 200 motors. This would also allow independent or simaltaneous control of each motor and only one port needed on the host.
You may think I am being silly, but often when someone thinks of something like this they are using brute force rather than intelligent design.
If you were to describe the project, you might find a way to do it better with few stepper motors and other hardware [noparse][[/noparse]like conveyor belts].· It may not always be the case, but there is a balance of machine and computer in all robotic design.
▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
"If you want more fiber, eat the package.· Not enough?· Eat the manual."········
http://forums.parallax.com/showthread.php?p=610849
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Chris Savage
Parallax Tech Support