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PC controlled curtains

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jwatte:
An alternative to a relay board would be a USB motor controller. It will have built-in capability to run the motor both forwards and backwards, rather than using two different relays. Something like this perhaps:
http://www.pololu.com/catalog/product/1372 (18V, 7A, assembled)
This comes with screw terminals and pin headers, so you may not need to solder much at all.
The USB connection will let you tell it to run forward or reverse, at various speeds, as desired.

Soeren:
Hi,


--- Quote from: jwatte on December 04, 2012, 12:21:17 AM ---An alternative to a relay board would be a USB motor controller. It will have built-in capability to run the motor both forwards and backwards, rather than using two different relays. Something like this perhaps:

http://www.pololu.com/catalog/product/1372 (18V, 7A, assembled)
This comes with screw terminals and pin headers, so you may not need to solder much at all.
The USB connection will let you tell it to run forward or reverse, at various speeds, as desired.

--- End quote ---

If the purpose is to automate the process, it won't work, as there's no way to feedback end limit info and if the purpose is using visual feedback with manual control, there's no need for a PC, as that could be done with a simple switch.

Pogertt:

--- Quote from: Soeren on December 04, 2012, 03:59:42 PM ---Hi,


--- Quote from: jwatte on December 04, 2012, 12:21:17 AM ---An alternative to a relay board would be a USB motor controller. It will have built-in capability to run the motor both forwards and backwards, rather than using two different relays. Something like this perhaps:

http://www.pololu.com/catalog/product/1372 (18V, 7A, assembled)
This comes with screw terminals and pin headers, so you may not need to solder much at all.
The USB connection will let you tell it to run forward or reverse, at various speeds, as desired.

--- End quote ---

If the purpose is to automate the process, it won't work, as there's no way to feedback end limit info and if the purpose is using visual feedback with manual control, there's no need for a PC, as that could be done with a simple switch.


--- End quote ---


Looks like limit switches to me!
http://www.pololu.com/picture/view/0J2910

Soeren:

--- Quote from: Pogertt on December 05, 2012, 10:56:20 PM ---
--- Quote from: Soeren on December 04, 2012, 03:59:42 PM ---Hi,


--- Quote from: jwatte on December 04, 2012, 12:21:17 AM ---An alternative to a relay board would be a USB motor controller. It will have built-in capability to run the motor both forwards and backwards, rather than using two different relays. Something like this perhaps:

http://www.pololu.com/catalog/product/1372 (18V, 7A, assembled)
This comes with screw terminals and pin headers, so you may not need to solder much at all.
The USB connection will let you tell it to run forward or reverse, at various speeds, as desired.

--- End quote ---

If the purpose is to automate the process, it won't work, as there's no way to feedback end limit info and if the purpose is using visual feedback with manual control, there's no need for a PC, as that could be done with a simple switch.


--- End quote ---


Looks like limit switches to me!
http://www.pololu.com/picture/view/0J2910

--- End quote ---

I know that you're just dying to find flaws in what I write, but apparently you didn't put your heart into it, or you would have gotten the full story (and stayed your hand as a consequence). So, once again, I ask you to not confuse the OPs with superficially researched nick nack.

And further, to not give the OP a false impression, here's what the so called "kill switch" settings are for (which isn't external end limit switches):

--- Quote from: Datasheet ---• Forward limit switch: When the scaled value of the channel is above 1600 (50%), the limit switch will be considered active and the motor will not be allowed to move forward. If the target speed is positive, a “Limit/kill switch” error will occur.
• Reverse limit switch: When the scaled value of the channel is above 1600 (50%), the limit switch will be considered active and the motor will not be allowed to move in reverse. If the target speed is negative, a “Limit/kill switch” error will occur.

--- End quote ---



Since you obviously have spare time for trouble shooting of my posts, I assume you have found (at least some of) the flaws of the mic amp you posted a while back and are ready to comment?
If not, just say the word and I'll enlighten you.

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