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12-03-2008, 05:50 PM #1
Trggering a relay with a button..
Hello everyone, I am in need of help in trying to fire a relay to an digital I/O controller relay from a web page. I have seen this in other web pages. Example: You push a Button and it fires a relay on a com port on the pc which allows a light to come on. I am not sure if this is where this should be posted..any help in code would be greatly helpfull....Thanks: confused:
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12-03-2008, 10:11 PM #2
Re: Trggering a relay with a button..
I think what you're trying to do couln't be done by HTML alone. You need Javascript, but that's yet to be know.
Could you please provide a link to where you've seen that effect. Your description is vague to me.Checkout my porfolio.
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12-04-2008, 07:20 PM #3
Re: Trggering a relay with a button..
Hi thanks for the information, it is not done with weboages persay, but done with a program that uses internet explorer to trigger a digital relat to fire to turn on and off other devices.
Maybe it is a program that runs on a pc that triggers a relay through internet explorer to allow switches to work within a html or java enviroment...
thanks
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12-04-2008, 07:46 PM #4
Re: Trggering a relay with a button..
My apologies, but I'm unaware about Java.
Checkout my porfolio.
Please click thebutton when a member helped you.
Take time to use Forum's Search function.
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12-05-2008, 09:58 AM #5
Re: Trggering a relay with a button..
Due to it's nature, Javascript, HTML, AJAX, and other Client-Side languages are unable to interface with a computer's hardware on its own. There will need to be a Browser Helper Object (BHO) installed that will act as a liason between the web page and the hardware in order for this to happen.
Unfortunately, this is a technique that various types of malware use to infect a user's PC. As such, most users will not install it, and the more paranoid ones (like me) would not even visit your site again.
As for how to do it, I honestly have no idea how to do it.