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MediaPortal 1
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Parallel Port Power Control Plugin
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<blockquote data-quote="Rhys.Goodwin" data-source="post: 110248" data-attributes="member: 27017"><p>-Yes pins 2 through 9 are correct. and use any other ground pin (25 is good)</p><p></p><p>-I would definatly <strong>not</strong> suggest running a realy straight of the prarllel port! Even a small one! the realy is a coil, when the electro-magnetic field collapses when your turn the realy off it will dump a spike of power into your parallel port! I think that's what will happen anyway! (I'm an electronics engineer, not even close!) </p><p></p><p>-Yes you can make it pulse, I have run a stepper motor off the parallel port pulsing it quite fast. (Of course you would need different software other than media portal plug-in) If you tell me what you're trying to do then maybe I can help?</p><p></p><p>-Here is a basic circuit for driving a relay. It might look complex if you're not used to electronics, but give it a go! you really need some thing like this for driving off the parallel port, there just isn't enough current. (Remember these are data pins designed for signalling!)</p><p><a href="http://ourworld.compuserve.com/homepages/Bill_Bowden/page6.htm#PPRIChttp://ourworld.compuserve.com/homepages/Bill_Bowden/page6.htm#PPRIC" target="_blank">http://ourworld.compuserve.com/homepages/Bill_Bowden/page6.htm#PPRIChttp://ourworld.compuserve.com/homepages/Bill_Bowden/page6.htm#PPRIC</a></p><p></p><p>Here is a circuit and some info on driving a stpper motor. could be used to drive realy too. It's better coz it uses a darlington array IC. makes things a bit more simple; rather than having a seperate transistor for each pin.</p><p></p><p><a href="http://www.electronics-lab.com/projects/pc/006/index.html" target="_blank">http://www.electronics-lab.com/projects/pc/006/index.html</a></p><p></p><p>Also have a look at these circuits, especially the second and thrid ones, they look really good and simple too. Note the optical isolator, this means that the higher voltage/current are not connected directly to your parallel port, only trigged by light!</p><p></p><p><a href="http://ca.geocities.com/xxxtoytech/parallel.html" target="_blank">http://ca.geocities.com/xxxtoytech/parallel.html</a></p><p></p><p></p><p>I'l try to get some photos of my solid state relay box soon, </p><p>don't have a camera at the moment.</p></blockquote><p></p>
[QUOTE="Rhys.Goodwin, post: 110248, member: 27017"] -Yes pins 2 through 9 are correct. and use any other ground pin (25 is good) -I would definatly [B]not[/B] suggest running a realy straight of the prarllel port! Even a small one! the realy is a coil, when the electro-magnetic field collapses when your turn the realy off it will dump a spike of power into your parallel port! I think that's what will happen anyway! (I'm an electronics engineer, not even close!) -Yes you can make it pulse, I have run a stepper motor off the parallel port pulsing it quite fast. (Of course you would need different software other than media portal plug-in) If you tell me what you're trying to do then maybe I can help? -Here is a basic circuit for driving a relay. It might look complex if you're not used to electronics, but give it a go! you really need some thing like this for driving off the parallel port, there just isn't enough current. (Remember these are data pins designed for signalling!) [url]http://ourworld.compuserve.com/homepages/Bill_Bowden/page6.htm#PPRIChttp://ourworld.compuserve.com/homepages/Bill_Bowden/page6.htm#PPRIC[/url] Here is a circuit and some info on driving a stpper motor. could be used to drive realy too. It's better coz it uses a darlington array IC. makes things a bit more simple; rather than having a seperate transistor for each pin. [url]http://www.electronics-lab.com/projects/pc/006/index.html[/url] Also have a look at these circuits, especially the second and thrid ones, they look really good and simple too. Note the optical isolator, this means that the higher voltage/current are not connected directly to your parallel port, only trigged by light! [url]http://ca.geocities.com/xxxtoytech/parallel.html[/url] I'l try to get some photos of my solid state relay box soon, don't have a camera at the moment. [/QUOTE]
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