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Old Dec 03, 2003, 04:00 PM
Thats NOT indestructible
j8m8l's Avatar
London UK
Joined Apr 2002
1,448 Posts
DIY IR 555 timer help.

Hi Guys.

I am working on a DIY IR system for a school project.
I would like to use a 555 timer, rather then a PIC for the transmitter, but am a bit stuck.

Could somone with some 555 knowledge give me a hand?
My email is jm.levine[at]btinternet[dot]com

Thank you kindly.
Josh Levine.
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Old Dec 03, 2003, 04:23 PM
Registered User
Chile, Santiago
Joined Oct 2003
18 Posts
hi

your you want it to use to obtain proportional controls?
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Old Dec 03, 2003, 05:19 PM
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N. Staffs, UK
Joined Jan 1997
5,654 Posts
There's quite a reasonable 555 tutorial and a few example ccts at http://www.uoguelph.ca/~antoon/gadgets/gadgets.htm

That should be enough to get you going. For a single proportional channel think about the servo tester ccts. They're most of the way there.

Steve
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Old Dec 03, 2003, 06:02 PM
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QLD, Australia
Joined Sep 2003
1,548 Posts
If you want propo multi channel heres an easy circuit
Stewart

This is the channel encoder to modulate the 555 oscilator
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Last edited by clipclop; Dec 03, 2003 at 10:43 PM.
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Old Dec 03, 2003, 10:02 PM
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Dindea's Avatar
United States, TX, Fort Worth
Joined Sep 2003
73 Posts
This is a schematic that Joe Price sent me when him and a few others were talking about a 555 solution in the "DIY IR" thread.

I have not been able to do anything with it since I don't have a Tx with a trainer output. I was fiddling around with the idea of a Playstation IR Tx using a 555 timer when the DIY IR thread took off with Koichi's contributions.

Joe, if you see this and want me to take it down just say the word!

HTH
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