Re: 555 as an encoder?
From: Rich Grise (richgrise_at_example.net)
Date: 02/02/05
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Date: Wed, 02 Feb 2005 03:02:42 GMT
On Mon, 31 Jan 2005 19:54:58 -0500, Rather Play Pinball wrote:
>
> Have a device with a corded remote control. 3 conductors. Had to take it
> apart. Inside, the conductors are labeled +V, Gnd, Signal. The remote is a
> 6 button job. There's a 555 and a transistor nearby. Lots of resistors
> and caps.
>
> So? Any guesses what they send out? A square wave with the number of
> pulses to correspond with the button number? A single long pulse with the
> width in proportion to the button number?
>
> How would you design it?
You've got it this far apart, and haven't traced the circuit yet?
Do that, and tell us what you find, and the answers will be much easier to
understand. :-)
And they'll be a lot more likely to have anything to do with what you have
in your hand.
Good Luck!
Rich
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