Alt-BEAM Archive
Message #06760
To: beam@sgiblab.sgi.com
From: "Chris" 123abc@chek.com
Date: Fri, 15 Oct 1999 22:16:53 -0400
Subject: [alt-beam] Radio Communications?
Ok, I know this is a lttle far-fetched but, I'm going to say this anyway. Wouldn't it be great if we could some how make some kind of radio transmitter and reciever on 2 robots (each has both), and one robot would come across some obsticle or something (hit a wall, anything you can think of), and then it would transmit a certain tone in acordance with what ever is needed, then the other robot would recieve this, play it on a tiny speaker (or something, it should work like a telephone beep), identify the tone and respond accordingly.
I know that sounded hard (and probably impossible), but it would be a great research and engineering project. e-mail me if you think this would be a great project.
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6761 Fri, 15 Oct 1999 22:25:22 -0400 Re: PCB etching Richard Weait
> At 10:31 PM 10/15/99 +0000, you wrote:
>
> >Does anybody recommend Radio Shack PCB kits?
>
> . . . is that silence that I hear? . . .
>
> Use ammonium persulphate for etching, rather than ferric chloride.
> The crystals are easier to store, you can 'see' the reaction, and
> judge when it is complete.
>
> Read the label and follow the safety instructions.
>
> Cheers,
>
> Richard.
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