Re: [AVR-Chat] UPDATE - AtTiny Communication Problem
2010-01-29 by Kenny M.
I'll have to pick some up, I have some "Metallized Polyester" 100nf caps. No I haven't actually measured the wires but they're all about the same length. I'm not near the thing but I'll get you the length in a bit. Thanks, Kenny
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----- Original Message -----
From: "John Samperi" <samperi@ampertronics.com.au>
To: AVR-Chat@yahoogroups.com
Sent: Thursday, January 28, 2010 6:33:50 PM GMT -05:00 US/Canada Eastern
Subject: Re: [AVR-Chat] UPDATE - AtTiny Communication Problem
At 10:08 AM 29/01/2010, you wrote:
>Here are some pics, hopefully you can make sense of them ... lol
It seems to be wired up correctly (image 4) however:
Have you physically measured the wires all the way back to the chip?
Have you measured the supply voltage when all is connected?
With such long wires you need to put a 100nF ceramic cap across
the supply pins on the chip itself (pins 4 and 8) or the whole thing
is likely to oscillate crazily.
Regards
John Samperi
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