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Re: [Paparazzi-devel] Tiny13 V1.1


From: martin
Subject: Re: [Paparazzi-devel] Tiny13 V1.1
Date: Thu, 3 Jan 2008 10:04:20 +0100 (CET)

Hi Brad,

> I'm getting my board up and running and I seem to be running into a
> problem.  My 3.3V rail does not seem to be getting beyond IC4
(LM1117).
> C18 has correct voltage, but C20 and C21 read 0V.
>
> The board layout (Eagle) indicates C18 and C20 share the same far side
> pad.  IC4 pin-2 properly outputs 3.3V, which makes this somewhat
> interesting.

Pin 2 of IC4 and the positive sides of C20/C21 should be directly
connected through a PCB trace, is this trace broken or maybe pin 2 IC4
not properly soldered? Do you see 3.3V on pin 2 and also on the IC4?

73s de Martin, DL3FCC







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