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[Paparazzi-devel] IR sensors debugging

From: Paul Cox
Subject: [Paparazzi-devel] IR sensors debugging
Date: Sun, 7 Nov 2010 16:28:34 +0100


in the past I've had hardware issues with the IR sensors and your
symptoms sound similar. I put a multimeter on the analog output of the
sensor and moved a hot a soldering iron in front of the various
thermopiles and found that there was no effect for some of the sensors
which was a telltale sign that I had a hw issue. I can't remember if I
had a blown ADC input pin, an intermittent wire connection, or the
opamp on the IR board was busted, but if you follow the same logic
maybe you can identify this issue as hw or not.


> Message: 1
> Date: Sun, 7 Nov 2010 11:15:07 -0000
> From: "Roman Nikitin" <address@hidden>
> Subject: AW: [Paparazzi-devel] IR sensors.
> To: <address@hidden>
> Message-ID: <>
> Content-Type: text/plain; charset="us-ascii"
> Thank you for the answer, but I think you misunderstood me a bit.  I have 0
> reading in message window, but it is the case when my IR1 neutral 40, IR2
> neutral 186, TOP neutral 615. And it looks not well  I mean. Even if I move
> my finger in front of one or another side of my sensors the values changes
> just about one or two, or sometimes I cannot see any changes at all. More
> ideas about it? Should I buy another sensors or maybe somebody had same
> problems and solved them?

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