Friday, May 31, 2013

Encoder Fixed

 Naughty little wheel encoder!
I mentioned suspicious signals from the encoders. Here's what I was seeing. This is a plot of the distance traveled versus time. The plot is showing that one of the wheels is able to travel more than 300m in a fraction of a second. Cool.


The cause of the problem was a bad solder joint on the encoder's ground wire. Intermittent contact was causing flickering of the signal and the mbed is easily fast enough to count them all.

A quick hit on all the encoder solder joints after liberal application from the flux pen fixed it up real nice.


It now appears my GPS is toast. Seriously, universe?!

4 comments:

  1. Now The GPS? oO"
    Seems that the universe is plotting against you...

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  2. You too, huh? Sometimes I think we need to hold a second AVC about a month later for all of us who are never ready.

    Which GPS is smoked?

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    Replies
    1. The Venus. I never got the big fixed on the ublox.

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    2. I have a spare Venus, if you are in a pinch.

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