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GPS Logger Hardware v5.0

Published on March 20, 2012, by in Hardware.

Got another rev of the Skiing Datalogger, I had REV:B boards made but never built one up since I knew of the issue with the gyro and the holes didn’t line up with the case. This board is REV:C which I added some holes, all the flying wires are gone (so far) except the rework

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New Datalogger User Interface

Published on February 4, 2012, by in Hardware.

Previously I have used this interface sewn into a glove to start new tracks in the GPX file and also give me a visual indication that the device is logging data.  The main problem with this system is I can not come up with a good way of disconnecting the glove from the wire to

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GPS Logger Hardware v4.2

I didn’t change anything with the electronic parts, but did get a new case for the data logger.  I tried long and hard but could not find a way to fit the GPS antenna inside the case.  The Molex connector goes to the  status LED and switch shown earlier.  The switch I changed from being a

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GPS Logger Hardware v4.1

I’m now back to the same functionality I had on the version I built on proto boards though now much smaller. I added a run/stop switch on the side. Each transition from stop to run will result in a new file being started. Two lights on the top, the green one is lit when the

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GPS Logger Hardware v4.0

After having the boards for at least a month I finally built one up.  This board dosn’t really do much new it is basically my GPS logging hardware v3.1 built onto one board.  Since I was building my own boards I opted to use a atmega1284p since I was having issues running out of sram before

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Yikes! Invalid device signature.

Published on September 4, 2011, by in Hardware.

So, I got my PCBs in yesterday, imediatly grabbed the solder paste put a bunch of components down, reflowed them and everything looked good.  The power supply was actully very stable, even the components that didn’t have leads looked to be good.  I did know of some errors on the board such as not running

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Homemade Flex Circuit Boards

Published on July 24, 2011, by in Hardware.

A while ago I came up with an idea for a project that seemed to require a flexible LED matrix. I could not find any comerically available, and even flexible LCDs aren’t nearly as common as I would expect. Getting a custom flexiable PCB created is possible, but pretty expensive and not exactly easy. Seeing

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credit
© Ryan M Sutton, 2012