Finalized connection and Calibration

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This morning we drew up a diagram of the connections that should be made on the beaglebone connector in GIMP. This was based on the pin assignments in our blog post from the 9th of June and the Map of the Beagle Cape Expansion Headers.
After the diagram was made we got to soldering and ended up with our completed connector:
Then for the Moment of truth, to connect the ribbon cable to the sensor protoboard and test to see if it works...
It Does! Now we can calibrate the accelerometer in its final form. What we did to calibrate it is hold the board in the full negative and full positive directions for each axis and record the maximum and minimum voltages shown below:
X max: 1.914
X min: 1.276
Y max: 1.939
Y min: 1.289
Z max: 1.994
Z min: 1.350
The average of each maximum and minimum was taken. This represents the zero offset
X offset: 1.595
Y offset: 1.614
Z offset: 1.672
Then the difference between each offset and the minimum was taken, since this is a measured difference of 1g, this is our sensitivity or Volts/G
X sensitivity: 0.319
Y sensitivity: 0.325
Z sensitivity: 0.322
Using these values to measure the acceleration we're getting <2% error, below our original goal of 2.5% so this is the configuration we will be flying in to get our data.

On another note, we need to get some soldering helping hands, Its getting difficult to solder all of these connectors this close together with only 2 arms.

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