15 June 15

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Last Thursday we were able to complete the connection between the beagle and the protoboard. We also were able to test it and verify that all sensors were working properly. We had to re-calibrate them to compensate for the additional resistance in the ribbon wire and the beagle cape connector. After we were able to finish that we soldered together an external thermistor onto a 4-wire ribbon cable and soldered it down to the beagle cape connector. The whole assembly is just a 1k ohm resistor in series with a thermistor, with both ends soldered to the red and black wires respectively. The center of the two, where we read the voltage was soldered to the green wire and connected to the analog to digital converter. This was also able to read temperatures accurately which we tested by using a cup of ice water.

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