I'm running out of title ideas, give me some ideas in the comments. Anyway, why the post is here, so we wanted to see what the problem with the temp was! so we tested constantly (the engineer way, try and make it fail till one way works). On out flight, we collected the temperature data, and here it is. the temperature made sense for the first 25 minutes, but then it went all bonkers and came back. We don't trust the ending part. We had two theories about this situation. 1. we thought that maybe there was a power issue in the box. Perhaps the temperatures were getting weird and messed with arduino battery. The reason we thought this is because the GPS went wacky at the same time. So we did a experiment where we plugged the arduino into reliable 5 volt constant power, but it still glitched. During this test one sensor was on the coffee table, and one was inside the box with two handwarmers. 2. We wondered if there was too much data coming to the arduino all at once through both the software and hardware serial ports. We read that sometimes these ports conflict. So we ran the arduino again, plugged it into 5 volts power, with the GPS powered but the data line disconnected (we plugged the communications line between the gps and aruino out, so nothing would interfere). During this test the sensors were just laying on top of the coffee table overnight. as you can see from this graph, there is no longer a glitch on the data. So on our next flight we will use a different software serial port.
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AuthorMalachi and Ezra's page where we build cool stuff and either break it, set fire to it, etc. in the name of science. Archives
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