We worked with 3 – 5th grade classes that were exploring concepts of waves. We utilized the micro:bit as sound level detector. This was their first time using a micro:bit. First we had them display the temperature. Then we replaced that with sound level. Next we had them use the “plot bar graph” piece of code to get a graph that kept changing , and was easier to see the changes. Our 3rd part (that we got to with a couple of students) was having the sound level be the brightness of the 5×5 array.
Using iPads with the micro:bit is not always the easiest. Pairing doesnt always work. Soemtimes the micro:bits go back to “first us mode” (wanting you to go through “touch A” “touch B” “shake”…). But we got through it and they had fun making noise.
It would be good to compare micro:bit 256 sound levels to a true decibel meter.
presentation I used to help us walk through steps :
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