Activities/Turtle Art/Using Turtle Art Sensors: Difference between revisions
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[[File:Complete microphone.jpg]] | [[File:Complete microphone.jpg]] | ||
Experiment with the fineness of the crushed charcoal and the tension in the foil. The more squashed the charcoal is, the lower the resistance. | Experiment with the fineness of the crushed charcoal and the tension in the foil. The more squashed the charcoal is, the lower the resistance. With the XO1, aim for a resistance of around 3k ohms and definitely 700 ohms < resistance < 14k ohms. | ||
Graph the resistance, pressing on the foil changes the resistance. You have built a pressure sensor. It can also sense air pressure. You have built a microphone. Change to Sound sensing. On my first try I was able to sense clapping. | Graph the resistance, pressing on the foil changes the resistance. You have built a pressure sensor. It can also sense air pressure. You have built a microphone. Change to Sound sensing. On my first try I was able to sense clapping. | ||