Activities/Turtle Art/Using Turtle Art Sensors: Difference between revisions
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Experiment with the fineness of the crushed charcoal and the tension in the foil. The more squashed the charcoal is, the lower the resistance. Aim for a resistance of around 3k ohms and definitely 700 ohms < resistance < 14k ohms. | Experiment with the fineness of the crushed charcoal and the tension in the foil. The more squashed the charcoal is, the lower the resistance. 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. 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. | ||
==Links== | ==Links== | ||