News post : ElecCircuit.com |  |
| Posted: 13 May 2016 06:04 PM PDT Simple vibration and motion sensors can be made using a pendulum switch, mercury switch or one of many other methods. The Vibration Sensor Kit uses no moving parts to detect vibration. Instead, a piezo speaker element is used as a sensitive vibration sensor. Note: I admire the writings of “Forrest M. Mims III”. The content is easy to read, even if English is difficult, for people to learn a second language, I like a science project. When the son grew up, I wanted him to read as well. How It Works The piezo speaker is connected to the input of an op amp operated as a comparator. This operation is achieved by eliminating the usual feedback resistor between the output The post Vibration Sensor Circuit Kit appeared first on Electronic projects circuits.  |
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