PIR Sensors: Difference between revisions
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Hundreds of circuit boards incorporating PIR motion sensors were donated to Noisebridge. They are available for use immediately, and they are currently located in the storage area of the 83c Mezzanine. | Hundreds of circuit boards incorporating PIR motion sensors were donated to Noisebridge. They are available for use immediately, and they are currently located in the storage area of the 83c Mezzanine. | ||
Brainstorm ideas for projects incorporating this large number of boards and sensors | [[Image:PIR_SensorBoardSchematic.pdf]] | ||
Brainstorm ideas for projects incorporating this large number of boards and sensors: | |||
Revision as of 13:35, 7 April 2009
PIR Sensors Info
Pyroelectric devices, such as the PIR sensor, have elements made of a crystalline material that generates an electric charge when exposed to infrared radiation. The changes in the amount of infrared striking the element change the voltages generated, which are measured by an on-board amplifier. The device contains a special filter called a Fresnel lens, which focuses the infrared signals onto the element. As the ambient infrared signals change rapidly, the on-board amplifier trips the output to indicate motion.
--From the PIRSensor-V1.1 pdf (linked below)
PIR Sensor Datasheets
pdf warning!
File:PIR Sensor 2 Element Datasheet.pdf
File:PIRSensor-V1.1.pdf
PIR Motion Sensor Circuit Boards
Hundreds of circuit boards incorporating PIR motion sensors were donated to Noisebridge. They are available for use immediately, and they are currently located in the storage area of the 83c Mezzanine.
File:PIR SensorBoardSchematic.pdf
Brainstorm ideas for projects incorporating this large number of boards and sensors: