Activities/Turtle Art/Using Turtle Art Sensors: Difference between revisions
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IT IS RECOMMENDED THAT A SERIES PROTECTION RESISTOR BE BUILT INTO THE MICROPHONE PLUG AND LEADS WHEN USING AN EXTERNAL VOLTAGE SOURCE | IT IS RECOMMENDED THAT A SERIES PROTECTION RESISTOR BE BUILT INTO THE MICROPHONE PLUG AND LEADS WHEN USING AN EXTERNAL VOLTAGE SOURCE | ||
The pyroelectric sensor is activated when you change the IR radiation that reaches it. It is powered by 12 V and connected to the mic input of a XO1. When the sensor is activated, the program emits a 1000 Hz tone and displays a photograph of the moving hot body that triggered the alarm. | The pyroelectric sensor or Passive Infrared Sensor (PIR) is activated when you change the IR radiation that reaches it. It is powered by 12 V and connected to the mic input of a XO1. When the sensor is activated, the program emits a 1000 Hz tone and displays a photograph of the moving hot body that triggered the alarm. | ||
The PIR sensor needs a supply of 9V minimum, its output is relay NC (normally closed R=0 ohms) | The PIR sensor needs a supply of 9V minimum, its output is relay NC (normally closed R=0 ohms, open circuit when triggered) | ||
[[File:PIRsensor.jpg]] [[File:PIRsensorconnections.jpg]] | [[File:PIRsensor.jpg]] [[File:PIRsensorconnections.jpg]] | ||