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hcsr501 [2016/05/24 15:35]
GoHoHa created
hcsr501 [2016/05/24 15:40]
GoHoHa [Wiring]
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 ====== Movement detection by PIR sensor HC-SR501====== ====== Movement detection by PIR sensor HC-SR501======
  
 +===== General =====
  
 There are fairly cheap PIR sensors available under the name **HC-SR501**. There are fairly cheap PIR sensors available under the name **HC-SR501**.
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 Measured at a sample it uses 35 µA if idle. If movement is detected the OUT pin goes from 0.0 V to 3.3 V and uses than 190 µA. Measured at a sample it uses 35 µA if idle. If movement is detected the OUT pin goes from 0.0 V to 3.3 V and uses than 190 µA.
 +
 +===== Wiring =====
  
 The PCB has a voltage regulator, a HT7133-1, which is used to make a stable 3.3 V from the VCC (4.5 V to 20 V). So we drive the combination of Env-Senso Board and HC-SR501 by 4 AA batteries and solder additional pins to the PCB as power source for the EnvSensor. The PCB has a voltage regulator, a HT7133-1, which is used to make a stable 3.3 V from the VCC (4.5 V to 20 V). So we drive the combination of Env-Senso Board and HC-SR501 by 4 AA batteries and solder additional pins to the PCB as power source for the EnvSensor.
  
 {{ :​pir2env.png?​direct&​500 |}} {{ :​pir2env.png?​direct&​500 |}}
 +
 +//Add changes to monitor battery level again!//
 +===== Housing Integration =====
 +
 +//tdb//
 +
 +===== Usage Example with OpenHAB =====
 +
 +
 +//tdb//
 +
hcsr501.txt · Last modified: 2016/05/24 15:40 by GoHoHa