A PIR Sensor can tell when something nearby moves. The sensor detects the pattern of infrared energy in its surroundings. If the pattern changes, the sensor outputs a high signal. The Propeller microcontroller only needs to monitor this signal with an I/O pin to know if something is moving around nearby. Circuit Parts (1) PIR Sensor Rev B (#555 ...
Rev B of this sensor provides many updates and improvements from Rev A. If your PIR Sensor’s PCB does not read “Rev B,” please use the information found in the Revision History section on page . 5. For the Wide Angle PIR Sensor, search for product “28032” at Features Detect a person up to approximately 30 ft away, or
6 / 64 P/N 145797999-2 • REV B • ISS 19MAR12 24 25 ST400 CP 26 SB01 EN: Installation Manual Introduction The VE735 and VE736 are PIR motion sensors. They have a patented verified PIR technology. Installation guidelines The technology in this detector resists false alarm hazards. Nevertheless avoid potential causes of instability, such as:
May 06, 2021· How is the PIR output connected? If connected from input to Gnd only, you are probably picking up electrical noise. Put a 10k R from 5v to the input and PIR to Gnd. The input will be held high by the R until the PIR switches to Gnd. You can also use internal pull up resistors (use the search box at top of page). Weedpharma