May 14, 2019 · We have built a very simple Motion detector circuit here. We are using a HC-SR501 PIR Sensor, an LED (which will glow whenever there is a motion infront of the sensor) and resistor.

Aug 6, 2017 · The PIR (Passive Infra-Red) Sensor is a pyroelectric device that detects motion by sensing changes in the infrared (radiant heat) levels emitted by surrounding objects.

Jan 18, 2006 · We need a motion detector (or some sort of sensor that is activated by an interupted beam rather than by physical contact), that can alternately trigger this On/Off sequence, just like closing and opening a circuit by physically turning a lightswitch on and off -- a remote on/off switch. Doesn't seem like it should be too difficult.

May 27, 2017 · Hello dear friends. I need your valuable help for a little circuit I'm designing. It is a small circuit to incorporate a delay to a PIR motion sensor that activates a spray that releases compressed air to drive away birds, cats, dogs etc. The detail is …

Jun 18, 2022 · I am a college student doing hobby project, I need to design an IR bream break detector which would work with IR Transmitter and IR Receiver to detect beam break between transmitter and receiver in 1 meter range. Can you please suggest components and circuits for same, preferably requiring 5V...

Dec 13, 2019 · I'm attempting to set up and wire 8 PiR motion sensors, however by the wiring diagram, some of the terms used for some of the wires kind of confuse me a lot. One brown wire reads off as fire wire and another blue one reads off as null (or zero) wire while the other two, being yellow and...

Jun 23, 2010 · I am in need of a circuit to "fool" a motion sensing lighting control. I have a motion sensing lighting control in my office which unfortunately is behind a bookshelf and so I have to get up every 20-30 minutes and trip it to turn my lights back on. …

Oct 16, 2024 · The reason I don't want the Arduino is that there isn't any room in the unit for it. Also, the cost of an Arduino is much too high for this project. I wanted to put a horizontal rolling glass cylinder on a plinth and have it start turning automatically when triggered by an infrared PIR motion sensor placed on the front of the plinth.

Sep 20, 2010 · Similar threads M 555 Timer Servo Control with Push Button and Auto Return mactonight Mar 19, 2025 Electronic Projects Design/Ideas/Reviews Replies 17 Views 2K Mar 21, 2025 danadak P Infrared PIR Motion Sensor without an Arduino Pruitt Oct 16, 2024 Electronic Projects Design/Ideas/Reviews Replies 5 Views 3K Oct 18, 2024 Pommie P Q Alarm sensor ...

Jul 20, 2014 · Is there such a device that is relativity cheap but laser is to dangerous for application intended. Most sensors use IR which during daylight use is perhaps worthless. Thinking about IR but using a pulsed signal applied to the IR. This needs to cover a radius of 8-10 feet. Still researching but...