Spynet Laser Trip Wire

Product Information

S. government and authorized for export only to the country of ultimate destination for use by the ultimate consignee or end-user(s) herein identified. For those who prefer instant gratification, [dekuNukem] is doing a small production run and offering them up on Tindie. With cables, you can be sure that triggering a sensor will be detected by the puzzle controller and won't ruin the experience.

I am choosing to use a LED indicator as my actuator, but this could be an alarm, SMS text, or even a door lock.

The Laser Doorway Tripwire is a great way of gaining supporting evidence and supporting your own observations. dekuNukem] admits that the 5 Hz scan rate means a sufficiently fast moving adversary might slip past the sensor, but if they’re trying that hard to see what’s on your monitor, they probably deserve a peek. Laser Trip Wire Illuminators have been recently adopted by US Navy EOD and are now deployed in the operational forces. Unlike other Laser Doorway Alarms, this device combines a transmitter and receiver in one box taking away the hassle of aligning two separate units. In this tutorial, you will learn how to set up a laser tripwire sensor and trigger an actuator, in this case an LED, upon the beam being broken.

As much as I hate The Internet of Things, a remote hosted version of this that could be set up to work remotely over wifi connection, without being hooked to a computer, but could trigger a webcam and microphone then I could access from my smartphone half the world away would be very useful. The warning could be anything from a loud siren to a hushed signal sent to a central monitoring station. The Ghost Hunting Doorway Alarm Tripwire can be used during investigations as a trigger when activity is provoked by the User, Medium or Seance.If you enjoyed making this project, then you can find many more GPIO Zero guides in our GPIO Zero Essentials book! Hi, this tutorial is about "Grove Light Sensor" based project, there are two versions of the project, and as you read it it's a LASER Tripwire Alarm, one that you can set with a simple push button, the other one is more secure and requires a passcode. The 1N4007 diode (D2) connected in antiparallel with the electromagnetic relay (RL1) functions as an “orthodox” flywheel diode to protect the electronics from damage due to the back-emf pulse generated in the relay coil’s inductance when T1 turns off. Also, if I ever change how the circuit is wired I only have to change the Pin Definition as opposed to changing every line of code where the pin number is mentioned.