Arduino security with frickin’ laser
posted Jan 3rd 2010 9:00am by Mike Szczysfiled under: arduino hacks, laser hacks, security hacks
[over9k] used his Arduino to set up a laser trip wire. The laser is mounted along side the Arduino, reflects off of a mirror, and shines on a photoresistor that interfaces via a voltage divider. The signal from the voltage divider is monitored for a change when the laser beam is broken. [over9k] set things up so that a webcam snaps a picture of the intruder and Twitters the event for easy notification. Video after the break walks through each of these steps.
This build is a bit rough around the edges but unlike other laser trip wires this keeps all the electronics in one place. The laser interface could be a bit more eloquent, and we’re wondering just how much current it is pulling off of the Arduino pins. But if you’re bored and have this stuff on hand it will be fun to play around with it.
Twittering Laser Tripwire with Webcam Capture
Video Link...
http://www.youtube.com/watch?v=weQQ363RmKQ&feature=player_embedded
tagged: laser, security, trip wire, twitter, webcam
Go there..
http://hackaday.com/2010/01/03/arduino-security-with-frickin-laser/
Laser triggered photography
posted Sep 30th 2009 6:30am by Jakob Griffithfiled under: digital cameras hacks, laser hacks
Popped balloons or bullets fired into apples, anyone can photograph with a quick sound based camera rig. Lasers have been used forever in motion detection. And even door bell chimes have been used before for remote camera shutter releases. No, [SaskView] wanted to go further and created his Laser Triggered High-Speed Photography setup, to photograph (of all things) milk splashes. We liked the simplicity of the project however; requiring no programmed microchips or overly complicated circuitry – rather he took a quick trip to the local dollar shop, used the amazing CHDK firmware, and he produced perfect results every time.
[Update: CHDK, not CHKD firmware. My mind must be elsewhere. Thanks jbot and agent smith]
tagged: camera, chdk, high speed, laser, motion, photography, sound, triggerGo there...
http://hackaday.com/2009/09/30/laser-triggered-photography/
- Arduino security with Lasers and High Speed Photography
- Arduino security with frickin’ laser - Hack a Day
- Twittering Laser Tripwire with Webcam Capture
- YouTube - Twittering Laser Tripwire with Webcam Capture
- Laser triggered photography - Hack a Day
- High speed photography - Hack a Day
- Laser Dance Pad - Hack a Day
- Remote shutter release doorbell - Hack a Day
- Laser Triggered High-Speed Photography
- How-To: Expand your camera with CHDK - Hack a Day
- xkcd: Charity
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