News: DIY Laser Tripwire System That Tweets Whenever Sharks Swim Past
If you've ever wished you could keep tabs on the fish in your aquarium, Justin of Antipasto Hardware Blog has just the mod for you! He created this DIY "shark detector" that sends out a tweet whenever Bruce the shark breaches a perimeter that he set up in the tank. Please enable JavaScript to watch this video.
He set up a laser and an Arduino with a light sensor so that whenever Bruce obstructed the laser, the light sensor would pick up the difference in the light level and send out an alert. Images via ggpht.com He created an app and the Twitter handle @BruceSharkAlert so that whenever Bruce gets too close to the diver in the tank, it sends out a pre-programmed tweet. Check out Justin's post to learn more and see the code that makes this ridiculous, ingenious contraption work. How else could this shark intrusion system be used?
If your calculator app has disappeared from your iPhone (and the Control Center on your iPhone), don't panic. Beginning with iOS 10, Apple gave users the option to remove Apple stock apps from our Home screens. When the feature first became available, I started deleting every Apple stock app that I didn't use.
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We added a tin can, with both ends cut off, around the detector. This narrowed its range so that only a warm animal at the bait would trigger the light to turn on. The computer records 5 seconds of video when the webcam sees the light go on or off.
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Apr 01, 2019 · Apple even treats their limits this way. When you set a time limit on an app in Screen Time, your iPhone or iPad will let you use the app uninterrupted until you pass that limit.
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