Fresh hacks every day
Now you can capture pictures of our furry friends by building a motion activated wildlife camera. [Doug Paradis] took his Air Freshener hack and used it to trigger a camera. The white dome in the picture above is the PIR sensor from an Air Wick Freshmatic, along with a cheap keychain camera and an MSP430 microcontroller. He used one of the chips that came with the TI Launchpad, a transistor, and … [Read more...]
[Doug Paradis] took a good look inside the Air Wick Freshmatic Compact i-Motion and then stole all the parts for other projects. We've looked at adding a manual spray button or making air fresheners Internet enabled before. Those models didn't have parts that were all that interesting, but this one has a passive infrared motion sensor. You'll also gain three switches, a PNP transistor, and an … [Read more...]
This alarm system senses motion and then alerts you by phone. [Oscar] had an old external modem sitting around and, with some wise hardware choices, he came up with a simple circuit to use it. First up is the PIC 16F628A chosen because it doesn't require an external crystal. This connects with the modem via a DS275 RS232 transceiver because it requires no external parts for connection. The final … [Read more...]
There are cars that increase the radio volume as you drive faster, and video games that ramp up the music as your gameplay improves (we're looking at you SSX Tricky). Now you can add that feature to your workout with [Polymithic's] Motion Feedback MP3 Player. It uses a passive infrared sensor to detect motion so there's no need to wear any electronics. But if you used some Bluetooth headphones you … [Read more...]
[ladyada] has a freshly-published and amazingly thorough tutorial on passive infrared (PIR) motion sensors. Most often seen in security floodlights and automatic doors, in creative hands these sensors can be put to other uses—cat flaps, camera triggers and purely artistic applications—as you'll see in several demo projects and videos. For the curious, the tutorial provides a good amount of … [Read more...]
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