It’ll walk you through the basic concepts, then apply that knowledge in a simple op-amplifier circuit. If you’re a little shaky when it comes to understanding and working with amplifiers this tutorial is for you. Video available if you click through to the link. ![]() When they pee on the sensor, it pees right back on them. put together a urinating-drunkard deterrent by placing a humidity sensor in the (achem…) trouble-spot and a small tube above. If you have a problem with folks peeing on your stoop then this is the answer. We’d be interested in seeing what you come up with. Security cameras come to mind but this could be useful in a lot of projects. This time around he’s got eight of them running on one computer at 60fps. has been involved in the NUI Group and in writing drivers for the PS3 Eye. Of course, if this were an incredibly complicated piece it probably wouldn’t have ended up in a links post. Not every hack has to be a beautiful masterpiece, they just need to be fun. It’s a track for a steel marble to roll around in with a magnet on a rotating wheel to pick it up and start it over again. Here’s a quick and dirty kinetic sculpture. Check out a couple of videos after the break to see the hardware, and some game play.Ĭontinue reading “Multitouch Tower Defense Uses Physical Towers” → Posted in Multitouch Hacks Tagged infrared, ps3 eye, reacTIVision Hackaday Links: January 31st, 2010 chose the reacTIVision software package to process the input from the camera. As for the multitouch detection, the hardware uses a series of UV LEDs along with a modified PS3 eye camera. A projector shines through another acrylic window on the side of the unit, reflecting on a mirror positioned at a 45 degree angle. The surface is a piece of acrylic topped with some light diffusing material. The controller itself is pretty straight-forward. Just place that piece where you want to build your next tower, and then select the tower type from the list. There is a frustum-shaped game piece resting on the surface. In the image above you can see that the game board for a tower defense game is shown on the display. Arthur built a multitouch interface that uses objects as part of the control scheme. If you’re tired of playing flash games with a mouse, perhaps you’ll draw inspiration from this project. Posted in Playstation Hacks Tagged opencv, playstation eye, ps3 eye Multitouch Tower Defense Uses Physical Towers From an actual eyeball tracker ( seriously), to an interactive projection globe with touch tracking to even a physical tower defense game. Seeing as the Eye has been out for over 7 years now, it has been used in quite a few hacks since then. ![]() It’s capable of 60fps at VGA, which we admit isn’t amazing, but at $7, we can’t complain - if you drop down to QVGA (320×240) you can go up to 120fps.įrom there you can play around in OpenCV to your heart’s content. He’s using a library called video for Linux with an application called qv4L2. The PS3 Eye has a standard USB interface, and after messing around with it a bit in Linux, was able to adjust the frame rate settings for his application. Now that it’s kind of obsolete, you can have it for as little as $7 from places like Amazon! ![]() As it turns out, the PS3 Eye is actually a pretty capable little camera. He needed a decent webcam that could do higher than standard frame rates. ![]() Edit /etc/udev/rules.d/70-alsa-permanent.Has started getting into OpenCV and digital control system projects.The subject came back recently in the comments section of a post about Tmall Genie smart speaker, via a post by Michaela Merz which compares PS3 Eye against Respeaker Mic Array v2.0 ( $69), and explains how to setup PS3 Eye’s microphone array in Raspberry Pi 3. PS3 Eye was actually part of the article we published two years ago, and the camera performed well in comparison to more expensive development kits. You may even already have one, so no need to spend extra money. If you’ve already got a Raspberry Pi 3/4 board, you can get cheaper options such as ReSpeaker 4-Mic Array for $25, but nothing beats the price of Sony PS3 Eye camera that comes with a 4 microphone array and sells on Amazon for around $7.5. The price of smart audio development kits varies a lot from $500 for Intel Speech Enabling Developer Kit to $129 for an Allwinner R18-based 3-Mic Far-Field Amazon AVS Development Kit, and $99 for ReSpeaker Core v2. Almost exactly two years ago to the day, we published an article showing how microphone arrays performed against a single USB microphone, and the latter started to have a poor wake word detection success rate at around 3 meters array even in a silent room, and it got worse with white noise or background music, while the microphone arrays would pick up the wake word with a much higher success rate in all conditions.
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