Minimal metal detector made with an Arduino and a coil of wire

For an easy DIY metal detector setup, look no further than this project by creator “rgco.” 

The handheld device uses a 20-60 turn coil of 26AWG enameled wire, connected across an Arduino Uno or Nano’s pins 8 and 10. A series of pulses is continuously sent out by pin 10, which are delayed in reaching pin 8 according to the inductance across the coil. As this coil approaches other metallic objects, the effective inductance changes, thus varying the delay in the signal reaching pin 10.

This effect is sensed by the Arduino, outputting chirps on a buzzer as audio feedback when metal is nearby. To convert it into a practical device, the Nano configuration is stuffed into a Tic Tac container, with the coil held at a distance with two skewer sticks.

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A Massive Upgrade Makes the Classic Super Nintendo Super Scope Work on Modern TVs

Despite a renaissance in outdated gaming tech, there’s a small blip in the history of retro gaming hardware that has all been all but abandoned in the emulation scene: light guns. The way the technology worked simply isn’t compatible with modern TVs and screens, so if you want to get something like the Super Nintendo’s Super Scope working again, you either need to find an old tube TV, or perform a monumental hack on the hardware like Andy West did.

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AM/FM/SW Radio Receiver – Si4730 / Si4735

This Arduino radio receiver has an attractive look and nice features using an inexpensive color TFT / Arduino and fell componets.

It includes the indication of the frequency in large numbers in the style of vintage seven segments, two bargraphs for indicating the signal strength, selection of 7 BW filters for AM, indication of the wavelength of the band, 2 color themes, Stereo/Mono indication and 14 bands for coverage of LW / MW / SW / CB, ranging from 100kHz to 30MHz and the commercial 64-108MHz FM band.

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PlayStation 5 Will Apparently Support Plex at Launch

Next-gen gaming is understandably the main selling point of the PlayStation 5, but that’s not all the new console will have to offer when it launches next month. Sony has confirmed that the PS5 will support multiple streaming apps at launch, and now one can add Plex to that list.

While the likes of Netflix, Hulu, and Amazon Prime Video have been dominating the busy streaming market, Plex has managed to carve a niche for itself by offering more than just streaming. In addition to a wide selection of movies, TV shows, web shows, and live channels, the service doubles as a media hub, allowing users to organize their personal photos, music, and movies and access them from multiple devices.

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