Tag Archives: AT42QT1010

PSDR is a pocket-sized HF SDR transceiver with VNA and GPS


This outdoor-friendly radio can evolve and improve over time.


The PSDR, which some of you may remember was a Hackaday Prize finalist, is a standalone pocket-sized software defined radio ideal for those looking to stay connected while hiking or traveling abroad. Created by Michael Colton, the open-source device was originally designed for backpacking use by ham radio operators with complete coverage up to about 30MHz.

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The LiPo battery-powered device — which recently made its Kickstarter debut — packs a 168Mhz ARM Cortex-M4-based MCU, a color LCD for its waterfall display, a single knob for selecting items from the screen, dual DDS frequency synthesizers, a built-in microphone and speaker, a magnitude and phase measurement chip, digitally-controllable instrumentation amplifiers, vector network analysis and a GPS receiver — all housed in an aluminum case.

The self-contained radio boasts an innovative interface equipped with pair of AT42QT1010 capacitive touch sensors, in addition to a USB connector for uploading firmware, keyboards and possibly remote Internet use.

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“It’s built for rugged portable use. It is designed to be a flexible platform for development, a learning aid, and and a useful instrument for electronics enthusiasts,” Colton shares.

Pending all goes to plan, the Maker aspires that with the necessary crowdfunding, he will be able to enhance the PSDR’s design to include a media player, an e-reader and picture viewer, improved audio, GPS mapping, and serve as as an emergency location beacon. Currently seeking $60,000 on Kickstarter, you can learn all about the project here.

Ping-pong gets high-tech with AT42QT1010

Every hip, trendy new office seems to have a ping-pong table sequestered in the corner of a break room. Even if that that has become common practice in the contemporary office, this concept from across the pond at SI Digital has changed the way the game is played!

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With SI Digital’s over-the-top office ping-pong table, each player has an RFID tag embedded into their personal paddle. When they approach the table, they simply wave their handle over a sensor and their image appears on a nearby LCD screen and a game is ready to commence.

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Also, instead of tirelessly arguing over the manually tracked score, the team installed two capacitive touch sensors below the table that allow a quick click to add a point under each player’s image. These capacitive touch sensors, built by Adafruit and powered by the Atmel AT42QT1010 were chosen for their ability to trigger precisely after very slight and effortless touches.

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Alongside the table, the innovative team placed an Arduino Pro Mini (ATmega168)-powered RFID reader covered with several LEDs to give visual feedback upon being scanned. The RFID tags provide the ability for games to start instantly and for rivalries to be upheld. The team at SI Digital used Node.js and Socket.io to develop an application that gave them the ability to track their live scoring and lifestime statistics. Game on!

For more information on this new spin on the old school Ping-Pong table, take a look at SI Digital’s project review here.