SAMD21 LoRa development board with GPS

Michael Krumpus designed and built a SAMD21 development board with LoRa radio module and GPS receiver, that is available on GitHub: I’ve been doing some LoRa projects lately in order to learn as much as I can about this exciting new radio technology (see this LoRa mesh networking project and this LoRa weather station). ATmega328-based […]

GPS Disciplined Oscillator review and teardown

Andy Brown did a teardown of a GPS Disciplined Oscillator: The design did actually surprise me. I was expecting to see an OCXO pulled from something else together with a modern GPS unit and an MCU to co-ordinate the synchronisation all mounted on a custom PCB. What we’ve actually got is an entire Symmetricom GPSDO pulled […]

Yet another Arduino clock

Sverre Holm blogged about his Arduino clock project: Its main features are: Controlled by a GPS module outputting data over an RS232 serial interface, and handled with the TinyGPS++ library Shows raw GPS data such as UTC time and date, position, altitude, and number of satellitess Shows derived GPS data such as 6-digit locator Finds local […]

Teensy GPS Logger redesigned in smaller version

An update on J3tstream’s Teensy GPS logger project we covered previously: The last and final design, the Teensy and GPS is directly powered from 3.7v li-on batt.  Power button in red, black button to enable charging in case of using +5v AC adapter.   SDCard socket is mounted at the back of pcb. Project info at […]

DEFCON 22: WarKitteh – cat on the warprowl

Why do the wardriving yourself when your cat can do it for you? Gene Bransfield gave this presentation at the recent DEFCON 22 conference, describing his efforts to use domestic pets wearing WiFi sniffer/GPS logging gear to essentially warprowl for WiFi hotspots. There’s also DoSdog, a standard pooch wearing a backpack concealing a Hak5 Pineapple, […]

GPS for graphing calculators

Kerm Martian from Cemetech has documented a GPS for graphing calculators project build: Graphing calculators are nothing less than powerful pocket computers, capable of doing many of the same things as smartphones, desktops, and laptops. Given that they have reasonably fast processors, a display, memory, and ports to interface with the outside world, I set out […]

Simple Propeller GPS status display

If you’ve ever wanted to know how many GPS satellites are receivable at your location here’s a good beginneer’s Propller project that provides the answer. Its a GPS status display project Nick Ernst developed written in SPIN code and using a Propeller Mini Board, VPN11513 GPS Receiver, shift register and 7-Segment LED display. “The Propeller […]

‘GPS to Xbee bridge’ project

ezflyr posted another cool project in the project log forum, the GPS to Xbee Bridge: Here is my latest project, a ‘GPS to Xbee Bridge’. This project utilizes a USGlobalsat BR-355 GPS receiver, and an Xbee module to wirelessly transmit a GPS-derived time/date info packet to a variety of home-brew clocks around my home! These clocks […]