In this project a 16-bit PIC is used to build an accurate frequency reference synchronized to a GPS clock. This device can serve as an accurate frequency counter that can count to 50 MHz with 1 Hz accuracy. It can also be used to generate GPS-locked output signals as a frequency reference or as a […]
Open GPS Tracker is a small device which plugs into a $20 prepaid mobile phone to make a GPS tracker. The project use microcontroller AVR ATTINY84 as main processor. The Tracker responds to text message commands, detects motion, and sends you its exact position, ready for Google Maps or your mapping software. Mike release the […]
The GPS Surveyor is an effective tool for acquiring precise position data for surveying and vehicle tracking applications among others. Two GPS receivers gather the data, which is then downloaded to a laptop for processing. The system comprises two modules, each including a GPS receiver and antenna, a ZigBee transceiver and antenna, and both accelerometers […]
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