Homemade GPS receiver update

Big_GPS3

Andrew Holme posted an update on his DIY GPS receiver  we covered previously:

This is now a truly portable, battery-powered, 12-channel GPS receiver with turnkey software, which acquires and tracks satellites, and continuously recalculates its position, without user-intervention. The complete system (below, left) comprises: 16×2 LCD display, Raspberry Pi Model “A” computer, two custom printed-circuit boards, commercial patch antenna and Li-Ion battery. Total system current consumption is 0.4A for a battery life of 5 hours. The Raspberry Pi is powered through the ribbon cable linking its GPIO header to the “Frac7” FPGA board and requires no other connections.

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