December 30 2014

During tonights meeting Andrew brought in a new off-the-shelf GPS unit. It’s a tiny Venus638FLPx chip on a breakout board that spews out NMEA messages over serial.

This will replace our old GPS board that was very large at this point a couple of generations old. It was a good chip that gave us binary data including pseudoranges! But now that we’re moving towards our own GPS implementation we just need the basics.

Work is continuing on a revision of our raw GPS board with a CPLD to transform the parallel interface into a more microcontroller friendly SPI format.


The new GPS board