Binary format for serial output?

I wondered if it might make sense to support both text (as it does now) and a "raw" TX method for the ArduPilot. With the "raw" mode you could save a few (possibly a lot as a %) bytes per transmission which could mean a faster rate of messages and le

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Hacking a cheap bluetooth GPS unit?

I wondered if anyone had tried hacking a cheap bluetooth GPS receiver? There's no lack of them on eBay and with a bit of tinkering it should be possible to disable the bluetooth portion (in case of 2.4GHz interference) and find some kind of serial bi

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