Ok, I got the RCTimer GPS & I2C board working with the smaller Crius V1.0 board. I used U-Center to config the baudrate to 115,200 and the sampling rate to 5hz. Seemed hard to get the config setting changes to stick. I could never get the protocal to stay on only "NMEA", it would always switch back to "0+1+2 - UBX+NMEA+RTCM". Does seem to matter because the it's working with the board. I used this as a general guide on how to write the settings in u-center: http://code.google.com/p/ardupirates/wiki/UbloxGPSTutorial
I never had to flash the RCtimer IC2 board, it must already have the R33 code flashed to it. Once you hook it up the GPS light stays a constant green, never changes even when it aquires satalites. On the IC2 board, powers up to a slow flash and once it has a certain # of satalites locked, it starts flashing on/off 3 times fast, then pauses, then repeats. I installed everything on my quad and it seems to work. Need to tweak some of the PIDs. Few questions:
--What does Pos, PosR, and NavR do?
--When I activate GPS Hold, I also activate Level, Baro and Mag. Is this correct? I just want to it hold in a fixed position in the sky. I
--I see on the config GUI that ther is a Alt reading under GPS. Does the code ever use this?
--I have a DJI 450 with the GPS receiver mounted out about 2" out one arm. Is this the proper way to mount it?
--Any recommended GPS related PID setting to get this to really lock in? I running Dev 20120622. Have people been successful getting this to really lock in? On my setting now, it wanders +/- 5 meters. It was a bit windy though. Will try it when it's calm.
--Is there a android bluetooth app for Dec 20120622 of the firmware? It would be really nice not to have to hook it up to the laptop each time.