Because im not very happy with the internal magnetometer of the revolution because its too near to disturbing magnetic fields (250 quad) i tried to activate the internal mag of the ublox GPS which is mounted on a 20cm mast. Fortunally, the wires were already soldered but cut off at the end of the cable and hidden under shrinking tube. Soldering a plug for the flexi port was simple, the configuration as I2C bus was done, but the bus threw errors in the status display. ""I2C port is working but there are acknowledgement errors." is the status message. So ive googled around and read about the pull up resitors between VCC and both I2C (SLC,SDA) wires. Checking the resistance on the board shows more than 400k Ohm. So will soldering a 4.7K or 10K resistor between VCC and SDA and VCC and SLC solve my problem? In not that electronics expert.
Udo