calibrate roll and pitch (heeland pitch)

[FabianT]

Hi,

how can I calibrate roll and pitch? When I level my pilot, the roll axis is shown as pitch. Further the MPU is not mounted in line with any of the boat axis. Since I read the data into opencpn and would use heel as input for more correct TWA calculation it would be good if that heel is correct.

//Fabian

[ironman]

Hi,

how can I calibrate roll and pitch? When I level my pilot, the roll axis is shown as pitch. Further the MPU is not mounted in line with any of the boat axis. Since I read the data into opencpn and would use heel as input for more correct TWA calculation it would be good if that heel is correct.

//Fabian

If you really need proper roll and pitch, I guess for now you'd need to reorient the IMU. See this thread https://forum.openmarine.net/showthread....2#pid17922

[seandepagnier]

Hi,

how can I calibrate roll and pitch? When I level my pilot, the roll axis is shown as pitch. Further the MPU is not mounted in line with any of the boat axis. Since I read the data into opencpn and would use heel as input for more correct TWA calculation it would be good if that heel is correct.

//Fabian

pitch and roll cannot be distinguished without setting the heading offset.   Try adding or subtracting 90 from this.

[FabianT]

Hi,

how can I calibrate roll and pitch? When I level my pilot, the roll axis is shown as pitch. Further the MPU is not mounted in line with any of the boat axis. Since I read the data into opencpn and would use heel as input for more correct TWA calculation it would be good if that heel is correct.

//Fabian

pitch and roll cannot be distinguished without setting the heading offset.   Try adding or subtracting 90 from this.

Thanks. Certainly, I get pitch and roll correct setting this offset. About calibration: Will it do some "3d calibration" if I try to heel/pitch the boat? Like tacking in waves etc?

//Fabian

[seandepagnier]

yes, tacking while heeling works to perform a 3d compass calibration. It is only needed to give accurate heading while heeled.