The magnetic compass has been a crucial navigational tool for around a thousand years or so, perhaps longer. While classical versions still work perfectly well, you can now get digital magnetometer… ...

Watch the video below to learn more about this awesome DIY Arduino watch that uses a GY-87 sensor board, that offers three sensors in the form of HMC5883L for the compass, BMP085 for the pressure ...

Arduino (used here) makes use of the avr-libc math library to perform the calculations. Posted in Arduino Hacks Tagged avr-libc , compass , magnetometer , math , trigonometry Post navigation ...