The I2CKeyPad8x8 library implements the reading of a 8x8 keypad by means of a PCF8575. Smaller keypads, meaning less columns or rows (e.g. 5x4) can be read with it too. Sometimes you need to control ...
The library also includes a function for computing the tilt-compensated heading for those looking to use the LSM303 as a tilt-compensated compass. Download the archive from GitHub, decompress it, and ...