TinyHiker uses a pressure/temperature sensor for altitude and temperature measurement, a 9DOF- (Gyro + Accelerometer + Magnetometer) for pedometer, a magnetometer for the compass, and a real time ...

Manufactured by Hope Microelectronics, the HP203B is a high-precision barometer and altimeter that measures the pressure and the temperature by an internal 24-bit ADC and compensates using a patented ...