Bosch BMP180 Pressure Sensor

3.6V in MAX.
pin1 Vcc
pin2 GND
pin3 SerialCLock

pin4 SerDAtaSeems to be a calc prob with height to pressure here. Im about 144m +/-7m by phone GPS ASL ..? Not 28m shown:

Least sensor seems to work.

I got a better Gplay App for elevation – it shows me at 84 m above sea level in Illogan, Cornwall:
My Elevation
RDH SoftwareTravel & Local
Also for other reference measurements I have a cheap Chinese £10 digital weather station clock coming soon:
Elenxs CX-506 Digital LCD Thermometer Hygrometer Barometer