3.6V in MAX.
pin1 Vcc
pin2 GND
pin3 SerialCLock
pin4 SerDAta
Least sensor seems to work.
#include <Wire.h>
#include <Adafruit_BMP085.h>
Adafruit_BMP085 bmp;
void setup() {
Serial.begin(9600);
bmp.begin();
}
void loop() {
Serial.print("Temperature (C)= ");
Serial.print(bmp.readTemperature());
Serial.print(" Pressure (Pa)= ");
Serial.print(bmp.readPressure());
Serial.print(" Altitude (m)= ");
Serial.print(bmp.readAltitude());
Serial.println();
delay(200);
}
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
https://stevepedwards.today/play.google.com/store/apps/details?id=com.rdh.mulligan.myelevation&hl=en
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 