- Raspberry Pi
- Digital & analog sensors
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...where a bunch of geeks got together to make other people's ideas come to life.
This is a high-precision pressure sensor with a built-in temperature sensor. The range of this tiny breakout pcb is 30 to 110 kPa with an absolute accuracy down to .003 kPa. This board uses piezo-resistive technology for stable, well rounded, accurate and linear results.The sensor supports 1.8V to 3.6V DC. The breakout board is designed to connect directly to a microcontroller via I2C bus.
The pressure sensor was design with prototyping in mind. The pins are .1" apart making it ideal to use with a breadboard as well as .1" perfboards. The analog and digital supplies (VDDD and VDDA) of the BMP180 are not tied together, so different supply and logic voltages may be applied. For stadard use, simply power both pins with 3.3V. The I2C lines are also pulled high with 4.7kΩ resistors.
An Arduino example can be found here. (This sensor uses the same code as the BMP085)