Pressure Sensor (BMP280)
The Stratux supports multiple ways to connect a pressure sensor (BMP280), for more precise traffic altitudes (see here. The sensor can easily be found on various online shops, and usually comes on a small breakout board to make it easy to connect.
- You can connect the BMP280 to the Raspberry Pi i²c pins: Find the PI's pinout here: https://www.raspberrypi.org/documentation/computers/os.html#gpio-and-the-40-pin-header and connect
VCC to 3V3 power
GND to GND
SCL to SCL
SDA to SDA
There are also pre-built adapter boards available on the internet, that allow you to solder the breakoutboard directly on the board without having to use jumper cables.
- You can connect it to a TTGO T-Beam. The pins of the T-Beam and the BMP280 breakout usually match up, so you can solder directly onto the board. Connect
VCC to 3V3
GND to GND
SCL to Pin 22
SDA to Pin 21
See also: https://github.com/lyusupov/SoftRF/issues/32
VCC to 3V3 power
GND to GND
SCL to PB6
SDA to PB7