Airspeed ETS (I2C). Driver for the EagleTree Systems Airspeed Sensor. Has only been tested with V3 of the sensor hardware. Notes: Connect directly to TWOG/Tiny/Lisa I2C port. Multiple sensors can be chained together. Sensor may be in the proprietary mode (default) or in 3rd-party mode. In 3rd-party mode you must define AIRSPEED_ETS_3RD_PARTY_MODE. A eLogger is needed to set sensor to 3rd-party mode, which is supposed to be more reliable than the default mode. Sensor module wire assignments: - Red wire: 5V - White wire: Ground - Yellow wire: SDA - Brown wire: SCL