3 A sonar sensor can be used to measure altitude for use with BARO and SONAR altitude
6 The sonar sensor is used instead of the pressure sensor (barometer) at low altitudes.
7 The sonar sensor is only used when the aircraft inclination angle is small.
12 Currently the only supported sensor is the HCSR04 sensor.
18 | Mode | Trigger | Echo | Inline 1k resistors |
19 | ------------- | ------------- | ------------- | ------------------- |
20 | Parallel PWM | PB8 / Motor 5 | PB9 / Motor 6 | NO (5v tolerant) |
21 | PPM/Serial RX | PB0 / RC7 | PB1 / RC8 | YES (3.3v input) |
23 Current meter cannot be used in conjunction with Parallel PWM and Sonar.
27 | Trigger | Echo | Inline 1k resistors |
28 | ------------- | ------------- | ------------------- |
29 | PB0 / RC7 | PB1 / RC8 | YES (3.3v input) |
31 Current meter cannot be used in conjunction sonar.