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 (attitude) is small.
11 Currently the only supported sensor is the HCSR04 sensor.
17 | Mode | Trigger | Echo | Inline 1k resistors |
18 | ------------- | ------------- | ------------- | ------------------- |
19 | Parallel PWM | PB8 / Motor 5 | PB9 / Motor 6 | NO (5v tolerant) |
20 | PPM/Serial RX | PB0 / RC7 | PB1 / RC8 | YES (3.3v input) |
22 Current meter cannot be used in conjunction with Parallel PWM and Sonar.
26 | Trigger | Echo | Inline 1k resistors |
27 | ------------- | ------------- | ------------------- |
28 | PB0 / RC7 | PB1 / RC8 | YES (3.3v input) |
30 Current meter cannot be used in conjunction with sonar.