"I had to include an Arduino.h file in order to even get it to compile.  What I can't figure is that the Arduino.h file is empty.  Go figure."

"When I tested this code

int16_t temp_alt = sonar->read();if(temp_alt > 200) {do_loiter_time();

I got this error:
 error: base operand of '->' has non-pointer type 'AP_RangeFinder_analog'

the hall board kills me again."

"I tested your code...
AP_HAL::AnalogSource* testain;testain = hal.analogin->channel(1); // read A1 petefloat testain1 = testain->read_average();//cliSerial->printf_P(PSTR("Batery volts = %4.4f \n"),testain1);gcs_send_text_fmt(PSTR("\n Batery volts =…"

"I love your project.

I am working on a RC Viking ship with 300 kites for sails.  So I think anything is possible.

Here are my thoughts for your project:
1. Attach the hydrofoil to a kayak, so you have a place to sit down and enjoy the ride.  And…"