I trying to use a Ultrasonic Module HC-SR04 on my Udoo board. I have tried use Newping 1.5 and 1.6 version but non of them works. https://code.google.com/p/arduino-new-ping/ Any one got HC-SR04 to work whit Udoo? I get this error: /home/ubuntu/Arduino/libraries/NewPing/NewPing.cpp: In constructor 'NewPing::NewPing(uint8_t, uint8_t, unsigned int)': /home/ubuntu/Arduino/libraries/NewPing/NewPing.cpp:21:17: error: cannot convert 'RwReg* {aka volatile long unsigned int*}' to 'volatile uint8_t* {aka volatile unsigned char*}' in assignment _triggerOutput = portOutputRegister(digitalPinToPort(trigger_pin)); // Get the output port register for the trigger pin. ^ /home/ubuntu/Arduino/libraries/NewPing/NewPing.cpp:22:13: error: cannot convert 'RoReg* {aka volatile long unsigned int*}' to 'volatile uint8_t* {aka volatile unsigned char*}' in assignment _echoInput = portInputRegister(digitalPinToPort(echo_pin)); // Get the input port register for the echo pin. ^ /home/ubuntu/Arduino/libraries/NewPing/NewPing.cpp:24:75: error: 'portModeRegister' was not declared in this scope _triggerMode = (uint8_t *) portModeRegister(digitalPinToPort(trigger_pin)); // Get the port mode register for the trigger pin. ^ Error compiling.