Arduino: 1.8.1 (Linux), Board: "Arduino/Genuino Uno" StandardFirmataPlus:1: error: 'roup' does not name a type roup/* ^ In file included from /opt/arduino/libraries/Servo/src/Servo.h:63:0, from /tmp/arduino_modified_sketch_150057/StandardFirmataPlus.ino:47: /opt/arduino/libraries/Servo/src/avr/ServoTimers.h:57:41: error: 'timer16_Sequence_t' does not name a type typedef enum { _timer1, _Nbr_16timers } timer16_Sequence_t; ^ In file included from /tmp/arduino_modified_sketch_150057/StandardFirmataPlus.ino:47:0: /opt/arduino/libraries/Servo/src/Servo.h:80:23: error: '_Nbr_16timers' was not declared in this scope #define MAX_SERVOS (_Nbr_16timers * SERVOS_PER_TIMER) ^ /tmp/arduino_modified_sketch_150057/StandardFirmataPlus.ino:111:14: note: in expansion of macro 'MAX_SERVOS' Servo servos[MAX_SERVOS]; ^ /opt/arduino/libraries/Servo/src/Servo.h:80:23: error: '_Nbr_16timers' was not declared in this scope #define MAX_SERVOS (_Nbr_16timers * SERVOS_PER_TIMER) ^ /tmp/arduino_modified_sketch_150057/StandardFirmataPlus.ino:113:21: note: in expansion of macro 'MAX_SERVOS' byte detachedServos[MAX_SERVOS]; ^ /tmp/arduino_modified_sketch_150057/StandardFirmataPlus.ino: In function 'void attachServo(byte, int, int)': /opt/arduino/libraries/Servo/src/Servo.h:80:23: error: '_Nbr_16timers' was not declared in this scope #define MAX_SERVOS (_Nbr_16timers * SERVOS_PER_TIMER) ^ /tmp/arduino_modified_sketch_150057/StandardFirmataPlus.ino:150:20: note: in expansion of macro 'MAX_SERVOS' if (servoCount < MAX_SERVOS) { ^ StandardFirmataPlus:153: error: 'detachedServos' was not declared in this scope servoPinMap[pin] = detachedServos[detachedServoCount - 1]; ^ StandardFirmataPlus:160: error: 'servos' was not declared in this scope servos[servoPinMap[pin]].attach(PIN_TO_DIGITAL(pin), minPulse, maxPulse); ^ StandardFirmataPlus:162: error: 'servos' was not declared in this scope servos[servoPinMap[pin]].attach(PIN_TO_DIGITAL(pin)); ^ /tmp/arduino_modified_sketch_150057/StandardFirmataPlus.ino: In function 'void detachServo(byte)': StandardFirmataPlus:171: error: 'servos' was not declared in this scope servos[servoPinMap[pin]].detach(); ^ StandardFirmataPlus:180: error: 'detachedServos' was not declared in this scope detachedServos[detachedServoCount - 1] = servoPinMap[pin]; ^ In file included from /tmp/arduino_modified_sketch_150057/StandardFirmataPlus.ino:47:0: /tmp/arduino_modified_sketch_150057/StandardFirmataPlus.ino: In function 'void setPinModeCallback(byte, int)': /opt/arduino/libraries/Servo/src/Servo.h:80:23: error: '_Nbr_16timers' was not declared in this scope #define MAX_SERVOS (_Nbr_16timers * SERVOS_PER_TIMER) ^ /tmp/arduino_modified_sketch_150057/StandardFirmataPlus.ino:299:28: note: in expansion of macro 'MAX_SERVOS' if (servoPinMap[pin] < MAX_SERVOS && servos[servoPinMap[pin]].attached()) { ^ StandardFirmataPlus:299: error: 'servos' was not declared in this scope if (servoPinMap[pin] < MAX_SERVOS && servos[servoPinMap[pin]].attached()) { ^ StandardFirmataPlus:364: error: 'servos' was not declared in this scope if (servoPinMap[pin] == 255 || !servos[servoPinMap[pin]].attached()) { ^ /tmp/arduino_modified_sketch_150057/StandardFirmataPlus.ino: In function 'void analogWriteCallback(byte, int)': StandardFirmataPlus:411: error: 'servos' was not declared in this scope servos[servoPinMap[pin]].write(value); ^ In file included from /tmp/arduino_modified_sketch_150057/StandardFirmataPlus.ino:47:0: /tmp/arduino_modified_sketch_150057/StandardFirmataPlus.ino: In function 'void sysexCallback(byte, byte, byte*)': /opt/arduino/libraries/Servo/src/Servo.h:80:23: error: '_Nbr_16timers' was not declared in this scope #define MAX_SERVOS (_Nbr_16timers * SERVOS_PER_TIMER) ^ /tmp/arduino_modified_sketch_150057/StandardFirmataPlus.ino:631:34: note: in expansion of macro 'MAX_SERVOS' if (servoPinMap[pin] < MAX_SERVOS && servos[servoPinMap[pin]].attached()) { ^ StandardFirmataPlus:631: error: 'servos' was not declared in this scope if (servoPinMap[pin] < MAX_SERVOS && servos[servoPinMap[pin]].attached()) { ^ exit status 1 'roup' does not name a type This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences.