Practical C++ programming tutorial for Bioloid robots

This entry is part 1 of 5 in the series Bioloid C++ tutorial

This is the main block of a simple Dynamixel example program using serial port.

Do you want to use the usb2dybnamixel? Changing it will be very easy. Here you can find several combinations of hardware, firmware and programming tools.

Here the Visual Studio C++ zipped project. And if you use this firmware you also can query sensor port values with this example:

#include "stdio.h"
#include "Dynamixel.h"
#include "SerialPort.h"

int _tmain(int argc, _TCHAR* argv[])
	int error=0;
	int idAX12=17;

	SerialPort serialPort;
	Dynamixel dynamixel;

	if (serialPort.connect(L"COM1")==0) {

		int pos=dynamixel.getPosition(&serialPort, idAX12);

		if (pos>248 && pos <1023)
			dynamixel.setPosition(&serialPort, idAX12, pos-100);
			printf ("nPosition <%i> under 248 or over 1023", pos);

	else {
		printf ("nCan't open serial port");

	return error;

Let’s start using the serial port:


  1. Simple C++ class example using serial port  and  Windows and Linux communications programming then
  2. Reading Dynamixel AX-12+ position, and finally
  3. Writing Dynamixel AX-12+ position.


  1. Linux example
  2. Pretty complete C++ example for Bioloid

If you want to learn C++ these wonderfuls links (found at JUCE) will help you:

Series NavigationReading Dynamixel AX-12+ position >>

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