I got the source code for micro controller from tutorial. Could you provide me example code from PC side to be able to communicate with controller. If possible on C and which can work on Mac. Thank you

Hi bhovik,

Reading from the serial port can get tricky on different operating systems, but it should not be too difficult on a Mac depending on which operating system you use. I'm not very familiar with OSX development environments, but in Python you can get serial communications to work fairly easily. Get Python installed, as well as PySerial, and PyGame and you should be able to look at the Weigh Scale project for an example.

Humberto

I have tried it. I can read from USB, but I have problem writing to USB. I have tried starting from simple "echo" to your python program for car motion.