Go USB

Hello Friends,

RS232 was a soft option for serial communication with the PC until the dawn of new laptops with no serial ports. Of course, we are aware of USB to serial converters. I feel they are not very reliable. They are still used to support those legacy projects. But when it comes to new designs; I say we better move on to USB.

Have a feeling that USB programming is hard? I too had the same feeling until I came across the VUSB project. If you are already aware of this one, then you may skip this thread. VUSB is a magic that transforms ordinary AVRs (ATTINY2313, ATMEGA8, etc) into a USB plug and play device. You need no additional hardware apart from a few zenner diodes and resistors. You can download and use the VUSB libraries for free!

Check this link: http://www.obdev.at/products/vusb/index.html

Now for the PC side programming, there is another project: libusb. A windows port of libusb is available at: http://libusb-win32.sourceforge.net.

Now I am back building PC powered projects. My first USB project: an RGB LED that can be controlled via PC. The PC application displays a color chooser window. The LED is set to the chosen color. It is built around ATTINY2313. I am attaching a few images and also a video. Please check them out.

Video:

So, what are you waiting for? Go USB...!

Sandeep Sasi
([email protected])

Hi Sandeep,

Very impressive this one..

should i add this to download section?

ultimate buddy... i would like to try code for it... i can write the code for avr.. but didn understood how u interfaced it with the paint(color selection )...

its not paint. its a custom designed software what sends color code to AVR via serial.

As Ajay said it is not paint.

Instead it is a simple java application. The color chooser you see
is the JColorChooser class of javax.swing package. The application interacts with
the WinUSB driver via JNI (Java Native Interfacing).

Anyway, thanks buddy. I almost forgot. I promised that I shall upload the code nearly six
months ago.

Hi Sandeep,

welcome back again!

Well atleast you remind that you promised. many have forgot

Keep in touch!

Nice A+++