/products/raspberry-pi/b/blog/posts/learning-about-i2c-with-the-adafruit-pi-cobbler-and-8x8-led-matrixOne of the most accessible projects you can try with your Raspberry Pi is to learn about the communications features of the expansion header. The Raspberry Pi has 26 pins which carry signals ranging from GPIO (which can be configured in s...en-USTelligent Community 12