I am currently using ITDB02 2.8 Touch Screen shield (http://imall.iteadstudio.com/im120417020.html
) with Arduino UNO Board. The issue is that the shield uses all the Arduino UNO pins as in the link shown. I want to connect / communicate with a KeyPad and RFID - I am not sure how I can do that - is there any possibility?
The USB port is used to power on / dump hex code in Arduino UNO board - can we communicate via this USB port when connected to a AVR controller USB2SERIAL - a USB connector connected to AVR controller via USB 2 Serial wire?