i am also having the same problem. i am reading 2 adc value from my atmega32 and send them serially via ftdi chip to GUI in vb. On the GUI im receiving the exact values since i have also an lcd displaying the values. The problem im having is receiving values on the atmega from the GUI, im getting garbage data instead of values and im failing to come up with the function to convert into actual integer values. Your help wil be appreciated