Tom, You make my gloomy and snowy weekend a lot better! I checked the /SHDN pin and it was held low... The datasheet stated that it was always pulled high by VDD (See picture below), that is why I didn't question the integrity of the pin. I check the resistor R21 that was connected to the pin and the side it is connected to VDD has 5V while the side it is connected to /SHDN is 0V. What would be the cause of this? Since it is still working with the GUI program... Thanks, Alex
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