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AXE121

Problem with digital input with axe 121 in 28 pin project board

I have connected an AXE121 to the 28 pin project boarrd. The light on the AXE 121 work according to the line but in the digital input there is no input shown.Also the program with inputs doesnt work on the bot.What may be the problem?

Navigates around via ultrasound without falling using LED and LDR, Follows lines.
Using a
This is my first homemade robot. It is inspired on the Start Here Robot and Amanda LDR. Changes: Read more