I can't get the computer to talk to the lego robot
Is the lego robot on?
Try turning the lego robot on. If it will not turn on at all, try replacing the
batteries. If you do this, you will have to download the firmware to the robot
afterwards.
Is the robot facing the tower and closer than 15cm?
Make sure that the robot's receiver end is facing the transmitter.
When you start the transmission, can you see a small green light in the transmitter?
If not, check the transmitter's connection to the computer.
If that is intact, try replacing the transmitter's battery.