RCX Not responding

[ian_b]

When trying to download the lejos firmware I am recieving an RCX not responding error.

I have tried multiple USB towers and multiple RCXs.

This is using Windows XP. I have tried using cygwin but recieve the noClassDeffinition error so will try to solve that and see if that works.

Any ideas would be great?

[stevendh]

First thing:

Check that you are in an area that doesn't receive much sunlight, sunlight can truly screw with IR.

Second:

The IR tower and RCX brick should be 3-6 inches apart.

Other things to check...

Is the brick running a program? (The firmware cannot download while a prog is running)

Is your RCXTTY environment variable set up correct for the type of communication you are using?

Hope this helps,

Steven