Hi all! I'm just getting started with Mindstorms and RobotC, and I'm particularly interested in the ColorSensor. I can get it to work fine when I run e.g. View -> Color Detector (on the NXT display), or when I use the visual Mindstorms bricks editor. However, I want to use RobotC, but trying different samples I cannot seem to receive data (neither is the light of the sensor turned on when running them, if that matters). For instance, running the sample listed at the top of viewtopic.php?f=19&t=2526 will show, on the display, the string "???", even though I'm holding the sensor (port 3) over green.

Some background: I'm using Mindstorms Next 2.0. In the RobotC IDE, I did the suggested Firmware update; the About dialog now reads RobotC3.04 (F/W 9.04). I'm on Windows 7.

Thanks for any help!!

You said you have it in Port 3, but the program is configured for port 1. Try plugging it in to port 1, or changing the port in the program to which ever you've plugged it in to.

Thanks so much, that solved it (so that's what the S1 meant )! (I had it plugged into port 3 because the Mindstorms manual said that was the default, but now I know this can be easily redefined.)

You're welcome. Glad to help.