Does anyone know how to produce sound on a VEX/Cortex system. I have found some examples, but they didn't work for me. Do you just plug a speaker into motor port 1? I can't find the directory where the.wav files are stored. Any ideas?

Thanks

Yes, you would need to plug a speaker into motor port 1.
EDIT: Sorry, I didn't read the cortex part. Even though it was part of the title.

Motor Port 1 is used on the VEX PIC, but the Cortex actually has a dedicated "SP" port at the end of the Digital bank.

VEX is releasing their own speaker relatively soon, but you can hook up a piezoelectric speaker to make use of the functionality.

Thanks for telling me about the speaker output port. Where are the sound files stored? How can I add my own sound files? Where do you find information on this stuff? I have been searching with no luck. Thanks again.

We'll be releasing documentation when VEX releases their official speaker. Currently there is no directory of sound files.

In ROBOTC, if you switch your Window > Menu Level to "Expert" you'll see a Sound category with the possible commands. The "PlaySound()" command allows you to play sounds predefined in the Cortex firmware - "soundBeepBeep, soundBlip, soundDownwardTones, soundException, soundFastUpwardTones, soundLowBuzz, soundLowBuzzShort, soundShortBlip, soundUpwardTones" are their names. The "PlayTone()" command allows you to specify a frequency and duration to play.

Can you tell me what pins to use for a simple two wire speaker?

Thanks, Bill

I haven't tried any 2-wire speakers to know how well/if they'd work. Here's a link to the Cortex schematic that would let you use the appropriate ports, though: http://www.education.rec.ri.cmu.edu/pro ... ematic.pdf