Using the TTL port

[dez250]

im guessing by ttl port you mean a computers parallel port and if thts truely what you mean then here http://computer.howstuffworks.com/parallel-port.htm

Hope that helps

[Tristan Lall]

I think he's talking about the TTL serial port on the EDU-RC. It should be functionally identical to a regular serial port, except with much lower voltage levels required for signalling.

[Max Lobovsky]

Originally Posted by Tristan Lall

I think he's talking about the TTL serial port on the EDU-RC. It should be functionally identical to a regular serial port, except with much lower voltage levels required for signalling.

Yes, I'm talking the FIRST-sepcific ttl port. Also, as I understand it, both the RC and the Robovation have a ttl serial port.

[AlbertW]

He's talking about the TTL (Transistor-Transistor Logic) port on the 2004 Robot Controller.

The TTL port is a direct link to the User Processor in the RC and is basically a non-level-shifted version of the program port (which is RS232). Both of them can be used (with or without level-shifting) to communicate with other serial devices like CMUcams, computers, other RCs, and so forth.

In short, it's another serial port. How do you use it in the progrmaming? Don't ask me.

Oh, and the pinout (as copied from the Innovation FIRST RC reference guide) is

From left to right, +5v, TX (transmit), RX (recieve), B (ground)