Has anyone experimented with the idea of using a TI-83 series graphing calculator as a portable console for an OpenWRT router?

There is a project for accessing the internet through TI calculators; I almost got it, but it requires a graylink (old serial ones). The requires a computer, though, and might not support SSH. If you have A LOT of time, are an oscilliscope, go ahead and try to build an IO-ethernet thing. That would be awesome.

poly-p man

I'm thinking of something like a serial or USB link cable wired to the router or even a custom cable wired to some GPIOs.

As I say, if you have A LOT of time, and an oscilliscope, anything's possible. There's nothing now, and I certainly wish there were. It sounds like a fun project.

poly-p man

I used an old Handspring visor and re-purposed one of the ethernet ports to a serial port. The Visor has 3.3v serial just like the router so no level converter circuit is neccessary.

Shrunken Head version
http://www.frontiernet.net/~beakmyn/Ope … Server.htm

PvTerm seems to work well but CSonline is another program once I figure out why the WRT isn't sending CRLF.

>As I say, if you have A LOT of time, and an oscilliscope, anything's possible. There's nothing now, and I certainly wish there were. It sounds like a fun project.
Well, it shouldn't take that much time. You need some experience with electronics and assembler programming, but a serial console for the TI-83 wouldn't be too hard. Personally, I don't see the point, but I'm sure someone would find it useful.

Regarding SSH (which someone seemed to suggest), you can forget it. The TI-83p has a Z80 - not exactly an encryption workhorse of a CPU.

Cheers,
David

I'm not thinking about making it use SSH. I just want it to connect to a serial console (RS232 or some other serial bus implemented with some GPIO pins). For my application, security is not much of a concern. It would be even neater if I could plug it in using a USB adapter (integrated into my calculator), although I'm not sure if the USB chipset can do that. (The one in the TI-83 series is pretty limited, but the one in the TI-84 and newer 89 series is much more flexible.)