Author Topic: Build a 2.5mm - 2.5mm cable?  (Read 4169 times)

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Offline wchill

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Build a 2.5mm - 2.5mm cable?
« on: April 01, 2010, 06:07:02 am »
I could use one of these for selling sending programs to poor folks with only 83s.
I have the connectors, I have the wire, I put it together, and... IT FAILS.
Anyone wanna shed some light on the situation?
By the way the connectors are connected directly to each other like so:

Offline lachprog

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Re: Build a 2.5mm - 2.5mm cable?
« Reply #1 on: April 02, 2010, 05:58:03 pm »

I am not sure how the link port on the Ti-83 is physically implemented, but:
It might be that you need a crossover cable to get the communication working.
That is if the link port is using a RX/TX scheme, like RS232 (That means that the two calcs sends their data on separate wires).

That means that you might need to swap two of the connections. One of the connections is ground, this must be left as it is.
I'll see if i can find more specific information for you later today.