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Schematic for a Ti-83 Calc PC Link

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Nostrafus

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Anyone got one, can be USB, Serial, or Parallel, I got free ones for all of them, all the ones I found online were made by people who don't know how to make schematics. Very poor quality.
 

MrMikey83

New Member
I've decided to build the circuit in the first link...schematic http://home.wanadoo.nl/ti83world/images/cable/bp_print.gif

My Question: Radio Shack only had a 5.1V Zener Diode. WOuld it be possible to swap out the 4.7V Zener the schematic calls for and use the 5.1V instead? I wouldn't think less than half a volt would make much difference, but thought I should ask first.

~Mike
 

MrMikey83

New Member
Anyone??
Would that extra .4 Volts be too much for the calculator? I started everything last night and all I need is this answer and i will have it done.
Thanks,
~Mike
 

Nostrafus

New Member
Shouldn't be a problem, I think there might actually be a way to drop the .4 volts, perhaps try using a slightly smaller power supply on your calc, like 4 AA lith ions (the 1.2v kind so instead of having 6v, you'll have 4.8v) that way, when you get the extra voltage going to it, it shouldn't hurt it.
 

MrMikey83

New Member
OK, I wired it and fit it to a case, should work, just need to grab the right size cable at RS before work.
I'll post again if it works.
~Mike
 

Noggin

Member
I remember making a cable for my calc about 2 years ago. The ******* wouldn't work until I lopped the lines down to about 4 inches long.
 
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