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Full Version: [WP-34s] IR conversion of 20b
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Is there a reason from an electronics expert's point of view that installing a crystal and an IR diode would not work on a 20b the same way as on a 30b?

No, it works exactly the same way. I have done just that. The only reason against the 20b is the poor keyboard compared to the 30b.

Thanks, I will eventually try it - for the better looks of the 20b! ;-)

If the looks are what you are after, you should probably transplant a 30b keyboard into the 20b :)