salva g wrote:
> ok, but can you have a look to this,
>
>
http://www.serasidis.gr/circuits/lcd_keys/lcd_keys.htm
>
> do you think it could be impplemented in the TS7800?
> i think that if we go line by line put them low-to-high and then, read
> the switches pressed(of 4), next line and so on...and very very fast!,
> we could have it or (probably) am i wrong?
That is exactly what I described right down to 10k series resistors to
current limit in the case of a short between columns. As I said in my
last message with some careful diode placement you could get away from
the multiple column problem but that's honestly not something I'm
prepared to describe on a mailing list when it's out on the Internet to
be found :)
--
Jason Stahls
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