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Rank beginner question

Started by "Reg...@yahoo.com [msp430]" July 11, 2014
Do you NEED 12 keys? Suppose you stay in the 0001ms-9999ms range, then you could have 2 spin-buttons (UP/DOWN) for each digit, for a total of 8 time-setting buttons. Add one for START and you have a 3x3 matrix.

Beginning Microcontrollers with the MSP430

On Sat, Jul 12, 2014 at 6:11 AM, f...@yahoo.com [msp430] <
m...> wrote:

> Do you NEED 12 keys? Suppose you stay in the 0001ms-9999ms range, then
you could have 2 spin-buttons (UP/DOWN) for each digit, for a total of 8
time-setting buttons. Add one for START and you have a 3x3 matrix.

You could probably keep it even simpler still with a single pot on an A-D
channel.

-p.

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