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counting box

ultrafire3

Sep 27, 2013
19
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Sep 27, 2013
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19
hey guys,

I need help building box with an LCD screen that has two buttons-one that counts up- and another-one that counts down- and a dial that adjusts how many integers(1-10) the screen counts. (0-9999) how can I make such a beast!? halp! :confused:
 

BobK

Jan 5, 2010
7,682
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Jan 5, 2010
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7,682
What experience do you have?

This is not a beginner project.

Bob
 

ultrafire3

Sep 27, 2013
19
Joined
Sep 27, 2013
Messages
19
I know arduino and pic, but i prefer picaxe. Wich microcontroller should I use, and how?
 

BobK

Jan 5, 2010
7,682
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Jan 5, 2010
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7,682
The one you are most comforatble with. Any uController with the needed number of inputs and outputs will do it.

I would use a rotary encoder for the "dial up the count" feature, becuase a pot would be too difficult to control accurately from 0-9999.

So you need two pushbuttons and a rotary encoder as inputs and (that makes 4 since a rotary encoder acts like 2 switches) for the LCD screen you need 3 control lines and 4 or 8 data lines.

So, minimally, you need 4 inputs and 7 outputs. This could be done with one of the 18-pin or 20-pin PICs with a few spare pins.


Bob
 
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