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How can i make an up/down counter with arduino? Answered

I would like some help making a 2 digit up/down counter with arduino that resets to a preset-able number and how to connect it to a 2 digit 7-segment display, all responses are appreciated.

Tags:arduino

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fargasch

7 years ago

Also, if you are still unsure after checking the resources below take a look at the posts tagged 7-segment display on my blog. There are two simple projects (spread out into 7 or 8 posts), one using a 1-digit display, and one using a 2-digit display. It only counts up, but I share the source code which can be easily modified (as described in the answer below) to decrement the counter as well. Good luck!

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frollard

7 years ago

www.arduino.cc

look at learning, 'reference' and 'playground' sections of the site - they discuss how to interface with hardware (buttons, leds, displays, etc) , basic to advanced programming, and an entire help community on the forums.

As for the program it would basically look like:

setup(
initial value = whatever;
incrementpin = whatever;
decrementpin = whatever;
resetbuttonpin = whatever;
ledpins = blablabla;
)

Loop
output the number to the 7 segment displays
check for a button
if a button, increment/decrement the number
if resetbutton, set counter to intial value;
loop