Arduino Uno programming

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I am new to Arduino and have done only a little coding. The code I am looking for is to do the following:
I have one push button as input, five led's as outputs.
The first press should power led1, the second press should shut off led1 and power led2, the third press should shut off led2 and power led3, and so on.
Thanks for your guidance . It looks simple but it is beyond my current capability!

Posted 25-Nov-12 13:24pm

Gapak

Updated 9-Nov-20 3:04am

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DaveAuld · Answer 1 · 2012-11-25T22:38:00

Why don't you look at my Arduino examples on this site (scroll down to hardware programming);
http://www.codeproject.com/script/Articles/MemberArticles.aspx?amid=557325[^]

and also have a look at some of the Arduino examples on my website;
http://www.dave-auld.net/index.php?option=com_content&view=category&id=53:arduino-input-output-basics&Itemid=107&layout=default[^]

There should be enough info in amongst those various articles (particularly the ones on my website) to get you going. :)

noiseland · Answer 2 · 2020-11-09T03:05:00

What you are trying to do represents a textbook application of a finite state machine (FSM). Read a bit about this concept, maybe on this site or on wikipedia.
The state of your application will be the number of button presses. Remember that buttons will likely bounce, i.e. pressing it once may cause multiple presses to be detected by your program.
From the current number of button presses, you will have to determine the LED to power on, while powering all others off. This is done by calculating the remainder of the number of button presses when divided by the number of LEDs.

There is an important caveat with arduino programming: Think carefully, whether your code should go into the setup() or the loop() function. It may be desirable to leave loop() empty and put everything into setup(); this may give you better control over the way you like to write your code.

Arduino Uno programming

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