SparkFun Forums 

Where electronics enthusiasts find answers.

Search found 3 matches

 Go to advanced search

Re: Stand alone arduino help

 by pwillard ¦  Sat Apr 28, 2012 8:29 am ¦  Forum: Arduino ¦  Topic: Stand alone arduino help ¦  Replies: 8 ¦  Views: 1348

A few possibilities come to mind. 1) you need to change the board defined in the IDE (Yeah I know, obvious right?) 2) your part actually doesn't have a bootloader on it. (sounds impossible, but hey we're only humans, mistakes happen) 3) Check your pins... one might have "folded under" when being ins...

Re: Is there any resistance with analog-in for Arduino OSEP

 by pwillard ¦  Sat Apr 28, 2012 8:23 am ¦  Forum: Arduino ¦  Topic: Is there any resistance with analog-in for Arduino OSEP FIO? ¦  Replies: 6 ¦  Views: 857

There there is an impedance recommendation for analog inputs. Your selected resistor values cause the impedance to be is very high and therefore the current to be quite low... on the order of about 4uA. This is not really very close to what ATMEL recommends. FROM ATMEL DATASHEET The ADC is optimized...

 by pwillard ¦  Fri Jun 05, 2009 11:33 am ¦  Forum: Code ¦  Topic: Arduino + rotary encoder ¦  Replies: 8 ¦  Views: 40219

You probably need to de-bounce your rotary encoder switches.

http://www.ganssle.com/debouncing.pdf