I don't see in the datasheet anything to mention correct operation at 3.3V. So I recommend you use 5V, 47k:150k divider or so (will scale your voltage reading by 0.761), with a ceramic capacitor (say, anywhere between10nF and 10uF) in parallel with the low-side resistor.
On Mon, Apr 7, 2014 at 10:18 AM, Marius Vosylius <[email protected]>wrote: > I'm using 3.3v pin. What resistor I need to use? > On 7 Apr 2014 18:08, "Ytai Ben-Tsvi" <[email protected]> wrote: > >> Read the beginning of this thread, I think most of the information is >> there. Don't forget to use a voltage divider in order to scale the voltage >> into the 0-3.3V range that the IOIO can handle. You can also put a >> capacitor in parallel to the low side resistor of that ladder to improve >> accuracy and overcome the high impedance problem. >> On Apr 7, 2014 9:48 AM, "Marius Vosylius" <[email protected]> >> wrote: >> >>> Sorry Ytai, I gave you wrong reading, its actually 0.50+ >>>> >>>> -- >>> You received this message because you are subscribed to the Google >>> Groups "ioio-users" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to [email protected]. >>> To post to this group, send email to [email protected]. >>> Visit this group at http://groups.google.com/group/ioio-users. >>> For more options, visit https://groups.google.com/d/optout. >>> >> -- >> You received this message because you are subscribed to a topic in the >> Google Groups "ioio-users" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/ioio-users/yEnGR1s-QT8/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> [email protected]. >> >> To post to this group, send email to [email protected]. >> Visit this group at http://groups.google.com/group/ioio-users. >> For more options, visit https://groups.google.com/d/optout. >> > -- > You received this message because you are subscribed to the Google Groups > "ioio-users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/ioio-users. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "ioio-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/ioio-users. For more options, visit https://groups.google.com/d/optout.
