Ain3 has a maximum input voltage of 1.8v the lm35 is being powered from a +5v supply your going to need to do something a bit different with the output of the LM35 so you dont damage the adc input.
On 1/19/2018 6:17 AM, Mateus Lucas wrote: > Oh, sorry. I have sent the wrong image. > Thanks for your attention. > > > > 2018-01-19 9:49 GMT-03:00 evilwulfie <evilwul...@gmail.com > <mailto:evilwul...@gmail.com>>: > > Would love to try to help but even when i saved your schematic > picture and enlarged it > i was unable to make out anything in it. > > On 1/18/2018 8:34 PM, mateuslucas.l7...@gmail.com > <mailto:mateuslucas.l7...@gmail.com> wrote: >> >> >> >> I'm using two analog inputs, the first with a LDR and a resistor >> of 10k Ohm, connected at P9_39 (AIN0), and the second connected >> at P9_38 (AIN3). >> When the lights are down, the measure of LM35 works very well, >> with a low distorction, +/- 0.2 ºC. >> But when the lights are on, the measure of LM35 starts to float, >> about +/- 1 ºC. >> I have tried to put a 4.7nF between GNDA_ADC and AIN3, but the >> distorction continues. >> >> I asking for help to diminish this distorction when the lights >> are on. >> >> -- >> For more options, visit http://beagleboard.org/discuss >> --- >> You received this message because you are subscribed to the >> Google Groups "BeagleBoard" group. >> To unsubscribe from this group and stop receiving emails from it, >> send an email to beagleboard+unsubscr...@googlegroups.com >> <mailto:beagleboard+unsubscr...@googlegroups.com>. >> To view this discussion on the web visit >> >> https://groups.google.com/d/msgid/beagleboard/d5353977-2025-4aa3-b6a0-361742ae9c96%40googlegroups.com >> >> <https://groups.google.com/d/msgid/beagleboard/d5353977-2025-4aa3-b6a0-361742ae9c96%40googlegroups.com?utm_medium=email&utm_source=footer>. >> For more options, visit https://groups.google.com/d/optout >> <https://groups.google.com/d/optout>. > > > > > -- > Mateus Lucas de Campos e Silva > Técnico em Eletrônica pelo IFPB - Campus João Pessoa > Bacharelando em Engenharia Elétrica pelo IFPB > Celular: (83) 988335074 -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/da7477ba-2546-009c-65f1-d799a088cec1%40gmail.com. For more options, visit https://groups.google.com/d/optout.
