Which voltage reference are you using? I used ATmega16 and had a similar problem because it was set to use internal 2.56V voltage reference. Regards, Jose --- Leon Heller <leon.heller@dsl.pipex.com> escribió: > > ----- Original Message ----- > From: Nailson Roveta > To: AVR-Chat@yahoogroups.com > Sent: Thursday, January 06, 2005 1:53 PM > Subject: [AVR-Chat] ADC in AVR > > > > Dear, > > I need to use a sensor of temperature in the avr so > that he makes a > decision in agreement with the value (using the > entrance A/D). Use > BASCOM, does anybody have some circuit (clue) with > that resource? I > am using an attiny15. In the moment use an AT90S4433 > connected to a > PC to accompany the value read in the door ADC, I > placed a variable > source 0-5V in one of the channels ADC, even so, I > am not obtaining > success. when passing the 2,5V all the channels they > start to have a > value of 1023. Excuse for English. thank you. > > > I've just been experimenting with the ADC in the > Mega8535, which has a 2.56 > V reference. The '4433 is probably similar, so you > will need to attenuate > your input if you want to measure up to 5V. > > Leon > > > > -- > No virus found in this outgoing message. > Checked by AVG Anti-Virus. > Version: 7.0.300 / Virus Database: 265.6.8 - Release > Date: 03/01/2005 > > > > > Yahoo! Groups Links > > > AVR-Chat-unsubscribe@yahoogroups.com > > > > > > ___________________________________________________________ 250MB gratis, Antivirus y Antispam Correo Yahoo!, el mejor correo web del mundo http://correo.yahoo.com.ar
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Re: [AVR-Chat] ADC in AVR
2005-01-06 by Jose Fuentes
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