I'm thinking of constructing something for many car. I want to replace a sensor with a different type. So I need to translate the new type sensor output to meet the original sensor signal. I already have the comparison table. 8bit will be enough, but 10 bit is always better.
I need to convert a 0-5v analog signal to meet a other 0-5 v value. So I need to adc, lookup the correspondence value in a table and output true DAC. It needs to be realtime, but I think a a average of double sample will be more accurate..
I have done a bit programming a avr more than 10 years ago, and lost my programming ability by doing lots of other things that remotely looks like code so I need to learn again
Crossroads: I don't know yet which DAC to use, the one u suggested is good enough looking at the datasheet. In the past I used the PWM with a RC to go back to analog. but I don't know if this is good enough. With 10 bit DAC I have a resolution of 0,0012v. With a 8 bit PWM I got theoretically 0,019v resolution. I think this should be enough for my application, but I don't know if this gonna be the end result with the RC.
Thank you, Robin. I will choos a uC suited for automotive for the final result.