ATmega32\ problem with ADC output display to LCD

Development Boards MicroMod
1

I am designing a pitot tube for project. If you’re unaware, a pitot tube simply measures windspeed based on static pressure.

So, I have my pressure transducer connected to the ADC0 port on an ATmega32 chip. I can get the ADCH value and convert it to a string using itoa(…) and it displays fine to my LCD. However, when I try to use the ADCH output and multiply it against some constants (doubles already defined) then convert it to a string using dtostrf(…), it either displays 00’s, or a bunch of gibberish.

I guess my question is this:

if I wanted to use the ADCH output and multiply it by 1.1 and display that value on the LCD, what the hell do I need to do? I know exactly how to display a string to my LCD, so it has to be an intermediate step that is causing me problems. Any ideas AVR gurus?

2

http://arduino.cc/en/Reference/Float

3

Hello ,Thanks for asking !

instead of dtostrf ,use itoa function that might solve your problem I have made a nice tutorial for you ! to display ADC number to LCD . with Atmega-32/16 please check this URL.thank you https://www.electronify.org/avr-projects/thermometer :roll: