On our design project, we opted to use a PIC16F84A https://ww1.microchip.com/downloads/en/devicedoc/35007b.pdf and a temperature sensor namely LM35. I looked the net for codes and the most I could find were PIC16F877A and the codes always convert analog to digital and have some sort of ADC function. PIC16F877A http://ww1.microchip.com/downloads/en/DeviceDoc/39582C.pdf also has AN0, AN1 pins which are ADC converters needed for the code while PIC16F84A doesnt have any pins like that. I dont know if I should continue working with F84A since we need a certain value for the temp sensor before it activates an input or if it can be fixed with an ADC IC. And from what I noticed from other tests using a sound sensor that it only returns either a zero or a one despite adjusting the values on the if statements.

Should I just switch the PIC to a newer version or can this be adjusted using an ADC IC namely a TLC549?

 

You could use a One Wire sensor, or even a number of them.
https://cdn.sparkfun.com/datasheets/Sensors/Temp/DS18B20.pdf
No ADC required.

 

You could use a One Wire sensor, or even a number of them.
https://cdn.sparkfun.com/datasheets/Sensors/Temp/DS18B20.pdf
No ADC required.

We ended up using 16f877a though, but thanks for the suggestion.

 

I'm a bit late to the thread, but the pic16f819 was a drop in replacement I used it quite a bit....