Measuring temperature with sensors and Arduino, a very simple project made and posted by DIYTechStudio
on Instructables. In that post he will show us how to make a Temperature Meter using Bar Graph and Atmega328p. The post will include all the details like circuit diagram, PCB fabrication , Coding, Assembly and Testing. He also included a video containing all the details inc ase you want to watch that. The aprt lsit is quite short for this project. Of course we need taht PCB he made, or just place the components on a drilled PCB for prototypes. But with his PCB this will look a lot better. He sues the ATmega 328 microcontroller, which is the one used by the Arduino UNO. To show the temperature level, he will use a bar graph with LEDs.