ThermoDuino is a mini Arduino compatible board that consists of LM35 temperature sensor, ATMEGA328 chip, and 0.96″ OLED display. The board has been designed to measure temperature. We have used the LM35 SO8 SMD sensor which is connected to A0 analog pin of the chip, and the OLED display is connected to A4 and A5 pin of MCU. LM35 senses the temperature and the microcontroller displays the temperature value on the OLED display. CN2 connector helps to program the microcontroller using Arduino IDE and boot-loader burning. This low profile and small board can fit in a very small case. Example code will help you to display the temperature in Centigrade and Fahrenheit. It is an open-source Arduino compatible hardware and it is easy to create your own code using Arduino IDE.
ThermoDuino – OLED Display Thermometer and Tiny Arduino Board – [Link]