How to make an analog Thermometer with Arduino a DS18B20 and an analog Voltmeter

Technoblogy - Two-Digit Thermometer

Axotron

How Does a Sound Sensor Work and how to Interface it with Arduino?

Guide for LM35, LM335 and LM34 Temperature Sensors with Arduino

Temperature Sensor - #21 by pylon - Sensors - Arduino Forum

Technoblogy - Two-Digit Thermometer

DS18B20 Temperature Sensor Module For Arduino - Robotools

Arduino DS18B20 Water Temperature Monitor

Analogue parallel port

Eva Electronics Co., Arduino Kuwait