Temperature Sensor - Waterproof (DS18B20)

The Waterproof Temperature Sensor (DS18B20) from Sparkfun is a high-precision digital temperature probe designed for use in damp or wet environments. This device utilizes a 1-Wire interface, requiring only one wire (plus ground) to connect to a central microprocessor. It provides 9 to 12-bit (configurable) temperature readings, ensuring accurate and reliable data.

The sensor operates on an input voltage of 3.0-5.5V and is capable of measuring temperatures ranging from -55°C to +125°C. It guarantees an accuracy of ±0.5°C in the range of -10°C to +85°C. The probe itself is compact, with a diameter of 7mm and a length of approximately 26mm. The overall length, including the wire, is approximately 1.83 meters.

Using the Waterproof Temperature Sensor (DS18B20), you can develop a wide range of applications. For instance, it can be used in weather stations for accurate temperature readings regardless of precipitation. It's also ideal for hydroponic systems where constant monitoring of water temperature is crucial for plant health. Furthermore, it can be used in aquariums to ensure optimal conditions for aquatic life.

The unique properties of this sensor make it a valuable tool in any project requiring precise temperature measurements in potentially wet conditions. Its waterproof feature ensures durability and consistent performance, even in challenging environments. Also, its 1-Wire interface simplifies the wiring process, making it a convenient choice for both hobbyists and professionals.

Sparkfun provides a datasheet for the DS18B20, which includes all the technical details you need to incorporate the sensor into your project. They also offer simple sketch code and an mbed example to help you get started. Please note that the pinout for this sensor is RED=Vcc, BLACK=GND, WHITE=SIG.