I believe if we come into contact with this amazing Arduino then the DS18B20 digital thermometerChips are generally not stranger to it, right! It enables you to keep abreast of the ambient temperature around you, more importantly, as If you have an idea you can also customize own use Arduino DIY a thermometer, put in your bedroom or in the car, Well, let's work together to uncover the mystery DS18B20, and then you You can use it to make the Kinds of
electronic products that match your personality.

2. Products
As in the past the temperature sensor output is analog, we need to add additional A/D And D/A chip into Line conversion, then for Arduino resources are not abundant external interface is a big challenge at the same time Utilization is not high, then we The new DS18B20 Temperature Sensor Module for a good solution to this Issues unique bus line And economic characteristics,fully applicable Arduino platform that allows users to easily set up pass Sensor networks.

3. Technical parameters
1>. the module uses a single-bus digital temperature sensor DS18B20, the external power supply voltage Range is 3.0 V to 5.5 V, No standby power. Measurement temperature range of -55? to +125?, Fahrenheit equivalent 67°F to 257°F, -10? to +85?. range accuracy of ±0.5°F;.
2>. the temperature sensor is a programmable resolution of 9 to 12 temperature conversion to 12-bit digital format With a maximum of 750 milliseconds formula User definable nonvolatile temperature alarm settings.
3>. each DS18B20 contains a unique serial number, can be with a plurality ds18b20s Exists in a bus. Temperature sensor can be placed at different places in the detected temperature.

4. Notes
1>. because the ordinary transistor DS18B20 and looks similar, we'll be sure to note when using Be careful not to regard it as a generalPass transistor used to avoid damage;
2>. in order to prevent damage to the DS18B20 and makes it does not work, we should ensure that the powerLine and ground not reversed.
3>. the relevant technical data on the bus did not mention a single number that can be linked to how much DS18B20, But in practical applications are not as many, and we should pay attention to.
4>. there is a connection DS18B20 bus length limitations that should be taken in the long-distance communication Consider bus distributed capacitance and resistance Impact resistant.
5>. instructions for use Identify DS18B20 Temperature Sensor Module power lines, ground, and data Lines, power lines, ground points connected to the Arduino test board +5V, GND port number Data bus connected to the digital port.