What type is DS18B20?
DS18B20 is 1-Wire digital temperature sensor from Maxim IC. Reports degrees in Celsius with 9 to 12-bit precision, from -55 to 125 (+/-0.5). Each sensor has a unique 64-Bit Serial number etched into it – allows for a huge number of sensors to be used on one data bus.
What is the operating voltage of a DS18B20 Temperature sensor?
Here’s a summary of the most relevant specs of the DS18B20 temperature sensor: Communicates over one-wire bus communication. Power supply range: 3.0V to 5.5V. Operating temperature range: -55ºC to +125ºC.
What is the output of DS18B20?
The resolution of the DS18B20 is configurable (9, 10, 11, or 12 bits), with 12-bit readings the factory default state. This equates to a temperature resolution of 0.5°C, 0.25°C, 0.125°C, or 0.0625°C.
How does the DS18B20 work?
The DS18B20 is one type of temperature sensor and it supplies 9-bit to 12-bit readings of temperature. These values show the temperature of a particular device. The communication of this sensor can be done through a one-wire bus protocol which uses one data line to communicate with an inner microprocessor.
Where can I find the DS18B20 datasheet?
Also the DS18B20 datasheet can be found at the bottom of the page The DS18B20 is a 1-wire programmable Temperature sensor from maxim integrated. It is widely used to measure temperature in hard environments like in chemical solutions, mines or soil etc.
How to connect DS18B20 to Arduino pin 2?
If you are using the waterproof version of the DS18B20, connect Red stripe to 5V, Black connects to ground and Yellow Stripe is data that goes to digital pin 2 on arduino. You still need to connect a 4.7K pullup resistor from data to 5V.
What does th and TL do on the DS18B20?
The temperature alarm triggers TH and TL consist of 1 byte EEPROM each. If the alarm search command is not applied to the DS18B20, these registers may be used as a general purpose user memory. The scratchpad also contains a configuration byte to set the desired resolution of the temperature to digital conversion.
Is the DS18B20 communication using 1 wire port?
The DS18B20 communication is using 1 wire port. With the 1wire port the memory and control functions will not be available before the ROM function protocol has been established. The master must first provide on of five ROM function command. 1. READ ROM 2. MATCH ROOM 3. SEARCH ROM