21. DS18B20

The DS18B20 is a popular digital temperature sensor widely used in various applications due to its accuracy, simplicity, and ease of integration.

Features of DS18B20:

• Accuracy: ±0.5°C accuracy from -10°C to +85°C.
• Temperature Range: -55°C to +125°C.
• Resolution: Programmable from 9 to 12 bits (default is 12 bits, providing 0.0625°C resolution).
• Interface: Communicates using the 1-Wire protocol, requiring only one data line (plus ground and optional power) for communication.
• Power Modes: Can operate in parasitic power mode (two wires) or normal mode (three wires).
• Multiple Devices: Each sensor has a unique 64-bit ROM code, allowing multiple DS18B20s to be connected on the same data line.

Connections:
Pins:

• VDD: Power supply (3.0V to 5.5V).
• GND: Ground.
• DQ: Data line, connected to a microcontroller I/O pin with a pull-up resistor (typically 4.7kΩ).

Libraries

• OneWire
• DallasTemperature

	Breadboard
	Arduino nano
	DS18B20
	Stitchable Plug Pin Naald Pitch Header Socket
	Breadboard Jumpers
	Pull-up resistor 4.7kΩ

Monitor output