KY-001 Temperature Sensor Module


Arduino Temperature Sensor Module Keyes KY-001, Allows ambient temperature measurement using digital serial bus. 


The KY-001 Temperature Sensor Module consists of a DS18B20 single-bus digital temperature sensor, a LED and a resistor. Compatible with popular electronics platforms like Arduino, Raspberry Pi and Esp8266.

Operating Voltage3.0V to 5.5V
Temperature Measurement Range-55°C to 125°C [-57°F to 257°F]
Measurement Accuracy Range±0.5°C
Dimensions18.5mm x 15mm [0.728in x 0.591in]

Connection Diagram

Connect the Power line (middle) and ground (-) to +5 and GND respectively. Connect signal (S) to pin 2 on the Arduino.

SPin 2
Arduino KY-001 connection diagramclick to enlarge

Example Code

The following Arduino sketch will use the OneWire library to serially communicate with KY-001 and it'll output the temperature read by the device. 

Links to the required libraries for the KY-001 Arduino example sketch can be found on the Downloads section below.

#include <OneWire.h>
#include <DallasTemperature.h>

// Data wire is plugged into pin 2 on the Arduino
#define ONE_WIRE_BUS 2

// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
OneWire oneWire(ONE_WIRE_BUS);
// Pass our oneWire reference to Dallas Temperature. 
DallasTemperature sensors(&oneWire);

void setup(void)
  // start serial port
  Serial.println("Dallas Temperature IC Control Library Demo");
  // Start up the library
  sensors.begin(); // IC Default 9 bit. If you have troubles consider upping it 12. Ups the delay giving the IC more time to process the temperature measurement

void loop(void)
  // call sensors.requestTemperatures() to issue a global temperature 
  // request to all devices on the bus
  Serial.print("Requesting temperatures...");
  sensors.requestTemperatures(); // Send the command to get temperatures

  Serial.print("Temperature for Device 1 is: ");
  Serial.print(sensors.getTempCByIndex(0)); // Why "byIndex"? You can have more than one IC on the same bus. 0 refers to the first IC on the wire
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