Raspberry Pi - DS18B20 Waterproof Digital Probe  

                                     Temperature Sensor       




VCC to  3.3V  P1 pin1,  Data to P1 pin7(GPIO4) , GND to P1 pin6(GND)

Data & VCC  have one 10K SMD Resister


This  DS18B20 1-WIRE Digital Thermometer with 9 to 12 bit programmable resolution.


  • Unique 1-Wire interface only requires ONE data pin for communication
  • Each device has a unique 64-bit serial number stored in an on-board ROM
  • Can be powered from the data line with a power supply range of 3.0V to 5.5V in Parasite mode
  • Measures temperatures from -55C to +125C
  • 0.5C accuracy from -10C to +85C
  • Thermometer resolution is user-selectable from 9 to 12 bits
  • Converts temperature to 12-bit digital word in 750ms (max)
  • The main chip is contained within a stainless steel tube measuring 6 x 50mm with a 1 meter long lead.


  Support our scratch driver software, can be easy use in scratch

   Scratch driver software


Command " TEMPB20"   to active 1-wire in pin7(GPIO4)


1.broadcast ""TEMPB20" 

2. after broadcast  in Sensing --> Slider ,

you will see the " Temp18B20"  in the list



 Demo Python program

Minimum Requirements a Raspberry Pi with Raspbian (wheezy) installed ,  

18b20-1.py   18b20.py     User Manual


Package Content

  1x Rs-Pi 18B20 1-Wire Temp Sensor with 1 Meter long lead

3x 20cm male to male cable  

1x manual 



Raspberry Pi




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