30. Octopus Water-proof Temperature Sensor(EF04095)#

30.1. Introduction#

This sensor is a tempeterature detector used to test the liquid temperature based on 18b20.


30.3. Characteristics#

Standard 3-pin GVS ports is easy to plug. 3V working voltage can drive the micro:bit. Water-proof design makes it possible to use in the liquid.

30.4. Specification#

SKU:EF04095 Working Voltage:DC 3.0V Power Supply:3v-5v Connector Type:Analog Length of water-proof detector:1m Pins Definition:1-Signal 2-VCC 3-GND Response:Quick to response and high sensiivity Circuit:Simple drive circuit Stability:Stable and durable

30.5. Outlook and Dimensions#


30.6. Quick to Start#

Connection Diagram#

Connect to the P1 port of the extension board.


Add Package#

Click “Advanced” in MakeCode to check more choices.


Click “Extensions”, and search “https://github.com/elecfreaks/pxt-ds18b20” in the dialogue box to download the codebase of 18b20.

Programme as the Picture Shows#



Links: https://makecode.microbit.org/_1x1ERwiT1bui

You can also download it directly:


The current temperature value is showing on the micro:bit.

30.7. Relevant Cases#

30.8. Technique Files#