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.

../../_images/04095_0.jpg

30.2. 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.

30.3. 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

30.4. Outlook and Dimensions#

../../_images/04095_1.jpg

30.5. Quick to Start#

Connection Diagram#

  • Connect to the P1 port of the extension board.

../../_images/04095_2.png

Add Package#

Click “Advanced” in MakeCode to check more choices.

../../_images/smtcNoB2.png

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#

../../_images/04095_3.png

Reference#

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

You can also download it directly:

Results#

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

30.6. Relevant Cases#

30.7. Technique Files#