29. Octopus Water-proof Temperature Sensor

29.1. Introduction

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

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29.2. 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.

29.3. 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

29.4. Outlook and Dimensions

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

29.5. Quick to Start

Connection Diagram

  • Connect to the P1 port of the extension board.

../../_images/04095_21.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:

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Results

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

29.6. Relevant Cases

29.7. Technique Files