16. Octopus Rain/Steam Sensor

16.1. Introduction

This is a Rain/steam sensor from ElecFreaks, the output voltage will increase when the humidity of the sensor surface goes up, thus to detect the change of the humidity.


16.2. Characteristics

  • The 3-pins ports is easy to plug and play.

  • It can work with micro:bit in 3V.

16.3. Specifications

Item Parameter
SKU EF04024
Power Input 3V-5.5V
Connector Type Analog
Pins Definition 1-Signal 2-VCC 3-GND
Response Quick response with high sensitivity
Circuit Simple
Stablity Stable and durable

16.4. Outlook and Dimensions


16.5. Quick to Start

Materials used and connection diagram

  • Connect to the P1 port as the picture shows

Take sensor:bit for example


Program as the picture shows:

  • Analog read to P1 port and show the value on the micro:bit.



Links: https://makecode.microbit.org/_7cm75DbwJEaY You can also download the links below:


  • The current amount of precipitation is scrolling on the micro:bit.

16.6. Relevant Cases

16.7. Technique Files