Octopus Rain/Steam Sensor

Octopus Rain/Steam Sensor Brick sensor can be connected to the Arduino IO Expansion shield directly. The output voltage will increase when the humidity of the sensor surface goes up. You can even use it as a touch panel.

It also works with micro:bit at 3 V: plug it into a breakout board such as sensor:bit and read it as an analog input in MakeCode (ElecFreaks EF04024).

Specifications

• Power supply: 3.3 V or 5 V
• Output voltage signal: 0–3.0 V (at 3.3 V) or 0–4.5 V (at 5 V)
• Interface: analog
• Pin definition: 1 Signal, 2 VCC, 3 GND
• Size: 30 x 20 x 6 mm

Applications

• Simple rain detector
• Steam level switch
• Touch sensor based on humidity

Note: the connector is not waterproof; do not put it directly in water.