Elecfreaks Octopus Water Level Sensor

Elecfreaks Octopus Water Level Sensor is a compact and practical water level sensor, belonging to the Elecfreaks Octopus module family. The sensor detects the water level using surface-mounted components (exposed parallel wires) and converts the water level into an analog signal suitable for direct reading by Micro:bit or compatible platforms.

Key Features
Smart and Customizable Design
Octopus-compatible physical interface, including mounting holes and standard connectors for ease of use and integration into educational projects

Simple access to water measurement
Water level is detected via exposed parallel wires; readings are output as an analog signal that can be easily processed by the Micro:bit

Voltage Levels and Compatibility
Operates at 3–5.5V DC, with three pins: G‑GND, V‑VCC and S‑signal for easy and convenient connection

Compact Size and Weight
Dimensions: only 59.15×19mm, and a net weight of approximately 5.5g — ideal for fitting into small and cramped projects

Simple Alert and Display
Allows you to set a “water level indication” option when the analog value crosses a certain threshold, for example by reading analog‑read on P1 in MakeCode.

Important Caution
Avoid leaving non-waterproof parts, such as the connectors and board, underwater.