ElecFreaks
Octopus Water level sensor
The Octopus Water Level Sensor detects water level using exposed parallel traces on the PCB. As the water level rises, more traces are submerged, producing a...
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The Octopus Water Level Sensor detects water level using exposed parallel traces on the PCB. As the water level rises, more traces are submerged, producing a higher analogue signal output. Compatible with micro:bit (3 V) and other microcontrollers operating at 3–5.5 V.
Part of the ElecFreaks Octopus series, this sensor uses the standard 3-pin connector (GND, VCC, Signal) for easy plug-and-play connection with Octopus:bit and similar breakout boards.
Key Features
- Analogue Output – Signal proportional to water level for easy threshold detection
- 3-Pin Connection – GND, VCC, Signal for simple wiring
- micro:bit Compatible – Works at 3 V; read analogue values via MakeCode
- Compact – 59.15 × 19 mm, 5.5 g
Specifications
- Working Voltage: 3–5.5 V DC
- Connection: G (GND), V (VCC), S (Signal)
- Dimensions: 59.15 × 19 mm
- Weight: 5.5 g
Ideal For
- Water level monitoring and alarms
- micro:bit science projects
- Simple liquid level detection
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout board carries a small or fine-pitched component and brings its connections out to standard, breadboard- and header-friendly pins. Describing a part as a breakout means it can be wired into a project without soldering directly to the component's tiny contacts.
- DC
- DC means direct current, where electricity flows in one constant direction, as supplied by batteries, USB ports and many plug-pack power supplies. When a product specifies DC, it runs from a DC supply rather than mains AC, so you need to provide the correct voltage and polarity.
- GND
- GND is the ground or reference connection (0 V) for a circuit. When connecting two devices together, their grounds must be joined so both agree on what counts as a low or high signal.
- PCB
- A printed circuit board (PCB) is a board, usually rigid, with etched copper tracks that connect electronic components together without loose wiring. Components are mounted on the board and signals route between them through the copper layout.
- VCC
- VCC is the positive power-supply connection on a chip or module. Connecting it to the correct supply voltage is needed for the part to power on and helps avoid damaging the electronics.
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Sensors & Input
Related Tutorials
Free guides on learn.littlebird.com.au
