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ElecFreaks

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The Octopus Crash Sensor Brick is a simple collision detection module based on a momentary crash switch. When physical contact is made, the switch triggers a...

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The Octopus Crash Sensor Brick is a simple collision detection module based on a momentary crash switch. When physical contact is made, the switch triggers a digital signal — making it ideal for bump detection in robotics, limit switches in CNC or 3D printer projects, and basic button input.

Part of the ElecFreaks Octopus series of modular sensor bricks, it features a standard 3-pin interface for easy connection to micro:bit, Arduino, and other microcontroller platforms.

Key Features

  • Crash Switch Based – Reliable momentary contact detection with high sensitivity
  • Digital Output – Simple HIGH/LOW signal for easy integration
  • 3-Pin Interface – Standard GND, VCC, and Signal connections
  • Compact Brick Format – Octopus series form factor for modular project builds

Ideal For

  • Bump/collision detection on robots and vehicles
  • Limit switches for mechanical projects
  • Simple momentary input for micro:bit and Arduino projects
  • STEM and classroom electronics activities

Package Contents

  • 1× Octopus Crash Sensor Brick

Jargon buster

Plain-language definitions for the technical terms used above.

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.
microcontroller
A microcontroller is a small computer on a single chip that runs a stored program and controls connected inputs and outputs such as buttons, sensors, displays and communication interfaces. In a device built around one, it is the part that executes the code and coordinates the device's behaviour.
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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