MGT Square Magnet 10x10x10mm: Applications in Robotics and Practical Selection Guide

Overview: what is the MGT square magnet 10x10x10mm

The MGT square magnet 10x10x10mm is a compact cubic permanent magnet often made from neodymium (NdFeB) or ferrite variants. In robotics it provides strong magnetic flux in a small footprint, making it useful for sensing, holding, coupling and simple actuation. This guide explains key specifications, how to choose the right magnet for common robotics tasks, wiring and placement tips for sensors, and South Africa-relevant considerations like stock availability and branch pickup at Communica.

Key specifications to check

• Dimensions: 10 x 10 x 10 mm (cube).
• Material: neodymium (strong) or ferrite (weaker, cheaper).
• Grade (for NdFeB): e.g., N35, N42 - higher number = stronger.
• Coating: Ni-Cu-Ni, epoxy or Parylene for corrosion resistance.
• Pull force / adhesive force: specified in N (newtons) or kgf.
• Max operating temperature: important where motors/heat are present.

Specification comparison

Selection criteria for robotics projects

Choose a magnet based on magnetic strength, physical fit, environmental resistance and safety. Below are typical robotics use-cases and what to prioritise for each.

Use-case priorities

• Sensor triggering (Hall-effect switches): prefer NdFeB for consistent switching distances and small size.
• Magnetic couplers/quick-release mounts: strong NdFeB with protective coating and correct face contact.
• Mechanical latching and fixtures: ferrite may be adequate where strength is less critical and cost matters.
• Rotor balancing / brushless motor experiments: avoid placing bare magnets near electronics without shielding.

Safety and handling

Small NdFeB magnets are brittle and can chip or shatter if struck. They also attract ferrous tools and other magnets suddenly - handle with care, store in pairs or use separators, and label for workshop safety. When used near sensors or microcontrollers, plan for magnetic interference and document sensor placement in your build notes.

Where to check stock in South Africa

Communica stocks a wide range of maker parts and components suitable for students and engineers. Check local availability and branch pickup at the Branches & Trading Hours page. For product categories and related components see the Collections (Shop by Category).

Magnet + sensor basics: placement and wiring

A common robotics pattern is a Hall-effect sensor detecting the presence or polarity of the MGT square magnet 10x10x10mm. Typical sensors include digital latching Hall switches or analog linear Hall sensors. Mount the magnet so the sensor sees a clear pole orientation (face-on for strong signal).

Simple Hall switch wiring (3-pin)

  +5V ---- Vcc (pin)
  GND  ---- GND (pin)
  Out  ---- MCU digital input (with pull-up if required)

Use standard debouncing in software when a magnet passes quickly. For analog output sensors, map millivolt readings to distance or field strength using calibration samples with the 10x10x10mm magnet.

For more project ideas and components compatible with magnets and sensors, browse Communica's brand pages and full catalogue: Shop by Brand and All Products.

Practical examples and calculations

Below are hands-on examples using the MGT square magnet 10x10x10mm in typical robotics contexts with South African considerations (ZAR costs where estimating and local stock advice).

Example 1: Magnetic latching for a 3D-printed robot arm

Goal: create a removable end-effector mounting using two 10x10x10mm NdFeB magnets embedded in a 3D-printed socket. Estimated pull force per face ~4 kgf; use safety factor 2 for dynamic loads. If the gripper load is 1.5 kg, design for at least 3 kg holding force - two magnets in parallel provide margin. Note: actual pull depends on contact surface; test samples before finalising CAD.

Example 2: Counting wheel revolutions with a Hall sensor

Attach a 10x10x10mm magnet to a wheel hub; place a digital Hall switch nearby. Each passing magnet transition triggers an interrupt on the microcontroller. Use software debouncing and measure RPM. For classroom use, a single magnet per wheel suffices; for higher resolution, place multiple magnets evenly around the hub.

Simple magnetic field estimation

A practical rule: field strength drops rapidly with distance. For small cubic NdFeB magnets, the sensor activation distance might range from a few millimetres to ~15 mm depending on grade. Calibrate by recording sensor output at set gaps (in mm) and tabulate results for repeatable builds.

Troubleshooting and tips

Common issues include inconsistent triggering, magnet chipping, and interference with nearby compasses or sensors. Steps to troubleshoot:

• Verify pole orientation and distance with a gauss meter or calibrated sensor.
• Test in the actual assembly; magnets behave differently near steel or thick casings.
• Use spacers or non-magnetic housings to keep magnets at designed distances.
• Apply protective coating or embed magnets to reduce chipping; replace any cracked magnets.

Procurement and SA-specific advice

For students and makers ordering in South Africa, check stock levels and branch collection options to avoid project delays. Communica's Samrand warehouse and branches in Pretoria and Cape Town can be useful for rapid pickup - see About Us for company background and the branch page for collection details. When ordering for labs or procurement, request VAT invoices and account quotes where relevant to keep procurement records tidy.

Accessory bundles and complementary parts

Useful complementary items include Hall-effect switches, adhesive-backed magnet housings, M3 stainless steel screws for mounting, and thin non-magnetic washers for spacing. For broader component choices and tools, explore the Communica collections and product index at Collections and All Products.

Sources

• Communica - About Us
• Communica - Collections (Shop by Category)
• Neodymium magnet - Wikipedia
• Hall-effect sensor application notes - Microchip