Sensors / Proximity / Magnetic

This sensor is essentially a reed switch, encased in an ABS plastic shell. Normally the reed is 'open' (no connection between the two wires). The other half is a magnet. When the magnet is less than 13mm (0.5") away, the reed switch closes. They're often used to detect when a door or drawer is open, which is why they have mounting tabs and screws. You can also pick...

Yow! These things are super powerful. .47" diameter and .18" thick discs. Great for use with your SpokePOV Kit. If you have an aluminium frame, use tape/foam sticky tape to attach it.

Hall effect sensors detect whether a magnet is near. Useful for non-contact/waterproof type switches, position sensors, rotary/shaft encoders. I tried dozens of different hall effect sensors to see which one would work best for the SpokePOV kit (to determine the wheel location) and this one came out on top! Runs at 3.5V up to 24V. To use connect power to pin 1 (all...

This is a breakout for the Texas Instruments DRV5032 Digital Magnetic Hall Effect Sensor. It is the perfect way to add magnetic sensing to your project. The sensor has a digital output that indicates when the magnetic flux density threshold has been crossed. The device integrates a Hall effect element, analog signal conditioning, and a low-frequency oscillator that...

Sense the magnetic fields that surround us with this handy triple-axis magnetometer (compass) module. Magnetometers can sense where the strongest magnetic force is coming from, generally used to detect magnetic north, but can also be used for measuring magnetic fields. This sensor tends to be paired with a 6-DoF (degree of freedom) accelerometer/gyroscope to create a...

Add rotational sensing - without a mechanical connection - with the Adafruit AS5600 Magnetic Angle Sensor. Featuring the classic ams AS5600, this board can sense a rotating N/S magnetic field up to 3mm away from the chip body. These sensors are often used to create 'frictionless' rotary encoders or potentiometers, without the risk of mechanical failure or noise....

This is an interesting sensor component from the CNC world - a steel strip that has a precision magnetic pattern embedded in it. Also known as a Multi-Pole Magnetic Strip, it contains alternating North and South pole magnetic fields along the length of the tape at 5mm spacing. You can see our demo above with a magnetic view film Using a magnetometer, hall effect...