Sensors / Proximity / Magnetic

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...

Yow! These things are super powerful. 1/2" diameter, 3/16" thick discs, south side is marked with a red line. Great for use with your SpokePOV Kit. If you have an aluminium frame, use tape/foamstickytape to attach it.

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...

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...