With a 3D magnet sensor that costs $1 and a 15 cent magnet we are able to measure water flow rate, joystick movement, linear slide position and position of a knob.
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Email me your Altium files (roman@romankozak.com) and I will pay to have your PCB manufactured and shipped (5 opportunities remain).
The sensor can detect the position and movement of a magnet in 3D space. It does this with 3 internal hall effect probes, one along each axis of the sensor. The hall probes measure magnetic flux density. This means if a magnet is attached to a slider, ball and socket or rotary shaft the position and movement of those mechanical components can be known in a system. A 3D magnetic sensor provides a contactless position sensing alternative to applications which traditionally use mechanical or optical solutions.The most common being a potentiometer.
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Advantages:
- contactless sensing
- cost sensitive
- not sensitive to dirt
- tactile feeling can designed by mechanical interface
- higher range of motion compared to linear hall solution
- positioning between sensor and sliding interface is very flexible
- enables pass by configurations