Sometimes a rotary potentiometer is inaccurate and sticky, and full encoders are bulky and costly. neoPLC has a solution in this touch-free Hall Effect Encoder board. By attaching a small magnet on any rotating shaft or body nearby, this IC will measure the angle of the magnet with 12-bit precision and with no friction nor drag. Ideal for feedback control of everything from feedback control demo projects (like inverted pendulums) to full robotic systems and creating your own servo motor from a low-cost stepper. Small disk magnet included. Fits nicely on the back of a NEMA8 stepper motor.

SPECS:

• 12-bit hall effect rotary encoder, requires diametrically magnetized disk magnet in close-proximity to the bottom of the board, with rotation centered on, and perpendicular to, the board.
• Sensor reads from 0-360 degrees with 0.09 deg precision, 1.5 LSB RMS noise in internal tests.
• Not appropriate for high speed applications since effective sample rate using i2c is limited to 2 kHz depending on filter settings.
• Note: this IC does not allow address shifting so it is not recommended for projects where multiple encoders are needed on a single i2c bus.