An inductive sensing based incremental encoder knob design can provide a robust and low-cost interface for control inputs. It can reliably operate in environments which have dirt, moisture, or oil which would pose issues for alternate sensing technologies. This solution requires no magnets.
Features:
- High reliability, contactless, encoder implementation suitable for dirty, wet, and other challenging environments
- Scalable to support multiples of 4 positions/rotation
- Minimal MCU requirements
- No permanent magnets required; operates effectively even with magnetic or electrical environmental interference
Parts Include:
LDC0851 Differentially Compensated and Highly Accurate Inductive Switch
LP5951 Micropower 150mA Low-Dropout (LDO) CMOS Voltage Regulator
MSP430F5500 Mixed Signal Microcontroller
TPD2E001 Low-Capacitance 2-Channel +/-15kV ESD Protection Array for High-Speed Data Interfaces
Learn more by downloading the reference design below
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