Inductive Sensing 32-Position Encoder Knob Reference Design using the LDC0851
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.
- 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
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Design files & products
Download ready-to-use system files to speed your design process.
Reference design overview and verified performance test data
Detailed schematic diagram for design layout and components
Complete listing of design components, reference designators, and manufacturers/part numbers
Detailed overview of design layout for component placement
Files used for 3D models or 2D drawings of IC components
Design file that contains information on physical board layer of design PCB
PCB layer plot file used for generating PCB design layout
Includes TI products in the design and potential alternatives.
MSP430F5500 — 25 MHz MCU with 8KB Flash, 4KB SRAM, comparator, DMA, UART/SPI/I2C, USB, timer, HW multiplierData sheet: PDF | HTML
|*||Design guide||LDC0851 Incremental Rotary Encoder Design Guide||Jan. 28, 2016|
|More literature||Incremental Rotary Encoders (Rev. B)||PDF | HTML||Dec. 02, 2021|
|More literature||TIDA-00828 Firmware||Mar. 30, 2016|
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