Software
Code example or demo
TIDM-PROXIMITYSENSING
10-cm Capacitive Proximity Detection Reference Design
TIDM-PROXIMITYSENSING
Overview
This reference design, featuring the Value Line MSP430 MCUs (MSP430G2xx) with unique PinOsc capability, can implement a simple mechanism to measure capacitance. This capability not only allows for touch detection, but also provides enough sensitivity to support proximity applications. This implementation demonstrates a 10+ cm proximity range.
Features
- Low power, simple capacitive proximity sensing application
- Leverages unique pin oscillation I/O available on MSP430 Value Line MCUs
- Demonstrates greater-than 10cm proximity range detection
- Implements the "Fast RO" method for a portable, battery powered consumer product
- Includes all hardware & software design files
- PC-side GUI is also available to aid in development
Personal electronics
A fully assembled board has been developed for testing and performance validation only, and is not available for sale.
Design files & products
Design files
Download ready-to-use system files to speed your design process.
TIDR079.PDF (134 K)
Detailed schematic diagram for design layout and components
TIDR100.PDF (150 K)
Complete listing of design components, reference designators, and manufacturers/part numbers
TIDC055.ZIP (236 K)
PCB layer plot file used for generating PCB design layout
Products
Includes TI products in the design and potential alternatives.
MSP430 microcontrollers
MSP430G2553 — 16 MHz MCU with 16KB Flash, 512B SRAM, comparator, UART/SPI/I2C, timer
Data sheet: PDFStart development
Technical documentation
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| Type | Title | Date | ||
|---|---|---|---|---|
| * | Application note | 10-cm Capacitive Proximity Detection With MSP430 Microcontrollers (Rev. A) | Jul. 08, 2013 |
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