Capacitive Touch Sensing Tools

Texas Instruments Incorporated (Dallas, TX) has announced a new software library, sensor tuning GUI, design collateral, and support for additional microcontrollers (MCU). TI’s MSP430™ MCUs operate at less than 1μA average current per button. TI’s open source MSP430 Capacitive Touch Software Library now allows developers to use the MSP430G2xx5 Value Line devices and Wolverine MSP430FR58xx/FR59xx devices for button, slider, wheel, and proximity capacitive touch applications.

New advanced tools include the MSP430 Capacitive Touch Pro graphical user interface (GUI), a PC-based tool that enables designers to evaluate, diagnose and tune capacitive touch button, slider and wheel designs in real time. TI’s MSP430 Capacitive Touch Power Designer GUI and application note also allow users to estimate power consumption for a capacitive touch system.

The new Capacitive Touch Sensing, MSP430 Button Gate Time Optimization and Tuning Guide optimizes button performance for reduced power consumption, improved response times, and scalability to include more buttons. TI’s new Capacitive Touch Sensing, MSP430 Slider and Wheel Tuning Guide helps developers lay out sliders and wheels, using multiple electrodes and software to provide the most linear representation of raw capacitive data. The Capacitive Touch Sensing, Sensor Design Guide reveals design considerations and best practices for capacitive touch hardware design, including schematics, mechanicals, and layout.

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