Touch on metal capacitive sensing add-on board for the CapTIvate™ development kit


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The CapTIvate™ metal touch panel (CAPTIVATE-METAL) is an add-on board for the CapTIvate development kits (CAPTIVATE-FR2633 or CAPTIVATE-FR2676) that allows designers and engineers to evaluate touch on metal technology. This alternative technology to traditional capacitive touch sensors enables elegant designs of touch modules using stainless steel, aluminum alloys, brass and bronze.

MSP430™ MCUs with CapTIvate technology use an alternate approach for metal overlays. The stack-up comprises a printed circuit board with traditional capacitive touch sensors and a spacer topped with a metal overlay that is grounded. This mechanical structure forms a variable capacitor that generates changes in its value when force is applied to the buttons, sliders or wheels. The sensitivity of the CapTIvate peripheral allows detection of a few micron level deflection of the metal plate.

As an actuation force is needed to interact with the buttons, metal overlays are water proof, dirt proof and also work with thick gloves. Furthermore, based on the force and amount of deflection, designers can implement features incorporating pressure sensing or force on the buttons, sliders and wheels.

  • Capacitive touch with metal overlays
  • Variable force touch detection
  • Multi-key touch
  • 7-segment display feedback
  • Water, gunk and dirt proof

  • CAPTIVATE-METAL sensor board
  • CAPTIVATE-PGMR not included; CAPTIVATE-PGMR is required for tuning and programming
  • CapTIvate MCU Board (i.e. CAPTIVATE-FR2633 or CAPTIVATE-FR2676) not included
  • MSP-CAPT-FR2633 CapTIvate MCU development kit not included

MSP430 microcontrollers
MSP430FR2532 Capacitive Touch MCU with 8 touch IO (8 sensors), 8KB FRAM, 1KB SRAM, 15 IO, 10-bit ADC MSP430FR2533 Capacitive Touch MCU with 16 touch IO (24 sensors), 16KB FRAM, 2KB SRAM, 19 IO, 10-bit ADC MSP430FR2632 Capacitive touch MCU with 8 touch IO (16 sensors), 8KB FRAM, 2KB SRAM, 15 IO, 10-bit ADC MSP430FR2633 Capacitive Touch MCU with 16 touch IO (64 sensors), 16KB FRAM, 4KB SRAM, 19 IO, 10-bit ADC MSP430FR2676 Capacitive Touch MCU with 16 touch IO (64 sensors), 64KB FRAM, 8KB SRAM, 43 IO, 12-bit ADC, 105C
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Design and develop capacitive touch applications with the CAPTIVATE-FR2676

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Evaluation board

CAPTIVATE-METAL — Touch on metal capacitive sensing add-on board for the CapTIvate™ development kit

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Technical documentation

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Type Title Date
* More literature CapTIvate Technology Guide 19 Jul 2016
Data sheet MSP430FR263x, MSP430FR253x Capacitive Touch Sensing Mixed-Signal Microcontrollers datasheet (Rev. E) PDF | HTML 09 Dec 2019
Certificate CAPTIVATE-METAL EU Declaration of Conformity (DoC) 02 Jan 2019
Technical article Modern, sleek and durable touch on metal HMIs PDF | HTML 16 Nov 2017
Application note Capacitive Touch Through Metal Using MSP430™ MCUs With CapTIvate™ Technology (Rev. A) 31 Oct 2017

Related design resources

Software development

MSPCAPTDSNCTR CapTIvate™ Design Center GUI for MSP430™ Capacitive Sensing MCUs

Reference designs

TIDM-CAPTIVATE-E-LOCK MSP430FR2633 Microcontroller CapTIvate Electronic Lock and Keypad Reference Design TIDM-CAPTOUCHEMCREF Noise Tolerant Capacitive Touch HMI Reference Design

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