ATSAMC20-QTRDEMO Development Boards, Kits, Programmers

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ATSAMC20-QTRDEMO Application Field and Working Principle

The ATSAMC20-QTRDEMO board, which is part of Microchip technology’s ATSAMxxx series of evaluation boards, is a complete kit for develop and evaluate tactile sensor applications involving capacitive touch technology. It features the ATSAMC20 core, A-PIC, EBI, and ADC. It provides several development options for advanced application development, such as development of embedded applications, multiprocessor designs, touch sensing capabilities, etc.

Application Field

The ATSAMC20-QTRDEMO board is mainly used in the development of capacitive sensing applications, ranging from applications such as buttons or sliders to more sophisticated ones, such as medical or industrial sensing. It is also suitable for touch sensing applications involving human-machine interfaces (HMI) and embedded system designs. The board features a comprehensive set of buttons and sensors, such as tapping and pressure sensing to provide full flexibility for optimizing the performance of the sensor system.

Main Components

The ATSAMC20-QTRDEMO has several main components. It contains the ATSAMC20 core, a 64 MHz ARM Cortex-M0+ microcontroller, and 32k RAM and 256 k Flash memory. It also includes an A-PIC, along with a rich set of peripherals, such as I2C, USART, and SCH peripherals. In addition, the board has a PWM peripheral, an ultra low-power SMART 10-bit ADC, and up to 14 capacitive touch buttons and up to 3 capacitive touch sliders. It also includes a temperature and humidity sensor, and a four-segment graphic LCD.

Design Benefits

The ATSAMC20-QTRDEMO board has several benefits that make it suitable for use in embedded design applications. For starters, it features an ultra low-power design that provides up to nine years of battery lifetime. It also features a high sampling rate of up to 200 Hz, which provides high speed and accuracy for sensing applications. The board also has multiple development options, and provides on-board debugging, which makes it easy to develop and test applications.

Working Principle

The ATSAMC20-QTRDEMO board is based on the QTEC4049 capacitive sensing technology. The working principle involves measuring the capacitance between two electrodes, and then using that information to determine the location of a finger or any other object on the touch sensor. The touch sensing system works by a complex algorithm that combines information from various sensors with the software to provide accurate response and detection. The accuracy and speed of the touch sensing system depend on various factors, such as the size of the electrodes, the environment of the system, and the power supply. Once the touch sensing system is configured correctly, it can detect the position of an object within a few milliseconds.

Conclusion

The ATSAMC20-QTRDEMO board is an ideal choice for advanced embedded design applications, and is suitable for applications involving capacitive touch sensing. It features an ultra low-power design, and provides on-board debugging and development options. It also has a rich set of features, such as a PWM peripheral, a SMART ADC, as well as a sensor array with up to 14 capacitive touch buttons and 3 capacitive touch sliders. It works based on the QTEC4049 capacitive sensing technology, and can accurately detect the position of an object within a few milliseconds.

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