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Electronics news

TRRS Trinkey development board

Adafruit, an open source hardware company, has introduced a new TRRS Trinkey development board designed to connect assistive technology (AT) switches to a computer via USB.

The board measures 42.0 x 15.0 x 6.5mm and includes a 3.5mm TRRS headphone jack and a USB-A connector. Inside the board is a Microchip ATSAMD21E18 microcontroller with an Arm Cortex-M0+ core, which can be programmed using the Arduino IDE or CircuitPython.

The TRRS pins on the board switch to input, ground, or a 3.3 volt power supply. The board also has an Adafruit STEMMA QT connector for connecting peripherals such as sensors and displays. The TRRS Trinkey easily converts signals from AT switches into programmable actions on a computer. The board is available for purchase at $9.95 on the manufacturer's website.