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Tactile AAC Board

A 160 phrase Augmentative Alternative Communication device for a nonverbal client. Powered by CircuitPython.

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I was recently tasked with creating a tactile Augmentative Alternative Communication (AAC) device; a speech-generating communicator for someone who is largely nonverbal and has difficulty using touchscreens. 10 x 16 grid of snap-dome buttons covered with a sheet of icons, represent 160 pre-recorded phrases that play when their buttons are pressed. The snap-dome buttons have a nice tactile feel and are covered in a membrane that gives the grid some resistance to spills. While it's designed to sit next to the client on their desk, I added hinges and a battery backup, allowing the board to be folded up and transported. I also created a miniature portable version with 16 phrases and a neck strap for on-the-go communication. Coded in CircuitPython!
  • 1 × Adafruit RP2040 Prop-Maker Feather https://www.adafruit.com/product/5768
  • 2 × Adafruit TCA8418 Keypad Matrix https://www.adafruit.com/product/4918
  • 1 × Speaker, 4 ohm, 3 watt https://www.adafruit.com/product/3968
  • 1 × Adafruit USB Type C Breakout Board https://www.adafruit.com/product/3968
  • 1 × TLV62569 3.3V Buck Converter https://www.adafruit.com/product/4711

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Tom Foth wrote 09/17/2024 at 15:25 • point

While I HUGELY applaud the creation of this keyboard for the intended use, this would be really useful for other purposes, like video production.  Count me a big fan of this project.

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