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COMING SOON – Machine Learning BrainCraft HAT for Raspberry Pi 4

4374

COMING SOON – Machine Learning BrainCraft HAT for Raspberry Pi 4


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The idea behind the BrainCraft board (stand-alone, and Pi “hat”) is that you’d be able to “craft brains” for Machine Learning on the EDGE, with Microcontrollers & Microcomputers. On ASK AN ENGINEER, our founder & engineer chatted with Pete Warden, the technical lead of the mobile, embedded TensorFlow Group on Google’s Brain team about what would be ideal for a board like this.

And here’s a first look! We’ve started to design a BrainCraft HAT for Raspberry Pi and other Linux computers. It has a 240×240 TFT display for inference output, slot for camera connector cable for imaging projects, a 5 way joystick and button for UI input, left and right microphones, stereo headphone, stereo speaker out, three RGB DotStar LEDs, two 3 pin STEMMA connectors on PWM pins so they can drive NeoPixels or servos, and Grove/STEMMA/Qwiic I2C port. This should let people build a wide range of audio/video AI projects while also allowing easy plug-in of sensors and robotics!

Most importantly, there’s an On/Off switch that will disable the audio codec, so that when it’s off there’s no way it’s listening to you!

4374 front

4374 back

Inputs:

  • Loads of sensors!
  • More sensors can be connected via plug-n-play stemmaQT
  • Image sensors, like a camera, or ‘image sensors’ like the Panasonic Grid-EYE. Heat-Sensitive cameras can be used as a person detector, even in the
  • dark!
  • Microphone, voice detection for powering on/off
  • Accelerometer for gestures, vibration sensing. Could be useful for machinery/industrial predictive maintenance.

Outputs:

  • Screen display for debugging
  • Speaker for audio feedback as to what is going on.
  • Relay control to turn things on/off, etc. and/or other actuators.

Connectivity:

  • NB / Narrowband IoT? Wireless flexibility: WiFi, cellular, Bluetooth LE
  • Works with adafruit.io, of course!

Power:

  • Battery powered / low-power.
  • Solar add-ons or energy harvesting. Make OK with lots of power sources that are not reliable.
  • On/Off switch!

Coming soon!


Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.

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