The Adafruit BrainCraft HAT is a Raspberry Pi 4 add-on board designed for machine learning and AI projects at the edge. It combines a display, stereo microphones, audio output, camera connector, user controls, and sensor ports into a single HAT, providing everything needed to build audio and video AI applications.

With a 240×240 IPS TFT display for inference output, stereo microphones for voice input, and a camera connector slot for imaging projects, the BrainCraft HAT supports a wide range of TensorFlow Lite and other ML workloads. A controllable mini fan keeps the Pi cool during intensive inference calculations.

Key Features

• 1.54" IPS TFT Display – 240×240 resolution for displaying text, video, or inference results
• Stereo Microphones – Dual microphone input for voice assistant and audio ML projects
• Stereo Speaker Output – 1W per channel for text-to-speech, alerts, or audio playback
• Stereo Headphone Output – 3.5 mm jack for headphones or powered speakers
• Camera Connector Slot – Pass-through for Raspberry Pi camera cable
• 5-Way Joystick + Button – User interface and navigation control
• 3× RGB DotStar LEDs – Programmable LED feedback
• 2× 3-Pin STEMMA Connectors – PWM pins for NeoPixels, servos, or buttons
• STEMMA QT / Qwiic / Grove I2C Port – Plug-and-play sensor expansion
• Controllable Cooling Fan – Attaches to the bottom to keep the Pi cool during AI workloads
• Hardware Audio Privacy Switch – Completely disables the audio codec when off

Ideal For

• TensorFlow Lite and edge ML inference on Raspberry Pi
• Voice assistants and smart home audio projects
• Computer vision and image classification
• Thermal imaging with STEMMA QT heat sensors (e.g., Grid-EYE, MLX90640)
• Industrial predictive maintenance with vibration/accelerometer sensing

Package Contents

• 1× Adafruit BrainCraft HAT
• 1× Controllable mini cooling fan