Adafruit
Adafruit FT232H Breakout - General Purpose USB to GPIO+SPI+I2C
The Adafruit FT232H Breakout turns your computer into a versatile interface for hardware protocols. Using the FTDI FT232H chip with its multi-protocol synchr...
The Adafruit FT232H Breakout turns your computer into a versatile interface for hardware protocols. Using the FTDI FT232H chip with its multi-protocol synchronous serial engine, you can communicate directly with I2C, SPI, JTAG, and serial UART devices — plus read and write digital GPIO pins — all from your computer over USB, with no microcontroller required.
This is especially useful for rapid prototyping and testing with Python. You can drive OLED displays, read sensors, flash LEDs, and more directly from your computer without needing to write and upload firmware to a separate board. The breakout includes an FT232H chip and an EEPROM for on-board configuration, and works with Mac, Windows, and Linux.
Key Features
- FT232H Multi-Protocol Engine – Speaks SPI, I2C, serial UART, JTAG, and more over USB
- Digital GPIO – Read switches/buttons and write to LEDs directly from your computer
- No Microcontroller Needed – Connect sensors and devices straight to your computer via USB
- Python Support – Use Python libraries to control hardware on Mac, Windows, and Linux
- On-Board EEPROM – For device configuration
- USB Powered – No external power supply required
Ideal For
- Rapid prototyping and testing I2C/SPI devices from a computer
- Python-based hardware control without a microcontroller
- JTAG debugging
- Driving displays, sensors, and LEDs directly from USB
Package Contents
- 1× Adafruit FT232H Breakout
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout is a small circuit board that makes a tiny or hard-to-solder component easier to connect to with standard pins. It matters because this OLED module can be wired into a microcontroller project without needing to solder directly to the display’s fine contacts.
- EEPROM
- A type of non-volatile memory that keeps stored data even when power is turned off. In a sensor module, it can be used to store settings or calibration data so they do not need to be re-entered every time.
- GPIO
- General-purpose input/output pins are microcontroller pins you can set in software to read signals, switch devices on and off, or connect to peripherals. The number of GPIO pins matters because it limits how many buttons, LEDs, sensors, and other parts you can wire directly to the board.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- JTAG
- JTAG is a hardware debugging and programming interface used to inspect and control chips at a low level. It matters for advanced development because it can help diagnose firmware problems that are hard to see through normal serial output.
- microcontroller
- A microcontroller is a small computer on a chip that runs your program and controls connected inputs and outputs. For this product, it is the part that reads buttons and sensors, drives the display and speaker, and communicates over Bluetooth.
- OLED
- OLED stands for organic light-emitting diode, a display type where each pixel produces its own light. It matters because OLED screens are thin, high-contrast and easy to read for small status displays, but they can be more sensitive to image burn-in than some other display types.
- SPI
- A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
- UART
- UART is a simple serial connection that sends data over separate transmit and receive wires, often labelled TX and RX. It matters because this module is designed to replace a wired UART cable with a wireless link while keeping the same serial data format.
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