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Sinelec Technologies
FT232RLのボードをPythonのGPIOとして使って見ました - 趣味のマイコンいじり
Adafruit FTDI ft232h Breakout, USB to GPIO, SPI, i2c, UART, JTAG, Serial, 2264 | eBay
Quad GPIO Expander For Raspberry Pi Pico, Four Sets Of Male Headers For Connecting More Expansion Modules, USB Power Input Connector | Pico-Quad- Expander
8 Channel USB GPIO Module With Analog Inputs_ Botland - Robotic Shop
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USB digital GPIO I/O extender
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Adafruit MCP2221A Breakout - General Purpose USB to GPIO ADC I2C - Opencircuit