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Amazon.com: CQRobot Ocean: Relay Module, 5V to 30V Input/Output, DC2.1 Interface, Compatible with Raspberry Pi/Micro:bit/Arduino/Other Control Boards. for Robot, Gardening, Smart Home, RC Car and Other Projects. : Electronics
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DFRobot Gravity - connection cable - for digital sensors to Arduino - 3-pin - 50cm - 10pcs. Botland - Robotic Shop
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Gravity - Sensor connection cable for Arduino - 4-pin - I2C/UART - 50cm - 10pcs. Botland - Robotic Shop
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Amazon.com: CQRobot Ocean: MCP23017 IO Expansion Board Compatible with Raspberry Pi/Micro:bit/Arduino/STM32 Motherboard. I2C Interface, Expands 16 I/O Pins, Up to 8 Expansion Boards Can be Used Simultaneously. : Electronics
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