IO Expander for XIAO

SKU: SS103030415 Brand: Seeed Studio

Retired Product

This product has been replaced by: Xiao IO Expander
This product is no longer available. This page is only for reference.

IO Expander for XIAO is a solderable expansion board that perfectly matches Seeed Studio XIAO series. It offers 16 extra IOs, 2 power outputs, and a Grove IIC port, along with extra output pads(GND, INTB, INTA, and RST), providing configurable I2C address for allowing dual expansion boards to work simultaneously. All of these are solderable and will enhance your creativity.

Features

Solder pads expansion board: Powered by the MCP23017, it provides solderable 16 extra IOs, 2 power output, 1 Grove IIC bus port, along with extra output pads, including GND, INTB, INTA, and RST
I2C Interface with configurable address: Default I2C address is 0x21, but can be configured to 0x20, which allows dual expansion boards working at the same time
Designed for Seeed Studio XIAO: Highly compatible with all XIAO series products, highly expand your current project
Solder-friendly: Multiple solder pads, every function solderable, compatible with bread board
Thumb-sized Compact Design: 21 x 17.5mm, adopting the classic form factor of XIAO, suitable for space limited projects like wearable devices

IO Expander for XIAO is a solderable expansion board that perfectly matches Seeed Studio XIAO series, designed to expand the connectivity and enhance the functionality.

Powered by the MCP23017, it utilizes IIC port with high communication of 400 kHz, to break out additional solderable 16 extra IOs, where they can output up to 25mA and the input mode can be configured to pull up. Meanwhile, it also provides 2 power outputs (2 VCC and 2 GND), 1 Grove IIC bus port, along with extra output pads, including GND, INTB, INTA, and RST.

This board also provides J1 pads and J2 pads where J1 pads allow the pins RST, INTB, and INTA of the MCP23017 chip to be connected to the pins D6, D1, and D0 of the XIAO board, and J2 Pads pads are used for selecting the IIC address of the MCP23017 chip. The selectable II2 address ensures one Seeed Studio XIAO board can connect with two IO Expander boards, to have a total 32 IOs for extensive application.

The expansion board features Grove pads that are designed for connecting Grove modules using soldered Grove sockets. These pads are connected to the I2C bus, enabling seamless integration with compatible Grove modules.

It adopts XIAO 21 x 17.5mm compact design, everything is solderable and would be perfect for solder enthusiasts.

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Retired

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40 Aruma Place
Cardiff
NSW, 2285
Australia

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