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Main image of Waveshare AW9523B IO Expansion Board I2C Interface Allows Using 4 Expansion Boards at The Same Time Allows Expanding Up to Expands 16 I/O Pins Compatible with Raspberry Pi

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Waveshare AW9523B IO Expansion Board I2C Interface Allows Using 4 Expansion Boards at The Same Time Allows Expanding Up to Expands 16 I/O Pins Compatible with Raspberry Pi

Item #: 9SIVAMDM9A5503
Mfr. Part #: 69044406237

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Support driving 16-ch common anode constant current LED, 256-step linear dimming, current controllable.

Overview

Specs

Reviews

Controlled via I2C Bus. Allows using 4 expansion noards at the same time. Allows expanding 16 I/O ports by just using two wires.
Support driving 16-ch common anode constant current LED, 256-step linear dimming, current controllable.
Output interrupt (INT) signal when changing the state of an input port. I2C address configurable by shorting the A0/A1 jumpers.
Provides two connector options: PH2.0 header and/or solder pads, allows multi I2C modules to be stacked. Onboard voltage translator, compatible with 3.3V/5V level.
With development resources and manual on product description (examples for Raspberry Pi / micro:bit / Arduino / STM32).

Additional Information
First Listed on Newegg	October 30, 2026

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Item#: 9SIVAMDM9A5503