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