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OLED Shield for Arduino & Raspberry Pi
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Shop arduino i2c expander

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$2.49
$4.97
1PCS PCF8575 IO Expander Module - I2C To 16IO Conversion, For Arduino
Aliexpress
49% off
$2.49
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1PCS PCF8575 IO Expander Module - I2C To 16IO Conversion, For Arduino
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PCF8574T I2C Interface Module (1PCS): 2.5V-6V I/O Port Expander With Cascading Support For Arduino
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