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![Waveshare I / O expander with PCF8574 chip Waveshare I / O expander with PCF8574 chip](https://kamami.pl/30983-large_default/waveshare-i-o-expander-with-pcf8574-chip.jpg)
The PCF8574 IO expansion board is an 8-bit I / O expander controlled by the I2C interface. Up to 8 PCF8574 IO expansion cards can be connected to the I2C bus, providing up to 64 I / O ports. Waveshare 3708
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The PCF8574 IO expansion board is an 8-bit I / O expander controlled by I2C. It has 8 outputs / inputs GPIO. Up to 8 PCF8574 IO expansion cards can be connected to the I2C bus, providing up to 64 I / O ports. The PCF8574 IO expansion board has two goldpin connectors with I2C - one on the other side of the module. Thanks to this, connecting the kit with the microcontroller to the board is more flexible.
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collective work, J. Szabatin (ed.), K. Radecki (ed.)
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The PCF8574 IO expansion board is an 8-bit I / O expander controlled by the I2C interface. Up to 8 PCF8574 IO expansion cards can be connected to the I2C bus, providing up to 64 I / O ports. Waveshare 3708