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Wilko Vehreke
Wilko Vehreke

Wilko Vehreke

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Wilko Vehreke
Wilko Vehreke
Jan 31, 2018 · 4 min read

More GPIOs for the ESP8266 with the MCP23017

If you need more digital input/output pins in your ESP8266/Arduino/Raspberry PI project, the MCP23017 might be what you want.

For just about 1€ you get 16 additional ports . This port expander provides you 16 more GPIOs and…

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