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projects:i2c_pcf8574_8bit_port_expander [2012/10/21 17:50]
elger created
projects:i2c_pcf8574_8bit_port_expander [2016/11/16 13:06]
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-====== I2C pcf8574 8bit port expander ====== 
-I made a test / prototype setup on a breadboard with two pcf8574 ics ; one for output and one for input. Both connected to the same I2C bus. 
-Adding more digital inputs to an Arduino was my first objective, as I am planning to use this on a project which has buttons that control a menu. 
-For now this little write-up should suffice for the moment I am going to design a PCB for this. 
-===== The breadboard built =====