- Sat Feb 16, 2019 3:57 pm
#80595
I have an existing Node MCU ESP8266 implementation in which I have used all of the Digital I/O (D0 thru D8) pins. I would like to now add a I2C LCD display and I need to know if it's possible to use GPIO other than the digital I/O. For instance, given the I2C constructor Wire.begin(int sda, int scl), can SCL be defined as CLK (GPIO6) and SDA be defined as SD0 (GPIO7)? If not, are there other of the GPIO pins than can be used for data and clock for an I2C device?
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