Hi - I'm kind of new to i2c but I have a need to have 2 Arduinos talk to each other so I was thinking of using the i2c. Wired up the master and slave and loaded the example sketches and all works fine. I then wanted to add a oled screen to the slave for some features. The screen seems to work but …

Life is simpler if one Arduino is always Master. And the other is always a Slave. The Master "speaks" to the Slave whenever the she wants. The Slave does as he is told. The Master can periodically ask the Slave if the Slave wants to talk to her. The OLED is always going to be a Slave. The …

Adafruit_SSD1306 and Wire serial communication

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anon73444976 November 26, 2021, 7:55pm 4

I have to confess, I've never tried to change the rôle of a slave, but it's unlikely to be an OLED library problem

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Adafruit_SSD1306 and Wire serial communication

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