oled screen whit i2c how do i activate it scl=Pin(17), sda=Pin(16))

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phil99 Guru Joined: 11/02/2018 Location: Australia Posts: 3150	Posted: 07:54am 08 Jun 2025       The first step is to find out what controller chip it has. In the manual there is a chapter on display panels. After SPI displays are the I2C displays. See if your chip is listed there. The only OLED I can see is this:-   Quote   To setup the system I2C bus use the command: OPTION SYSTEM I2C sdapin, sclpin OPTION LCDPANEL SSD1306I2C, OR [,offset] Initialises a OLED display using the SSD1306 controller with an I2C interface. This supports 128 * 64 resolution. An additional parameter offset may be specified to control the position of the display. 0.96" displays typically need a value of 0. 1.3" displays typically need a value of 2. Default if omitted is 0. NB many cheap I2C versions of SSD1306 displays do not implement I2C properly due to a wiring error. This seems to be particularly the case with 1.3" variants OPTION LCDPANEL SSD1306I2C32, OR Initialises a OLED display using the SSD1306 controller with an I2C interface. This supports 128 * 32 resolution