Make the following connections: Edge OLED Expander Display any G CS V2(3.3) Vcc PIN-8 * RES PIN-13 SCL PIN-15 SDA PIN-16 DC G - Ground V2 - 3.3V P13 - Clock (SCK or SCL) P14 - MISO (not used) P15 - MOSI P16 - not used On the Keyestudio Edge Expander, for example, the SPI pins are labeled: The micro:bit uses pins 13, 14, and 15 for the SPI bus. They also need to be of the correct type (male/female) to provide connectivity between the devices.
You need to obtain FOUR jumper cables of suitable size to reach from the Edge Expander board to the pins on the Display. NOTE: Here, PIN-8 is used as the RESET pin, but any available micro:bit pin can be used instead by changing the reset pin parameter in OLED display initialization command. If you've modified your display to use I2C, make the following connections: Edge OLED Expander Display not used CS not used DC PIN-8 * RES PIN-20 SDA PIN-19 SCL V2 Vcc G GND (*) While I2C itself uses only 4 wires, displays with 7-pin connectors require an additional connection to the RESET pin of the display to perform a hardware reset of the display. That process is described in the display hardware documentation.
They can optionally be controlled using I2C instead by making some a hardware modifications (moving a surface-mount resistor). CS - Chip Select DC - Data/Command RES - Reset SDA - Data SCL - Clock Vcc - 3.3V GND - Groundĭisplays that come with this type of connector are configured to operate in SPI mode by default.
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