Connect OLED with only necessary pins

[Samuel Mathieson]

Hello guys.

I want to connect an OLED expansion to a dock. But I want to put it through a cable. What do I need to connect it?

I imagine I need to connect TX+, TX-, RX+, RX-, 3.3 and GND? What else do I need to connect, anyone have OLED schematics or know what is needed?

Thanks!

[fader]

There was a diagram in a post earlier about this: https://community.onion.io/topic/260/pinouts-for-omega-docks-and-expansions/3

I don't know off the top of my head what each of the pins carries but it should be possible to figure that out based on the pinout diagram on the Omega.

[Kit Bishop]

@Samuel-Mathieson The OLED expansion dock uses I2C for communications from the Omega.
In the diagram referenced above by @fader the connections are:

• black = ground
• red (the upper one in the diagram) = 3.3V
• red (the lower one in the diagram) = 2.5V/2.8V
• green = GPIO Pin 20 = I2C SCL
• orange = GPIO Pin21 = I2C SDA

[Christopher Whitney]

This is exactly what I needed. I am using a generic OLED screen and it works like a charm!