> For the complete documentation index, see [llms.txt](https://makermoekoe.gitbook.io/picoclick-c3/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://makermoekoe.gitbook.io/picoclick-c3/extension-boards/oled-0.69.md).

# OLED 0.69"

The OLED 0.69" extension board is based on the **SSD1306 0.69" 14pin OLED** display with 96x16 pixels. The display uses I2C to communicate with the Picoclick (SDA = GPIO2, SCL = GPIO8). It uses the 3.3V power supply of the Picoclick and thus is only active when the Picoclick is activated.

The extension connector is underneath the display.

## Hardware

### Overview

<figure><img src="https://3814073947-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F8e8Y0oYz6ujS2c1GD1Qy%2Fuploads%2FA2BWnX0h8bHpoGt08pqp%2Fpc3_ext_oled_069.png?alt=media&amp;token=15ece950-1cd4-4bd6-a5ec-6c96e6e96629" alt=""><figcaption></figcaption></figure>

3D model of the OLED display missing but the silkscreen on the PCB shows the border of it.

### Technical drawing

<figure><img src="https://3814073947-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F8e8Y0oYz6ujS2c1GD1Qy%2Fuploads%2F9tAcgU2nmH0Q5B7aPjCO%2Fpc3_ext_oled069_techdraw.png?alt=media&amp;token=70edf993-d738-4d7e-9ac7-e2b606bad713" alt=""><figcaption></figcaption></figure>

* PCB: 29mm x 10mm
* Thickness: 1mm
* Corner radius: 2mm

### Schematics

<figure><img src="https://3814073947-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F8e8Y0oYz6ujS2c1GD1Qy%2Fuploads%2FYMzpOBkMzPxlatmlEc5J%2Fpc3_ext_mini_oled_069_schematics.png?alt=media&amp;token=82b57bb7-9a30-45d3-9e2b-9bb49c291b24" alt=""><figcaption></figcaption></figure>

## Software

Coming soon.