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Updated Displays (markdown)

Konrad Roeder 2022-08-13 19:08:08 +00:00
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Displays.md

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If your board does not come with a display, you will need to obtain an SSD1306 display separately. The SSD1306 OLED displays are made in two different pin oderings. The preferred OLED displays have the following pin order: VCC-GND-SCL-SDA. They can be soldered into TTGO T-Beams directly. The OLED displays with the GND-VCC-SCL-SDA pin order need to be soldered in such a way that display does not get reverse-polarity on the power terminals.
# SSD1306 OLED with VCC-GND-SCL-SDA pin order (preferred)
This is the SSD1306 display that matches the TTGO T-Beam boards:
![SSD1306 VCC-GND-SCL-SDA OLED](https://user-images.githubusercontent.com/3480859/184472377-ec0e1f14-72da-4e5c-957b-54164bec3400.jpg)
When the display has the proper pin order, the pins line up like this:
![SSD1306 VCC-GND-SCL-SDA OLED side view](https://user-images.githubusercontent.com/3480859/184507418-f6d14463-e922-42a2-bf9e-162d4d307d62.jpg)
# SSD1306 OLED with GND-VCC-SCL-SDA pin order
This SSD1306 display has the wrong pin order for the TTGO T-Beam boards:
![SSD1306-GND-VCC-SCL_SDA](https://user-images.githubusercontent.com/3480859/184472625-491d9220-3dba-4038-913b-c26356184e4b.PNG)
In order to use this OLED display, solder the OLED board onto the main board this way: