Larger OLED Display
Written by Manuel Lausmann, DO3MLA Translated into English by Konrad Roeder, WA4OSH
Often there's the question whether you could connect a larger OLED display to the Lora APRS Igate and Tracker. The answer is unequivocally YES. It is important to pay attention to the resolution of 128x64 when you buy the display. There's three minor changes necessary to configure the display to work in I2C mode. The board comes from the manufacturer configured for a SPI connection (see pictures below).
Photo Manuel Lausmann, DO3MLA
Photo Manuel Lausmann, DO3MLA
Photo Manuel Lausmann, DO3MLA
Photo Manuel Lausmann, DO3MLA
Short or zero ohm resistor at R5 und R3 Remove R4
The following is an example of a working 2.42 OLED. However, these OLEDs on Amazon are very expensive, so you consider sourcing the from one of the many China vendors. For the same money, you can usually get two.
Photo Manuel Lausmann, DO3MLA und TTGO Product literature
Photo Klaus-Heinz Hirshelmann, DJ7OO
This connection scheme works for both TTGO Lora 32 V2, (Heltec note GPIO 4, 15) and the TTGO T Beam V1
Photo TTGO Product literature
