Bigger display?

[costo]

You can find 2.42 inch 128x64 OLED displays, they can be configured for SPI or I2C. Usually they are delivered as SPI so there must be 2 or 3 (0-ohm) resistors added/removed to make it a I2C device. The controller is a SSD1309 I think which is very much compatible to a SSD1306 controller. The module I/O has 7 pins. some must be grounded and another (RST) need a 10k resistor and a 0.1uF cap to VCC.

Redefine button_pin on tbeam 1.0

This is how my t-beam with a big red external button and a 2.42 inch oled looks compared to a regular heltec 2.1 with 0.96 inch oled. [button] Everyone can read the info easy from a distance.