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Was that sufficient information or do I need to disassemble one of the units?

It's a monochrome 128x64 I2C display that can use the U8glib V2 library, though I'm not sure exactly which display it is. Working code example follows...

We've got a few Heltec ESP32, "WiFi Kit 32 (v2)". It's an ESP32 and works to run firmware v46 but it also has an OLED screen on it and that does not c...