• Are TTGO LoRa32 V2.1-1.6 and TTGO LoRa32 V2.1-1.6.1 are fully pin-compatible? What exactly is the difference?

I want to use it as a single channel gateway -> https://github.com/things4u/ESP-1ch-Gateway
Would this be the right config: (meaning right pin mapping):

struct pins {
	uint8_t dio0=26;		// GPIO26 / Dio0 used for one frequency and one SF
	uint8_t dio1=33;		// GPIO33 / Used for CAD, may or not be shared with DIO0
	uint8_t dio2=32;		// GPIO32 / Used for frequency hopping, don't care
	uint8_t ss=18;			// GPIO18 / CS. Select pin connected to GPIO18
	uint8_t rst=23;			// GPIO14 / D3. Reset pin not used	
} pins;
#define SCK 5
#define MISO 19
#define MOSI 27
#define RST 23
#define SS 18

I also would like to use the OLED on the board, but am missing further infos:

• what OLED exactly is mounted to the board? Which protocol is it using? Which pins are connected to it?

Thank you in advance for your help.