Wiring Diagrams

Wiring Diagrams

KryonOS requires an ILI9341 2.8 Inch Touch display with and an SD card module. To achieve the best performance and avoid bus collisions, KryonOS uses split SPI buses.

• VSPI: Used exclusively for the TFT Display and Touch controller.
• HSPI: Used exclusively for the SD Card Module.

Note

ESP32 Marauder Compatibility Out-of-the-box, the display and touch pinouts in KryonOS perfectly match the ESP32 Marauder (v4, v6, and v6.1) hardware!

Default Pin Configuration

ILI9341 2.8 Inch Touch Display Pins	ILI9341 Display Pin Labels	ESP32 Pin
1	VCC	3.3V
2	GND	GND
3	CS	D17 (TXD 2)
4	RESET	D5
5	DC	D16 (RXD 2)
6	SDI (MOSI)	D23
7	SCK	D18
8	LED	D32
9	SDO (MISO)	D19
10	T_CLK	D18
11	T_CS	D21
12	T_DIN	D23
13	T_DO	D19
14	T_IRQ	X (Not Connected)

SD Card Module (HSPI)

SD Card Module	ESP32 Pin	Notes
MOSI	GPIO 13	SD SPI MOSI
MISO	GPIO 26	SD SPI MISO
SCK / CLK	GPIO 14	SD SPI Clock
CS	GPIO 15	SD Card Chip Select

Changing Pins

If your specific hardware setup uses different pins, you will need to recompile the OS:

1. To change Display/Touch pins: Open platformio.ini and modify the build_flags (e.g., -D TFT_MOSI=23).
2. To change SD Card pins: Open src/FileSystem/FileSystem.cpp and modify the sdSPI.begin() and SD.begin() lines.