3.5' DLC32 MAX LCD (MKS ESP-TFT35)

ESP3D-X support

Board folder	boards/dlc32_max_lcd
CMake option	DLC32_MAX_LCD
Status	✅ Supported
Factory app	— No SD card slot on this board, so no Factory recovery app.
Inputs	Touch only: the pendant buttons, encoder and switch are emulated on screen

Build variants

Variant	Flash	CNC connection	Target firmware
8mb_bt_ble_fluidnc	8 MB	Bluetooth BLE	FluidNC
8mb_bt_ble_grblhal	8 MB	Bluetooth BLE	grblHAL
8mb_bt_fluidnc	8 MB	Bluetooth (Serial + BLE)	FluidNC
8mb_bt_grblhal	8 MB	Bluetooth (Serial + BLE)	grblHAL
8mb_bt_serial_fluidnc	8 MB	Bluetooth Serial	FluidNC
8mb_bt_serial_grblhal	8 MB	Bluetooth Serial	grblHAL
8mb_serial_fluidnc	8 MB	Serial	FluidNC
8mb_serial_grbl	8 MB	Serial	grbl
8mb_serial_grblhal	8 MB	Serial	grblHAL
8mb_serial_marlin	8 MB	Serial	Marlin
8mb_wifi_fluidnc	8 MB	WiFi (TCP socket to the CNC)	FluidNC
8mb_wifi_grblhal	8 MB	WiFi (TCP socket to the CNC)	grblHAL

See Installation to build and flash a variant.

Hardware

• MKS ESP-TFT35 V4.1 board with a TS35 3.5’ panel, used as a DLC32 MAX pendant
• ESP32-WROOM-32U-N8: 8MB flash, no PSRAM
• 3.5-inch 320x480 TFT display - ST7796 (SPI, 20 MHz)
• Capacitive touch panel - FT6336U (I2C) - the XPT2046 resistive controller is not mounted
• Backlight with PWM dimming (active low)
• No Micro-SD card slot
• CNC link: UART2 on the RJ11 connector (UART0 is used for logs only)

Pins

Pin	Usage
GPIO 0	TOUCH_SDA
GPIO 4	TOUCH_SCL
GPIO 5	TFT_BL (active low, PWM)
GPIO 14	TOUCH_RST
GPIO 16	UART2_RX (CNC)
GPIO 17	UART2_TX (CNC)
GPIO 18	TFT_CLK
GPIO 19	TFT_MISO
GPIO 21	TOUCH_IRQ
GPIO 23	TFT_MOSI
GPIO 25	TFT_CS
GPIO 27	TFT_RST
GPIO 33	TFT_DC
GPIO 35	BUTTON