esp32-s3-devkitc-1

ESP32-S3-DevKitC-1 Assembly

Note on the OV2640 Camera Module

This build uses the STM32-compatible OV2640 red module (common on AliExpress). Unlike other OV2640 modules, this one has an onboard 24 MHz oscillator, so the XCLK pin is not connected. The pixel clock output on this module is labelled DCLK (not PCLK), connect it to GPIO 21.

Power Pins

Function	Pin Number (On ESP32-S3)
VCC (Display, Camera)	3.3V
GND (Display, Camera, Buttons)	GND

Display Pins (ST7789 1.14" SPI)

Function Pin (On Display)	Pin Number (On ESP32-S3)
SDA (MOSI)	11
SCL (CLK)	12
CS	10
DC	13
RES (RST)	14
BL (Backlight)	15

Camera Pins (OV2640)

Function Pin (On Camera)	Pin Number (On ESP32-S3)
D0	4
D1	5
D2	6
D3	7
D4	8
D5	9
D6	16
D7	17
XCLK	Not Connected (onboard oscillator)
DCLK (PCLK)	21
VSYNC	38
HREF	39
SDA (SCCB)	40
SCL (SCCB)	41
PWDN	GND (tie directly)
RESET	3.3V (tie directly)

Button Pins

Wire each button with one leg to the Pin Number (On ESP32-S3) and the other to GND. Internal pull-ups are enabled, no external resistors needed.

Button	Pin Number (On ESP32-S3)	Function
LEFT	1	Navigate left / back
SELECT	2	Confirm / select
RIGHT	42	Navigate right