seedsigner-micropython

Components

• ESP32-S2 Saola-1R dev board
• Waveshare 1.3inch LCD hat
• Waveshare OV2640 camera board
• 2x20-pin "cobbler" to breadboard the LCD hat's Raspberry Pi gpio connector

ESP32-S2 Saola-1R wiring

Note that the Waveshare display hat should have the joystick on the left side. The corners of the GPIO connector are:

GND 26 19                                   SCL SDA 3V3
(joystick on left)      (screen)        (three buttons)
 21 20 16                                   GND  5V  5V

(the Adafruit cobbler should be oriented upside down, relative to the LCD hat)

ST7789 display (via Waveshare hat):

ST7789      RASPI GPIO      SAOLA
---------------------------------
3.3V        3V3
GND         GND
SCLK        11/SCLK         12 (FSPI_CLK)
MOSI        10/MOSI         11 (FSPI_MOSI)
CS          8/CE0           10 (FSPI_CS)
DC          25               1
RST         27               2
BL          24              (not connected)

Waveshare hat joystick/button inputs:

BUTTON          RASPI GPIO      SAOLA
-------------------------------------
joystick up      6              13
joystick down   19              14
joystick left    5              15
joystick right  26              16
joystick press  13              17
key 1           21               3
key 2           20              34
key 3           16              33

OV2640 camera

note: the camera module lists D2 through D9 but the camera driver expects d0 through d7. Map D2 as d0, D3 as d1, ..., D9 as d7.

OV2640      SAOLA
-----------------
3.3V
GND
SIOC         9 (SCL)
SIOD         8 (SDA)
VSYNC        7
HREF         6
PCLK         5
XCLK         4
D9          42
D8          41
D7          40
D6          39
D5          38
D4          37
D3          36
D2          35
RET         (not connected)
PWDN        (not connected)