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There are a variety of boards labeled as ESP32-2432S028R. They are not all created equally.

Pinouts

  PINS   FUNCTIONS		    - DESIGNATION  
     0   Boot Button
     1   Connector P1               - TX
     2   Display                    - TFT_RS / TFT_DC
     3   Connector P1               - RX
     4   RGB LED                    - Red
     5   SD Card                    - SS [VSPI]
     6   Unpopulated Pad U4: pad 6  - SCK / CLK
     7   Unpopulated Pad U4: pad 2  - SDO / SD0
     8   Unpopulated Pad U4: pad 5  - SDI / SD1
     9   Unpopulated Pad U4: pad 7  - SHD / SD2
    10   Unpopulated Pad U4: pad 3  - SWP / SD3
    11   Unpopulated Pad U4: pad 1  - SCS / CMD
    12   Display                    - TFT_SDO / TFT_MISO [HSPI]
    13   Display                    - TFT_SDI / TFT_MOSI [HSPI]
    14   Display                    - TFT_SCK [HSPI]
    15   Display                    - TFT_CS [HSPI]
    16   RGB LED                    - Green
    17   RGB LED                    - Blue
    18   SD Card                    - SCK [VSPI]
    19   SD Card                    - MISO [VSPI]
    21   Display & Connector P3     - TFT_BL (BackLight) / I2C SDA
    22   Connector P3 & CN1         - I2C SCL
    23   SD Card                    - MOSI [VSPI]
    25   Touch XPT2046              - CLK [Software SPI]
    26   Speaker                    - !!!Speaker ONLY! Connected to Amp!!!
    27   Connector CN1              - Can be used as a capacitive touch sensor pin.
    32   Touch XPT2046              - MOSI [Software SPI]
    33   Touch XPT2046              - CS [Software SPI]
    34   LDR Light Sensor           - !!!Input ONLY!!!
    35   P3 Connector               - !!!Input ONLY w/ NO pull-ups!!!
    36   Touch XPT2046              - IRQ !!!Input ONLY!!!
    39   Touch XPT2046              - MISO !!!Input ONLY!!! [Software SPI]