pinout ESP32-WROVERs ILS board (2x17 pins) GPIO#
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                      3v3            GND
            (NC)       EN           X 23 ILI SDI+T_DIN-SPI MOSI
                       VP           X 22 ILI CS-SPI CS
                       VN             TX (NC)
        Key USER2      34 X           RX (NC)
        Key USER1      35 X         X 21 ILI DC 
        JOY2 Fire      32 X         X 19 ILI SDO+T_DO-SPI MISO
             (NC)      33           X 18 ILI SCK+T_CLK-SPI SCK
       AUDIO DAC1      25 O         O 05 I2C SCL
             (NC)      26           O 04 I2C SDA
     JOY2 AnalogX      27 X           00 (NC)
   SD SCK-SPI CLK      14 X         X 02 JOY2 AnalogY
 SD MISO-SPI MISO      12 X         X 15 SD CS-SPI CS
 SD MOSI-SPI MISO      13 X           GND 
                      GND             5v
                      BAT             Vin
                      GND   IUSBI     3V3


(X) mandatory pins to connect for the minimum set-up
(O) optional connections for audio and I2C keyboard support

The keys (all) are using internal pullup so just connect the other side to the GND
I2C SDA,SCL, USER1 and USER2 requires external pullup (2.7k)
The Analog joypad also needs VCC and GND connections !
The Display part of the ILI: SDI,SDO,SCK,CS but also DC,VCC and GND must be connected
The i2ckeyboard : I2C SCL, I2C SDA, VCC and GND

Everything is powered over the USB connector of the ESP32!