Working with the joystick sensor module

Connecting an analog joystick to the ESP32 is easy. You can just connect this device to the analog pins. The ESP32 has two ADC1 and ADC2 pins, with some channels. You can find the analog pins with their channels on the ESP32 in figure 3-5:

Figure 3-5: ADC pinout on ESP32

Some ADC2 pins are used for internal devices such as Wi-Fi. For the ESP-WROVER-KIT board, GPIO 0, 2, 4, and 15 cannot be used for ADC due to external connections for different purposes.

Wiring

In this section, we'll perform hardware wiring between the ESP32 and analog joystick. For demo purposes, I will use the ESP-WROVER-KIT v4.1 board. We can connect our analog joystick with the ESP32 on the following wiring...