It also has all of the I/O you would expect something based on an ESP32 to have, such as I2S stereo DAC, an I2S microphone input, I2C GPIO extenders and, of course, a built-in MicroSD card reader.

外设：ESP32 集成了多种外设，如 GPIO、ADC、DAC、SPI、I2C、I2S、UART、SDIO、CAN、以太网 MAC、PWM、LED PWM、电机 PWM、触摸传感器等。 RF 模块：ESP32 内置了 ...

Using hardware I2C on an ESP32? Do you need to connect multiple I2C devices with the same address? Normally, you wouldn’t be able to do that without extra parts, but on the ESP32, [BastelBaus] h ...