somebox / ESP32InternetRadio

This program shows how to use the ESP32-audioI2S library to build an internet radio

ESP32InternetRadio

This program shows how to use the ESP32-audioI2S library to build a internet radio. It is an adaptation of the example program Simple_WiFi_Radio. I used a MAX98357A DAC/Amplifier in mono configuration. In contrast to the internet radio with the ESP8266, the serial interface is available for inputs and outputs with the ESP32. Therefore I designed the user interface as a simple CLI menu.

It allows the

• selection of 24 radio stations (easy to expand)
• text-to-speech output with 3 examples in the languages
  • English, German, Italian
• volume control up and down
• switching on and off of the loudspeaker
• display of the currently played radio station
• redisplaying the menu

Operation with external Max98357

Wiring                            .-----------------. 
              GPIO_NUM_25 -->     o LRC             |  
              GPIO_NUM_26 -->     o BCLK       MAX  |
              GPIO_NUM_27 -->     o DIN       98357 |
                                  o Gain            |   Spkr
                                  o SD              |    _/|
                      GND -->     o GND             o---|  |
                      5V  -->     o Vin (5V)        o---|_ |
                                  `-----------------´     \|

👉 With exactly the same wiring you can also connect a UDA1334A I2S DAC with stereo output for headphones

To run update the WiFi credentials and compile