ESP32 web radio /audio BT receiver /w class-D amp
=================================================

Designed by Microwavemont.

https://www.tindie.com/products/microwavemont/esp32-web-radio-audio-bt-receiver-w-class-d-amp/


Product Description
===================

ESP32 Audio developing board, will work as web radio or Bluetooth amplifier.


Notes for REV2
--------------

• Newly very high efficiency 3.3V regulator (ROHM BP5293-33) is backside mounted
  (no heat production anymore)

• Acrylic top cover is attached as "service parts" (it is hand drilled and hand
  cut. Please accept several imperfectness or trash it and make wonderful one by
  yourself)...
  
• Other information including schematics are same. Initial firmware for shipping
  is "bluetooth speaker mode". Please see the information below...

Most up-to-date code is available at n24Bass's GitHub account, please use it for
testing: https://github.com/n24bass/ESP32_MP3_Decoder/tree/OLED_WEB


What is it?
-----------

ESP32 (ESP-WROOM-32 module) with I2S DAC (TI PCM5102A) and class-D amplifier
(TI TPA3110).


Why did you make it?
--------------------

Because, I did want to enjoy listening web radio by all-in-one board.


What makes it special?
----------------------

By great feature of ESP32, this board can work as standalone.

• Wi-Fi Web radio, receiving station preconfigured in source. URL switch by
  on-board tact SW (GPIO_16)

• Bluetooth amplifier

Source code is available on GitHub:
https://github.com/kodera2t/ESP32_OLED_webradio


This kit includes
-----------------

• Fully-tested (completed) main board

• 100-240AC/DC 9V adapter

All you will need to prepare is, 4-16 Ohms two passive speakers and Wi-Fi
environment (for web radio) or Bluetooth capable equipment (iPhone, Android,
etc.)

Note: The acrylic plate in the picture is NOT included (REV1)


Note for this item
------------------

For programming ESP32, we need to prepare esp-idf environment. As a default
firmware, bluetooth speaker mode is uploaded to ESP32. Please re-write firmware
for the web radio operation. If you just want to enjoy web radio and jump into
web radio mode, please let me know your WiFi SSID/password in "Additional
Instructions" in the order form. (WiFi connection requires SSID and password,
as you would know..) I would upload firmware with your WiFi setting before
shipment. (WEP/WPA both works well..) In the default firmware, OLED display will
turn off after 5-seconds after power-on in order to avoid OLED noise problem.


Now add/remove preset URL is enabled through web browser!
---------------------------------------------------------

By the great contribution by n24bass, preset URLs can be added/removed from
your web browser by the code in GitHub:
https://github.com/kodera2t/ESP32_OLED_webradio

Please access your web radio's IP address by web browser and add and remove
station preset as you wish. Assuming your web radio assigned 192.168.1.10 and
the case for adding one station.

http://192.168.1.10/0+http://beatles.purestream.net/party.mp3

will add one new preset. the number "0" should be add up to 9. More details can
be found in Github's readme: https://github.com/kodera2t/ESP32_OLED_webradio