What is it?

A audio development board for an ESP 32 NODE MCU. With this board you can get a decent analog audiosignal out of the ESP 32.
Only Plug this Audio Development Board on an ESP 32 NODE MCU (e.g. ESP 32 DEVKIT V1 DOIT), flash it with this Code and you get a good sounding Bluetooth audio receiver.
You can also write your own Code for an bluetooth audio receiver, an internetradio or something else where you need a analog audio out.

Why did you make it/What makes it special?

May you know the sound of the cheap bluetooth audio boards from china. They have a loud noise floor, a bad audio quality and an annoying sound if you connect your phone, change the volume or do other activities.
With this audio development board you have no annoying sounds and you can add your own features in the code. You can build the Audio Receiver you ever want. The combination with low ESR and high frequency capacitors provides no switching noise from ESP32 and the Power Supply.

Features:

-Burr-Brown DAC Chip
-Sampling frequency up to 384kHz
-Resolution up to 32 Bit
-Low noise Power Supply with low ESR Capacitors
-Two tactile switches
-6 pin header with GPIOs and ground

What you get:

A fully soldered and assembled audio development board for the ESP32 Node MCU (e.g. ESP 32 DEVKIT V1 DOIT).
You can also get the audio development board with an compatible ESP32 Node MCU.

How to start:

If you chosse the audio development board with the pre programmed ESP32 Node MCU:
- Plug in the USB micro power supply cable in the micro USB port of the ESP32 Node MCU
- Plug in a headphone or active speaker in the 3.5mm Stereo connector
- Connect your bluetooth audio Source to the ESP32
- Play music and enjoy

If you chosse only the audio development board:
- Buy a ESP 32 DEVKIT V1 DOIT compatible board - Install the ESP IDF development framework
- Programm it with this Code
- Plug in the USB micro power supply cable in the micro USB port of the ESP32 Node MCU
- Plug in a headphone or active speaker in the 3.5mm stereo connector
- Connect your bluetooth audio source to the ESP32
- Play music and enjoy

Click here for more information.