E-Speaker Using ESP32

The E-Speaker is a smart, portable, and versatile audio system built using the ESP32 microcontroller. Leveraging the ESP32’s Wi-Fi and Bluetooth capabilities, this project creates an affordable and efficient smart speaker capable of streaming music, playing audio files, and providing basic voice assistant functionalities.

For Full Project:

https://electronicsworkshops.com/2024/12/05/e-speaker-using-esp32/

1. Wireless audio streaming via Bluetooth and Wi-Fi
2. Support for multiple audio formats (MP3, WAV, etc.)
3. Integration with online music services (e.g., Spotify, internet radio)
4. Compact and portable design
5. Voice command support using a microphone
6. Control via a smartphone app or web interface

PCBWAY is a highly skilled company specializing in PCB manufacturing. They offer their services at incredibly low prices, such as providing 10 PCBs for only $5. Additionally, new members receive a $5 bonus. The website allows customers to upload their Gerber Files and place orders.

ORDER LINK

PCBWAY is known for producing PCBs of exceptional quality and maintaining high standards, which is why many people trust them for their PCB and PCBA needs.

Below are some of my PCB’S manufactured by PCBWAY and I am fully satisfied by their Quality of service they provide.

This is the most important part of this project. To play audio sounds on the ESP32 board, we need audio files in .wav format because ESP32 can play an audio file in .wav format only.

First of all we must be make the audio file ready that we want to play in our speaker. You can also record your own audio file in this case.

After that, download and install the Audacity Audio Editor App. This app will be used to change the file type, Sample Rate, and other properties.

Audacity

Once the installation is complete, open the Audacity app and then go to file > Open and select the audio file to edit.

Audacity

The first thing that needed to be changed is the sampling rate. For playing an audio file on ESP32, a sampling rate of 8000 to 16000 will be good as ESP32 doesn’t have much memory. So change the Project Rate to 16000.

Audacity

After that, navigate to File > Export > Export as WAV to save the audio file in .wav format.

Audacity

Now in the next window, select WAV  as file type and Unsigned 8-bit PCM as an Encoding format and then click on Save.

Audacity

Now we need a Hex Editor app to generate Hex codes for the audio file. So download and install the Hex Editor (HxD) from the given link. We can also use any hex editor as per the comfort. I have used editor in my case. After that, open the app, then go to File > open and open the .wav file. This will generate the Hex code for the .wav file.

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I have already uploaded all these required manufacturing files in PCBWAY website. You can easily go to the below link and place you order, and get your Own Home Automation PCB manufactured from one of the best pcb manufacturer PCBWAY

order now……..

For Full Project:

https://electronicsworkshops.com/2024/12/05/e-speaker-using-esp32/

Conclusion

The E-Speaker using ESP32 is a cost-effective and feature-rich project that combines the power of modern microcontrollers with smart audio functionality. It is ideal for DIY enthusiasts looking to explore IoT and audio electronics. With its scalability and flexibility, the project opens the door to numerous enhancements and integrations.