ESP32 WROOM 32D - Develop a Proof of Concept prototype -Firmware development

You can realize the protoype using a breadboard with a ESP32 WROOM 32D. The prototype will:

Part A

Bluetooth communication:

1. when GPIO A at the ESP32-WROOM is triggered with a 1, wake up from deep sleep mode and enable Blueooth. Otherwise, turn off alll wireless functions in order to save power

2. pair with a Bluetooth device (Windows PC /Mac/iPhone/Andorid phone)

3. download music files in Ogg format from the Bluetooth device and save the files to a SD card. The SD card is connected to ESP32-WROOM

4. a user can manage the music files using the Bluetooth device

5. unpair the Bluetooth device and turn off alll wireless functions in order to save power.

Part B

Select Ogg music files to play:

1. When GPIO B at the ESP32-WROOM is triggered with a 1, wake up from deep sleep mode and read values from GPIO C, D, E.

2. Based on the values of GPIO C, D, E, F (16 combinations here), selecte one of the 16 Ogg music files to play.

3. Using I2S to send the music data to another chip to play (Adafruit I2S 3W Class D Amplifier Breakout - MAX98357A).

4. After the Ogg music files is finished, enter deep sleep mode again.

You will make two videos for part A and part B to show everything is working. If you do not have the parts, we can buy and ship them to you but this make take a long time and we may need to pay duties.


10% for a full schematic

25% for video of Part A

25% for video of Part B

20% for providing all the files

20% after we test the files successfully.


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Compétences : Electronique, Logiciels Embarqués

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( 20 commentaires ) Hong Kong, Hong Kong

Nº du projet : #17552478

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Hello. My name is Vusi and I'm an Electronic Engineer, you can learn more about me from my website at [login to view URL]

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9 freelance font une offre moyenne de $3148 pour ce travail


Hello, I am interesting in your project. I have a good expirience in ESP32, electronics and sound plaing using microcontorllers. Best regards, Vyacheslav.

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hello. i am electrical engineering expert and i have good experience in this field i will do my best and you will get good result thank you very much

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Dear Sir, I am professional embedded system developer. I have expertise in designing miniature circuits for Bluetooth applications. I have full set of Bluetooth demo kits. Therefore, I can provide full functioning c Plus

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Hello, i have read the details provided..please contact me to discuss more on the project deadline and some other few things

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I am electronic engineer who in electronic product design and development more than 3 years. originally my company is in Sri lanka, I am living in Japan these days , so I would able find component myself , it is r Plus

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Dear, I have checked your project description. I have many experiences on Schematic and PCB designing with ESP32, microcontrollers and single board computer. If you need to test on designed board, I will do it in a sho Plus

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I have rich many experiences about esp32 and have just done like that project. I have also various development boards such as arduino , nucleo , raspberry pi , etc. I can finish this project well. I am all ready fo Plus

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