Assemble ESP32 IoT Prototype
Budget: $30 – $250 USD
I have an ESP32-based concept that will live as an IoT device dedicated to collecting audio and pushing it to the cloud in real time. All of the core components have been chosen, but I need a skilled pair of hands to turn the parts list into a working bench-top prototype, prove that the audio path is clean, and demonstrate reliable data transmission over Wi-Fi (Bluetooth as a bonus).
Here is what I need from you:
• Hardware build – solder or secure an ESP32 module, MEMS or electret microphone front-end (I²S preferred), power regulation, and any passive components on perf-board or a quick-turn PCB.
• Basic firmware – a test sketch that captures audio, packets it (e.g., WAV or raw PCM chunks), and streams or uploads it to a simple endpoint so I can verify the data.
• Documentation – clear schematic, BOM with part numbers, and short steps for flashing and testing so I can reproduce the build.
• Proof video or live call showing the device capturing sound (tap test is fine) and data appearing on the receiver side.
Acceptance criteria
1. Audio is intelligible when received at 16 kHz or higher.
2. Continuous streaming for at least 10 minutes without resets or buffer overruns.
3. All files and diagrams compile or open without errors in Arduino IDE or PlatformIO.
If you have experience with ESP32, I²S microphones, or low-latency audio streaming, this should be a quick, satisfying project. Let me know how soon you can ship the first assembled board and any questions you have about the parts I’ve already sourced.
Here is what I need from you:
• Hardware build – solder or secure an ESP32 module, MEMS or electret microphone front-end (I²S preferred), power regulation, and any passive components on perf-board or a quick-turn PCB.
• Basic firmware – a test sketch that captures audio, packets it (e.g., WAV or raw PCM chunks), and streams or uploads it to a simple endpoint so I can verify the data.
• Documentation – clear schematic, BOM with part numbers, and short steps for flashing and testing so I can reproduce the build.
• Proof video or live call showing the device capturing sound (tap test is fine) and data appearing on the receiver side.
Acceptance criteria
1. Audio is intelligible when received at 16 kHz or higher.
2. Continuous streaming for at least 10 minutes without resets or buffer overruns.
3. All files and diagrams compile or open without errors in Arduino IDE or PlatformIO.
If you have experience with ESP32, I²S microphones, or low-latency audio streaming, this should be a quick, satisfying project. Let me know how soon you can ship the first assembled board and any questions you have about the parts I’ve already sourced.