ESP32 TWS Earbuds Firmware Development -- 2

@SMBelectronics

Hello, I read the project discription, and I found this project within my competence and can deliver exellent results I’m Abbas Jawadwala, Co-founder and Lead Engineer at SMB ElectroTech. With 5+ years in electronics design and hardware development, I’ve supported clients globally with everything from IoT devices to multi-layer PCB layouts. My team and I focus on reliable, manufacturable solutions delivered on time with full transparency. Here’s how we can help: 1. PCB Layouts – multi-layer, signal integrity, DFM checks 2. Embedded Systems – firmware for AVR, ARM, ESP, Arduino 3. Product Development – prototyping, testing, optimization 4. Power Electronics – converters, power supplies, efficiency tuning 5. Analog/Digital Circuits – grounding, shielding, EMC/thermal analysis What sets us apart is our client-first approach and attention to detail. I usually take on one project at a time, ensuring focus and quality at every stage. I’d be glad to learn about your goals—whether it’s performance, cost, or schedule. I’m available to start right away and can jump on a call this week to plan the next steps. Looking forward to connecting. Best regards, Abbas Jawadwala SMB ElectroTech

@Zainrais0786

Are you looking for someone who can develop firmware for an ESP32 module to connect with TWS earbuds and work as a Hands-Free Profile (HFP) device. . I’ve got your back. Hi, I am Zain. I can easily handle the task including • Embedded Systems • Firmware Development • C / C++ / Embedded Linux • ESP IDF / Arduino IDE / Platform io • Circuit Design • PCB Design • MATLAB • Simulations etc. Lets chat. Best regards

@AliHassan1903

Hi There, I am a professional Embedded Systems Engineer with proven expertise in ESP32 firmware development, Bluetooth profiles, and wireless audio integration. I have successfully completed the exact project you described, where I connected an A7672S module with TWS earbuds and implemented the Hands-Free Profile (HFP) for seamless call management. Key Achievements: • Two-Way Audio Processing: A7672S audio routed to TWS earbuds and TWS microphone audio transmitted back to A7672S • HFP Implementation: Stable call handling (answer, hang up, transfer) with auto-answer functionality • Optimized Performance: Clear, low-latency audio and reliable connectivity between ESP32, A7672S, and TWS earbuds With a strong background in Bluetooth HFP, ESP32, A7672S, and audio streaming, I ensure robust and production-ready firmware tailored to your application. I also provide well-structured documentation and post-delivery support for seamless integration. I would be glad to discuss your requirements further and deliver a solution that meets your exact needs.

@KolaPeters

Hello, I have strong experience developing firmware for ESP32 modules with Bluetooth HFP integration and have worked on A7672S-based projects involving audio routing and call handling. I can implement the full chain: ESP32 ↔ TWS earbuds, seamless HFP call flow, audio pass-through (A7672S ↔ TWS mic/speaker), and auto-answer functionality. With proven skills in Bluetooth profiles, audio processing, and embedded C/C++ for ESP-IDF/Arduino, I can deliver reliable, production-ready firmware tailored to your requirements. Looking forward to discussing details. Best regards,

@zeel1410

I can assist you with firmware development for your ESP32-based solution integrating with the A7672S module and TWS earbuds. I have hands-on experience working with ESP32 Bluetooth stack (Classic & BLE), SIMCom/Ai-Thinker modules (A7672S, A7670, etc.), and implementing Hands-Free Profile (HFP) for seamless call management. Key points I can deliver: ESP32 firmware to act as an HFP device and connect with TWS earbuds. Audio routing: A7672S audio stream → TWS earbuds, and TWS mic input → A7672S for uplink. Implement Auto-Answer and call control features (pickup, hang-up, reject). Optimize audio buffering, echo cancellation, and latency handling for clear call quality. Testing and debugging on real hardware (ESP32 + A7672S + TWS). I’d be happy to discuss the project details further and share examples of my previous ESP32 + GSM module + Bluetooth integration work.

@ayushk0208

Embedded firmware developer with 1+ year of experience in UI and communication (UART, SPI, I2C). Skilled in STM32, ESP32, and OpenWRT — including Linux build systems, custom packages, and user/kernel-level handling.