Tìm freelancer làm prototype thiết bị AI giọng nói

@Mahmoud00Ibrahim

Hello, I can handle the complete ESP32/ESP32-S3 prototype, including hardware selection, assembly, firmware, and testing. I have hands-on experience with ESP32, I2S audio, microphones, speakers, Wi-Fi, sensors, and IoT devices, including firmware development and hardware integration. For the prototype, I’d suggest: * ESP32-S3 DevKit with PSRAM * INMP441 / similar I2S microphone * MAX98357A I2S amplifier + speaker * USB-C 5V power * Status RGB LED + push button I can test the complete audio path, Wi-Fi connectivity, controls, and external API communication, then deliver the schematic, BOM, and firmware source code

@ahmedy607

Hi, I’ve read the project details carefully, and this is the type of ESP32/IoT prototype work I can handle. I can build the first hardware prototype using an ESP32/ESP32-S3, I2S microphone, speaker, Wi-Fi, status LED, button, and USB power. I’ll also handle the basic firmware, hardware testing, and initial connection to the external server/API. I can recommend readily available components and provide the schematic, BOM, and complete source code with the prototype. Please check my portfolio for previous ESP32 projects and similar embedded hardware work. I am ready to start immediately. Best regards, Ahmed

@Santoshchaulaga

Olá, Meu nome é Santosh Chaulagain, sou Engenheiro Eletricista e Projetista de PCBs, com mais de 8 anos de experiência em sistemas embarcados, ESP32/ESP32-S3, IoT, circuitos analógicos e digitais e desenvolvimento de hardware. Analisei seu projeto e posso desenvolver o protótipo completo, desde a seleção dos componentes até os testes funcionais. Tenho experiência prática com ESP32, firmware, Wi-Fi, sensores, interfaces I2S e sistemas de áudio. Para este projeto, posso trabalhar com ESP32-S3, microfone I2S, amplificador de áudio, alto-falante, LED de status, botão e alimentação USB. Também posso desenvolver o firmware básico para testar microfone, áudio, Wi-Fi, LED e botão, além de realizar a integração inicial com seu servidor/API. Entregarei: • Protótipo montado e testado • Esquemático eletrônico • BOM completa • Firmware e código-fonte • Testes dos principais recursos • Documentação necessária para a próxima etapa do projeto Tenho experiência desenvolvendo projetos para clientes internacionais e sempre foco em soluções confiáveis, comunicação clara e entrega dentro do prazo. Estou disponível para iniciar imediatamente e discutir os componentes e requisitos técnicos. Atenciosamente, Santosh C. Engenheiro Eletricista | PCB Designer | ESP32 & IoT Specialist

@hexabitzprojects

Hi, I can develop the **ESP32/ESP32-S3 voice-device prototype** using ready-made modules/dev boards, without starting with a custom PCB. I have **16 years of hands-on embedded, IoT and electronics R&D experience**, including ESP32-based IoT products, MQTT/cloud connectivity, compact battery devices, audio interfaces and custom hardware prototypes. I can handle: * **ESP32-S3** selection and hardware architecture * I2S microphone and speaker/audio interface * Wi-Fi connectivity and external server/API communication * Status LED and push-button handling * USB power and basic power management * Firmware development and hardware bring-up * Microphone, speaker, Wi-Fi and button testing * Circuit diagram, BOM and complete source-code handover **Suggested prototype components:** ESP32-S3 development board, I2S digital microphone such as INMP441, MAX98357A I2S amplifier, suitable speaker, status LED, push button and USB 5V supply. I can build and test the complete prototype and keep the firmware/interface structured for integration with the separate AI/voice-processing developer. Best regards, Subhash Suman ESP32 | Embedded C/C++ | IoT | I2S Audio | MQTT | Hardware R&D

@obademio1

Hello, I can deliver what you need. I understand your project details. I will follow instructions and keep you updated. I am an experienced and specialized freelancer with 10+ years of practical experience in Embedded Systems, AI (Artificial Intelligence) HW/SW, Firmware Development. Feel free to visit my profile to check latest work and feedback from clients. Looking forward to working with you, connect in chat. Talk soon, Olusoji

@kainatworks

Greetings Dear Hiring Manager I can prototype your ESP32-S3 voice device with I2S audio, Wi-Fi and tested firmware 1. Which ESP32-S3 module do you prefer? 2. Which I2S microphone and speaker are planned? 3. What external API should be tested? 4. Is USB power only required for testing? 5. Can I select readily available components? Best Regards Dr Kainat

@Ariiba67

Hi, Tôi có thể hỗ trợ bạn dựng prototype ESP32-S3 với microphone I2S, loa, Wi-Fi, LED và nút bấm thành một hệ thống hoạt động ổn định. Tôi sẽ tư vấn linh kiện, lắp ráp, viết firmware cơ bản và test từng phần trước khi kết nối thử với server/API. Prototype có thể bắt đầu bằng dev board/module để tiết kiệm thời gian và chi phí, sau đó tôi sẽ bàn giao BOM, sơ đồ mạch và source code đầy đủ. Bạn gửi thêm yêu cầu về API và mục tiêu prototype, tôi có thể đề xuất linh kiện cùng timeline và chi phí cụ thể. Best Regards, Ariiba

@hakan1022

Hi, there I recently delivered a voice‑controlled ESP32‑S3 prototype for a smart speaker, integrating I2S mic, I2S‑DAC speaker, BLE, status LEDs, and a USB power rail. The board ran a lightweight ASR stub, served over MQTT, and logged diagnostics to a web UI. I am planning to select the ESP32‑S3 with a 4 mAh Li‑Po pack, an ADMP401 I2S mic, a MAX98357A I2S DAC, a 5 V 5 A USB‑C charger, a WS2812B RGB LED, and a tactile button with pull‑up. The firmware will be built on ESP-IDF, using the ESP‑ADF for audio pipelines, FreeRTOS tasks for Wi‑Fi and MQTT, and a simple state machine for LED status. I will prototype on a WROVER dev board, then solder the components to a 4‑layer perfboard for quick validation. During a similar project I faced cross‑talk between the mic and DAC, solved by adding a 10 µF bypass capacitor and a 1 kΩ series resistor on the mic line. I also tuned the Wi‑Fi TX power to ensure reliable 2.4 GHz connectivity in a confined room. The firmware includes a self‑test routine that verifies mic gain, DAC output, Wi‑Fi handshake, and button debounce before reporting ready status over the serial console. If I use my previous experience, your project will likely be completed successfully. Hope to discuss this in detail. Through detailed discussion, I think I can find the better solution to finish your project successfully. Thank you

@Wame769Swart

I see you're looking to develop a voice-controlled AI device, which is an exciting challenge. I've worked on similar hardware prototypes using ESP32, focusing on integrating audio components and IoT functionalities. The requirement for I2S audio and microphone integration is crucial to ensure seamless voice recognition. My approach would include careful component selection and thorough testing to guarantee reliability in the final product. With my experience in firmware programming and prototype assembly, I can help bring your vision to life, ensuring all components work harmoniously together. Let's talk, and if you're not satisfied, at least you get a free consultation. Regards, Wame769Swart