Compact ESP32 Voice Assistant PCB

@SMBelectronics

Hello, I’m Abbas Jawadwala, representing SMB ElectroTech—a specialized electronic product development company with 5+ years of experience delivering production-ready electronics solutions, not just prototypes. Unlike most bids here, we operate as a dedicated engineering team, supporting clients across: IPC-compliant PCB design (up to 32 layers) Embedded firmware & RTOS development IoT, cyber-physical systems & smart devices Power electronics & BMS solutions Our designs are built with manufacturing, reliability, and scalability in mind—backed by collaborations with global component manufacturers. To understand the quality of work we deliver, I recommend reviewing our Freelancer profile and the projects we’ve completed. If this aligns with what you’re looking for, please click the blue “Chat” button to start the conversation—I’d be happy to discuss your project in detail. Best regards, Abbas Jawadwala SMB ElectroTech

@chetanc20

I can deliver a complete EasyEDA hardware package for your Macho voice-assistant board. This includes an accurate schematic matching real module pinouts, a compact PCB layout optimized for I²C/I²S, and full manufacturing outputs (Gerbers, BOM, PnP). I’ll keep all files fully editable in EasyEDA and can also quote turnkey PCBA if needed. Ready to start as soon as you share datasheets/mechanics, with a fast turnaround.

@FranciscoSilvi

I can design the PCB for you at a very competitive price; however, based on your proposal, I understand you need the PCBs fully assembled and soldered. Therefore, you might prefer a freelancer closer to your location. In any case, I invite you to check out my profile and portfolio for any future projects. Best regards!

@hancho6319

As an experienced Embedded Systems Engineer, Electrical & Electronics Engineer, and Software Engineer, I have all the skills and in-depth knowledge necessary to tackle your "Compact ESP32 Voice Assistant PCB" project head-on. With my specialization in Arduino, ESP32, and STM32 and proficiency in designing and building embedded solutions, I am well-equipped to carefully draw full schematics that not only match the real-world pinouts of every off-the-shelf module but also ensure easy drop-in compatibility on male headers of your PCB. Moreover, my comprehensive grasp of electronics through years of rigorous study equips me with the understanding required to maintain sensible routing for complicated I²C and I²S lines while also keeping the overall footprint of the board as small as possible. Pairing this technical know-how with my expertise in simulation and PCB design tools like KiCad, Proteus, and EasyEDA makes me efficient in producing native EasyEDA projects that afford you easy revising flexibility down the line.

@ElecHamza

Hi, I have reviewed your circuit diagram and MACHO documentation and I can design a custom PCB shield that routes your ESP32 GPIOs to the specific female headers for the OLED, INMP441, and SD card modules. I will ensure the layout is compact with M3 mounting holes and features clear silkscreen labeling for easy identification of every pin and socket. I will provide the complete manufacturing files including Gerber and BOM and can also deliver the fully soldered board ready for your plug and play components. Best regards

@OyebisiHakeeem

Hello there I can help with your PCB project. I've thoroughly reviewed your MACHO documentation and understand exactly what you're building. Your v12 ULTIMATE currently uses an ESP32-WROOM-32 with an I²C OLED (GPIO21/22), INMP441 I²S microphone (GPIO33/15/14), and a touch sensor on GPIO4. I've designed similar ESP32-based boards with I²C/I²S peripherals and module-based architectures, so this is well within my expertise. I can deliver a production-ready EasyEDA package that transitions your breadboard prototype to a compact, manufacturable PCB. I will create a complete schematic matching real-world module pinouts so your ESP32 dev board, OLED, INMP441, and two TTP223 sensors drop onto male headers without modification. The PCB layout will prioritize a small footprint while maintaining proper I²S signal integrity for the microphone and clean I²C routing. My timeline is 10-12 days: schematic review (3-4 days), PCB layout with iterations (4-5 days), and final manufacturing package with PCBA coordination (2 days). I specialize in module-based ESP32 designs and work exclusively in EasyEDA, I am confident I can deliver a compact, production-ready board that maintains all your current functionality while preparing for future expansion. Happy to answer any technical questions or share portfolio examples of similar work. Looking forward to bringing MACHO to production!

@josephm626

Dear Client, Good afternoon . I hope this proposal finds you well. This is to inform you that I have KEENLY gone through your project description, CLEARLY understood all the project requirements as instructed in your project proposal and this is to let you know that I will perfectly deliver as desired. Being in possession of all stated required skills, (PCB Layout, Electronics, Arduino, Audio Processing, Electrical Engineering, Circuit Design, PCB Design and Layout, Prototyping and Embedded Systems), as this is my field of professional specialization having completed all certifications and developed adequate experience in the respective field, I hereby humbly request you to consider my bid for professional, quality and affordable services that meet all your requirements. I always guarantee timely delivery and unlimited revisions where necessary hence you are assured of utmost satisfaction when working with me. Please send me a message so that we can discuss more and seal the project. WELCOME.

@kumarabhishekrt

Dear Sir/Madam, I hope you are doing well. I am writing to express my interest in working on your project. I have carefully read your requirements and I truly believe that I can complete this work with good quality and full dedication. I understand that accuracy and timely delivery are very important for this task, and I assure you that I will give my 100% effort to meet your expectations. I am ready to start immediately and I will follow all instructions carefully. If you give me this opportunity, I will prove my skills through my work. Thank you for your time and consideration. Kind regards, Abhishek

@mithunkumars7

Hi, This looks like a clean and well-scoped ESP32 integration project. Using the ESP32-WROOM-32 dev board with header-mounted modules makes the hardware straightforward and reliable. I can create the full schematic in EasyEDA, ensuring that the OLED, INMP441, and TTP223 modules match their real-world pinouts so they can drop directly onto headers without rework. For the PCB, I’ll keep the footprint compact while routing I²C and I²S cleanly and leaving a GPIO expansion header for future use. Deliverables: • EasyEDA schematic & PCB • Gerbers, BOM, and Pick-and-Place files • Optional PCBA quote if required Timeline: approximately 5–7 working days after final pinout confirmation. If you have module photos or mechanical drawings, sharing those upfront will help ensure everything fits correctly.

@Harshulsaini

Hi, I can design a compact ESP32 pass-through PCB with correctly aligned female headers and clear, functional silkscreen labeling for easy plug-and-play use. I have experience designing simple interconnect and breakout boards where mechanical accuracy, pin mapping, and readability are critical. I’ll ensure all headers match the specified pin counts and pitch, include four M3 mounting holes, and route clean direct connections to the defined GPIOs as provided. Silkscreen labels will be minimal but clear for sockets and pin identification. Deliverables will include fabrication-ready Gerbers, BOM, pick-and-place files, and a quotation for one assembled board. Ready to start once pin details are shared.