ESP32 4-Relay PCB Design -- 2

@amelectronics

I am a skilled and reliable Embedded Systems Engineer with over 6 years of hands-on experience in Arduino, ESP32/ESP8266, and microcontroller-based development. I specialize in designing efficient, stable, and scalable embedded solutions, turning ideas into fully functional hardware-software systems. I have a strong background in electronics, sensors, communication protocols (UART, I2C, SPI, MQTT, WiFi, BLE), and real-time embedded systems. My development approach focuses on clean, well-structured, and well-documented firmware, ensuring long-term reliability and easy maintenance. I also provide thorough testing, debugging, and performance optimization, including power efficiency improvements where required. I am a detail-oriented engineer with strong problem-solving skills and extensive experience in hardware debugging and firmware optimization. Beyond technical expertise, I value clear communication, meeting deadlines, and maintaining high client satisfaction. I work closely with clients to fully understand project requirements and deliver high-quality results. Pricing is flexible and can be discussed based on project scope and complexity. I am open to both short-term and long-term projects. Let’s work together to build a professional, reliable, and efficient embedded system for your needs.

@mzdesmag

Hello sir, Did go through your job description and glad to share that I have enormous experience in working with ESP32 4-Relay PCB Design - I'm a seasoned programmer and Engineer with quality experience in Flutter, React, Node.JS, SpringBoot, Frontend and Backend Development, Python, Matlab, R studio, C, C++, C#, OpenCV, OpenGL, Tesseract OCR, google vision, Statisticaal programming/R progamming data analysis Computing for Data Analysis Time Series & Econometric, Machine learning, AI, Deep learning, Matlab and Mathematica, 3D modeling, CAD/CAM,AutoCAD, 2D, Architectural Engineering, SolidWorks, Unity 3D, PCB, Electronics, Arduino, Automation, Embedded and Firmware , IOT, Electrical/Mechanical Engineering I am a TOP Rated Freelancer, and you can check my reviews here as well: https://www.freelancer.com/u/mzdesmag. Looking forward to potentially working together on this project. Thanks and Best regards, Adekunle.

@nehasingh17

Hi, we at HardFault already have a very similar ESP32-based 4-channel relay controller design ready, including onboard AC-DC power section, relay driving, status LEDs, and safety-focused HV routing. Based on your requirements for the Urban Proto module, we can quickly customize it into a square, production-ready PCB with proper creepage/clearance, surge protection, manual override buttons, and BOM optimization for Indian sourcing. We have prior experience with ESP32 smart switch/relay boards and mains-powered designs, so safety, compact routing, and manufacturability are already part of our process. We can deliver the complete schematic, PCB layout, Gerbers, pick-and-place, fabrication package, optimized BOM with alternates, and compliance notes for HV spacing/fusing. Since we already have a proven base design, if your review and requirements align with our existing architecture, we can ship the first release within 2 days for your review, followed by one revision round as requested. Curious to know — are you planning this relay module for home automation, industrial switching, or a custom IoT platform, as that will influence whether SSR or electromechanical relays make more sense?

@riab54

Hello, I can design a production-ready ESP32-based 4-channel relay PCB optimized for compact square form factor and Indian manufacturing requirements. Deliverables will include: • Complete schematic + PCB layout (KiCad/Altium) • Gerbers, fabrication, pick-and-place, and assembly files • Optimized BOM with alternate components • Safety/compliance notes for HV routing, fusing, and isolation • One revision cycle after review I can also help choose between electromechanical relays and SSRs based on enclosure size, thermals, reliability, and target BOM cost. Looking forward to building a safe and production-ready module for “Urban Proto.”

@Santoshchaulaga

Hello, I am Santosh Chaulagain, a professional Electrical Engineer and PCB Designer with over 7 years of experience in schematic design, PCB layout, and embedded systems, including ESP32, IoT devices, analog and digital circuits. I have successfully completed multiple projects for clients worldwide, delivering reliable and manufacturable designs. I have carefully reviewed your project requirements and I am confident that I can provide a high-quality solution tailored to your needs. My expertise includes PCB design using industry standards, component selection, BOM preparation, Gerber generation, and design optimization for cost and performance. I always ensure that my designs are fabrication-ready and tested for reliability. I focus on clear communication, timely delivery, and customer satisfaction. I am happy to discuss your project in detail and provide revisions until the final result meets your expectations. Looking forward to working with you. Best regards, Santosh C. Electrical Engineer | PCB Designer | ESP32 & IoT Specialist

@Webslinger01

I’ve been designing ESP-based relay PCBs for over a decade, and I can deliver exactly what you need without the usual back-and-forth. Your project description is clear, and I can move from schematic to a tested prototype quickly. I’ve shipped similar boards for industrial automation and smart vending systems, handling the PCB layout, component selection, and firmware integration myself. No handoffs, no delays. I’ll give you a clean, manufacturable design with proper isolation, adequate trace widths for your relay loads, and a layout that passes EMI sniff tests without a fight. I can also provide the firmware if needed. Let me know the relay count and whether you need optocoupler isolation, and I’ll have a timeline and fixed price for you within a day.

@alluankit01

✨ Hi, I can design the Urban Proto ESP32 4 relay PCB as a compact square board with onboard AC to DC supply, relay indicators, manual override buttons, surge protection, and proper high voltage safety spacing. I have experience with ESP32 relay boards, mains powered PCB design, AC to DC modules, relay driver circuits, opto isolation where needed, MOV or TVS surge protection, fuse selection, snubber protection, creepage and clearance planning, KiCad and Altium PCB layout, Gerbers, BOM, pick and place, and fabrication files for production. My first step would be to confirm relay load rating, enclosure size, board dimension limit, input voltage, preferred relay type, and local component availability. Then I’ll design the schematic, route the compact PCB with clear separation between AC and low voltage sections, add LED indicators and override buttons, and prepare manufacturing files with compliance notes for safety spacing and fusing. I can also optimize the BOM with India available parts and provide one revision after your review. Best regards Ankit ✨

@Ryan15222

With my comprehensive background in mechanical design, electronics, and software development, I possess the perfect blend of skills necessary to bring your Urban Proto relay module to fruition. Having designed and developed numerous products before, I understand the importance of efficient, practical designs that remain cost-effective without sacrificing quality or reliability. In terms of electronics and hardware integration, including PCB design and component selection, I have developed a deep level of comfort thanks to my solid history working with embedded systems. My proficiency in firmware development and control logic for embedded devices will further ensure smooth communication between your hardware and control systems. My experience with microcontrollers and industrial communication protocols would also facilitate the optimal integration of all parts for your project. Lastly, my previous work has routinely demanded complying with applicable safety standards – A skill that will enable me to deliver manufacturable designs meeting all high-voltage safety margins suitable even for Indian manufacturing standards. All these put together emphasizes that I am not just a fit for this project but rather resonates that I'll be the best fit for it, as it allows me to apply my diverse experiences towards the creation of a safe,affordable module that can roll straight into production.

@anjalin0309

Hi there! Your "Urban Proto" 4-channel relay module project is right up my alley. I have extensive experience designing production-ready, high-voltage ESP32 boards optimized for local Indian manufacturing. Here is how I will deliver a safe, compact, and cost-effective solution for you: Design & Safety Strategy • Form Factor: Tight, square layout with optimized component placement to fit your enclosure perfectly. • Power & Protection: Integrated, compact AC-DC converter with a robust input stage featuring an MOV (surge protection) and a fusible resistor/fuse. • HV Isolation: Strict adherence to Indian safety standards (IS/IEC 60950-1/62368-1). I’ll implement deliberate isolation slots (milling cutouts) and clear creepage/clearance distances between the AC mains and the low-voltage ESP32 zone. • Relay Selection: I will provide a quick cost-vs-size comparison between compact electromechanical relays (like Sugar Cube/Omron) and SSRs to help you choose the best fit for your load requirements. Deliverables You Will Receive 1. Schematic & PCB Layout: Clean, native files in Kicad 2. Production Files: Industrial-grade Gerbers, NC Drills, and Pick-and-Place data. 3. Localized BOM: Optimized with Indian distributor part numbers (Element14, Mouser, or local vendors) and cheaper alternates to keep manufacturing costs low. 4. Compliance Report: Documented safety margins, track widths, and thermal management choices. 5. 1 Free Revision Round to incorporate your feedback.

@bugm

Hello, I’d be excited to help develop your “Urban Proto” 4-channel relay module into a production-ready PCB suitable for Indian manufacturing and deployment. I have strong experience in ESP32-based embedded hardware and high-voltage PCB design, including projects involving pure sine wave inverters, smart energy meters, industrial IoT controllers, Wi-Fi automation systems, battery management systems, and mains-powered monitoring devices. For your module, I can deliver a compact square-form-factor PCB with carefully separated HV/LV domains, optimized creepage and clearance, onboard isolated AC-DC power supply, surge and fuse protection, relay driver circuitry, status LEDs, and manual override controls. I have previously designed relay and AC switching boards with EMI-conscious layouts and production-focused BOM optimization using components readily available through Indian suppliers like Mouser India, Element14, and local distributors. Deliverables will include: • Complete schematic and PCB layout (KiCad/Altium) • Manufacturing-ready Gerbers, drill files, pick-and-place, and assembly drawings • Optimized BOM with alternate parts • Safety/compliance notes for HV spacing and protection • One revision after review My focus is always reliability, manufacturability, and cost-efficient production readiness. I’d be happy to discuss enclosure limits, relay load ratings, and preferred manufacturing process before starting. Looking forward to collaborating.

@dhritimand2

With my expertise in circuit design and experience with embedded systems, I am confident that I can deliver precisely what you need for your "Urban Proto" relay module. As someone who has shipped numerous ESP32 and high-voltage relay boards, I have the necessary knowledge to optimize your PCB design while ensuring it meets all safety standards and cost-effectiveness goals. I adopt a practical problem-solving approach in all my projects, keeping in mind factors like space constraints, optimized performance, clean code, and fast delivery. By leveraging my skills in PCB layout and electronics, I will produce thorough schematics and a layered PCB layout using platforms like Altium or Eagle (whichever you prefer), along with Gerbers and fabrication drawings ready for local production in India. Moreover, given my familiarity with local markets and parts sourcing, I'll provide an optimized Bill of Materials (BOM) that favor low-cost local sourcing. High-voltage safety is paramount in this project; I'm well-versed in meeting stringent safety requirements and delivering products with minimum safety distances and appropriate fusing. Let's collaborate to create a compact yet reliable module that can seamlessly transition into production.

@letswork92

Creating a production-ready PCB for your “Urban Proto” 4-channel relay module is an exciting challenge. I understand that space constraints and safety compliance are critical factors for this project, especially when dealing with high-voltage applications in accordance with Indian manufacturing standards. With over 12 years of experience in electronic design, I've successfully shipped multiple projects involving ESP32 and high-voltage relay boards. I specialize in developing compact layouts using tools like Altium and KiCad, ensuring optimal routing while maintaining safety margins. My expertise extends to selecting the right components to balance cost, size, and reliability effectively. I will provide a comprehensive schematic and layered PCB layout along with all necessary fabrication files while ensuring compliance documentation is clear and concise. Could you please clarify if you have any specific preferences regarding the type of relays (electromechanical vs solid-state) for this design?

@arks8

I am an experienced PCB Designer and Embedded Systems Engineer with hands-on expertise in schematic design, multilayer PCB layout, analog and digital circuit design, sensor interfacing, ESP32/ESP8266-based systems, and IoT hardware development. I have worked on multiple real-world projects including smart energy meters, automation systems, and embedded control devices. I can provide: • Professional schematic and PCB design • Compact and optimized routing • Gerber files and manufacturing-ready outputs • Component selection and BOM preparation • Support for prototyping and testing • Fast communication and timely delivery I focus on reliable, efficient, and production-ready PCB designs with proper grounding, power management, and signal integrity. I would be happy to discuss your project requirements and deliver a high-quality solution according to your needs.

@manis341

Hi, I’m an embedded hardware and firmware developer experienced in ESP32-based product development, relay control systems, and production-ready PCB design. I can design your compact square-form-factor “Urban Proto” 4-channel relay module with proper high-voltage isolation, creepage/clearance, and manufacturability suitable for Indian production standards. Deliverables include: • Complete schematic and PCB layout (KiCad/Altium) • ESP32-based design with 4 relay outputs • Integrated AC-to-DC power supply with fuse and surge protection • LED indicators and manual override buttons • Compact routing with proper HV/LV isolation • Gerbers, fabrication files, pick-and-place, and assembly outputs • Optimized low-cost BOM with locally available components and alternates • Safety/compliance notes covering fusing and spacing • One revision after review I can also help choose between SSR and electromechanical relays based on cost, size, thermal performance, and reliability. Previously worked on: • ESP32 automation boards • Relay and mains-switching products • Embedded control hardware from concept to production I focus on practical production constraints like component availability, assembly reliability, and enclosure-aware placement. Looking forward to discussing dimensions, relay load requirements, and manufacturing targets.