ESP32-S3 Industrial Controller PCB + 2.9-inch e-paper panel in a compact housing

@iamhamzazaki

As your project calls for a seasoned hardware engineer and enclosure designer, my extensive background in PCB design, embedded firmware, and IoT product development make me a perfect fit for your needs. I possess a broad skillset including CAD/CAM, Circuit Design, Electronics and Embedded Systems that will be invaluable to the successful execution of your project. Having worked on various PCB designs using KiCad, I am adept at creating efficient layouts and delivering essential files such as Gerbers, BOMs, pick-and-place files etc. Furthermore,I have extensive experience with the ESP32-S3 module and W5500 Ethernet along with e-paper display panels akin to those you desire - making me skilled at wiring up these components. Similarly, I am familiar with designing power systems for 12V/24V industrial environments and incorporating opto-isolated outputs, protected digital inputs, RS232/RS485 communication protocols among other things into embedded systems.

@macroenergy

With a strong background in digital motor control, electronic design and PCB Layout, I am confident that my extensive experience will be a compelling asset. I have worked on various projects that required intricate circuit designs, meticulous PCB layout and skillful management of embedded systems, and I am familiar with ESP32 and other relevant components central to your project. Additionally, through my work in Power Electronics and Renewable Energy, I have developed a deep understanding of industrial power supplies, which harmonizes well with your requirement for 12V/24V DC industrial power design. Furthermore, as an Electronics Engineer, I am well-versed in designing for manufacturing and value the significance of delivering production-ready designs that you desire. My proficiency in using KiCad for schematic design and Gerber generation as well as mechanical enclosure design suitable for panel mounting or surface mounting aligns perfectly with the scope of this project. And finally, rest assured, I recognize the critical emphasis on open communication throughout this project to ensure we deliver according to specification. My aim is not only to meet but exceed your expectations. Looking forward to the possibility of joining this amazing opportunity to put our skills together and arrive at an exceptional product.

@markoa7

As an electronics hardware engineer and enclosure designer, I possess the skills and experience required to take your industrial embedded controller project from concept to production. My impressive knowledge and track record with PCB design, from power supply circuits to multilayer designs for embedded systems, make me an ideal candidate for this task. I have hands-on experience with ESP32-S3 and various communication interfaces, including Ethernet, RS232, and RS485. Moreover, my mastery of CAD/CAM and my ability to deliver cost-effective solutions align well with your project requirements. I have a proven capability in FCC/CE compliance design as well as a deep understanding of designing circuits compatible with demanding industrial environments at up to 24V DC. Previous projects have equipped me to address protection needs such as reverse polarity protection in your power input stage. Last but not least, my commitment to delivering high-quality products on schedule without compromising on performance guarantees that your project will be completed precisely as you envisioned. With my expertise in designing compact yet sturdy enclosures, I can create a sleek, professional-looking casing for your e-paper display unit while ensuring its serviceability. Let's get started on transforming your innovative ideas into reality!

@Ryan15222

With over a decade of experience in various engineering fields, including CAD design, electronics, and firmware development, I am confident that my skill set aligns perfectly with your project requirements. My deep understanding of the ESP32-S3 and industrial power designs provides the know-how to produce a reliable system for your small machine-control environments. My experience in developing compact enclosures with professional aesthetics ensures your remote display unit will both fit seamlessly into any machine cabinet and remain replaceable and serviceable for optimal durability. Furthermore, my proficiency in choosing the right components and cultivating robust communication systems will be invaluable when designing the main controller PCB with features like Ethernet connectivity, opto-isolated outputs and protected digital inputs.

@engrusmanfaiz

Your core challenge is designing a robust ESP32-S3 industrial controller with clean Ethernet, isolated I/O, and reliable remote e-paper interfacing—without EMI, power, or field failure issues. I have strong experience in ESP32 hardware, W5500 Ethernet design, industrial 12V/24V power systems, opto-isolated I/O, and KiCad-based PCB + enclosure development. I have worked on similar industrial controllers, remote display systems, and mixed-signal embedded designs for real-world environments. I will design a production-ready architecture with protected power input, stable DC-DC stages, clean Ethernet layout, robust RS232/RS485 interfaces, and reliable opto-isolated outputs/inputs. The remote 2.9” e-paper unit will use a clean SPI interface with a serviceable cable and compact enclosure. PCB will follow EMI/ESD best practices with proper grounding, isolation, and industrial connector layout. Full deliverables include KiCad design, Gerbers, BOM, pick & place, STEP/STL enclosures, and complete documentation. This is exactly the type of industrial system I specialize in and I am ready to start and deliver end-to-end hardware design. Regards, Engineer Muhammad Usman

@majeed219

Got it — proposal below. ~140 words. Splitting the display from the I/O box is the right call — service either side without cracking the cabinet. The real risk here isn’t the ESP32-S3; it’s W5500 magnetics layout, opto-isolation under switching noise, and an enclosure that survives a real machine environment. Why me? • 5 years on ESP32 hardware including S3, with W5500 Ethernet, RS485/RS232 and opto-isolated I/O — exactly this stack. • In-house pipeline: KiCad schematic and layout, 3D enclosure CAD, on-site printer for prototype runs before STL handoff. • Direct fab relationships in China for production-grade Gerber/BOM/pick-and-place turnaround. • End-to-end capability if you later need firmware, web, or mobile from one source. • Five-minute response in work hours plus daily written progress updates. • 2 weeks free post-delivery support included. Open to a 15-minute call this week to walk through architecture trade-offs?​​​​​​​​​​​​​​​​

@Amidst

Hey there! I’m Alok, A PCB, Circuit and Mechanical designer with a passion for turning ideas into rock-solid, high-performance circuit boards. even expert on Python, C, C++ With nearly a decade of experience, I’ve tackled everything from compact consumer gadgets to complex industrial systems—always with a focus on precision, efficiency, and reliability. # Schematic & Layout Design – Clean, optimized, and manufacturable. # Component Selection & Library Management – No surprises, just the right parts for the job. # Reverse Engineering – PCB cloning, replication, and improvements. # Gerber, BOM & CPL Generation – Ready for seamless production. # DFM & DFA Expertise – Because great design means smooth manufacturing. # Multi-Layer, Flex, & High-Density PCB Design – Whatever the project needs. If you need a PCB and Code that’s efficient, reliable, and built for real-world performance, let’s chat. I’d love to help bring your project to life!

@SPARKtechBD

Since 2003 I am working in Digital Electronic. So more than 18 years of experience in Electronics. Arduino NANO/UNO/MEGA, ESP32 and Raspberry PI to build a digital device to read sensor data and send it to the web server, motor control, control relay switches and LEDs. More than 5(five) years of experience in Arduino design and build. If you want an excellent and error-free project delivery, then send a message to me, please. Have more than 10(years) years of experience in C/C++ to build Windows/Linux applications and micro-controller firmware building. If you want a good job delivery, then send a message to me, please. Since 1995 I have been working on Analog and Digital Electronics to build any kind of device. I have build lots of devices. So more than 20 years of experience on Electronics. Including power supply design. Any kinds of schematic and PCB design. Expert PCB design in EasyEDA Pro IDE.

@Mahmoud00Ibrahim

Hello, I’m an embedded hardware engineer specialized in ESP32-based industrial controllers and full PCB-to-enclosure product design. I’ve previously developed systems involving ESP32/ESP32-S3, W5500 Ethernet, RS485/RS232 interfaces, opto-isolated I/O, and robust 12/24V industrial power stages using KiCad, including production-ready deliverables (Gerbers, BOM, PnP, STEP/STL). Your project is well-defined but has several critical engineering points I regularly handle: • Ethernet + ESP32-S3 EMI-safe layout (very sensitive in industrial cabinets) • Long-distance SPI routing for e-paper (needs proper connector + buffering strategy) • Reliable 24V protection stage (surge, reverse polarity, filtering) • Opto-output topology selection (cost vs isolation vs switching capability trade-off) • Proper separation of noisy I/O vs RF/MCU domain My approach is system-level: not just PCB routing, but full architecture optimization before layout to avoid redesigns later. Plan: Architecture + component selection (optimized BOM + safe I/O mapping) Full KiCad Project (Library - Sch - PCB layout) with clean modular design Industrial PCB layout (EMI-safe Ethernet, isolated zones, serviceable routing) Full production package: Gerbers, BOM, PnP, STEP/STL, wiring & pinout docs I can also propose improvements to reduce cost and improve reliability (especially in output expansion and display connection strategy). Ready to start immediately with system architecture phase.

@cesur135

With a wealth of hands-on experience in industrial automation spanning wastewater treatment plants, water treatment plants, energy automation, ventilation systems, and more, my skills align perfectly with the requirements of your project. I have a thorough understanding of both hardware and software design, which is crucial given that your project focuses primarily on the former. Combining these skills with my considerable experience,I am confident in my ability to create an exceptional ESP32-S3-based industrial controller PCB with Ethernet, opto-isolated outputs and protected digital inputs that meet industry standards. Using KiCad - a tool I am well-versed in, I can guarantee an expertly done schematic design as well as a PCB layout that takes into account precision and any requirements regarding electromagnetic compatibility and power management. Additionally, having set up field instruments extensively and dealt directly with field applications in small enterprises like yours,I am keenly aware of ensuring your desired 12V/24V DC industrial power input operates safely. As far as your e-paper panel's design goes, drivers so ensuring simple yet reliable cable connectivity to the compact remote display is assured. In conclusion, my solid experience in hardware design specifically within a diverse range of Industrial Automation scenario gives me an edge while executing this project efficiently(with proper documentation) keeping in minds its industrial-use requirements

@wick63807

Hi: Shell design is one of my strengths. I use PTC/Creo software, and product design fees tend to be lower for simpler products. I hope we can discuss this in detail. I have been working in product design since 2008, designing numerous products and handling mold making, production, and assembly. I have extensive experience in mold making and 3D printing design. Because in the early stages of product development, I need to confirm the prototype assembly through 3D printing before communicating with the mold-making factory for Design for Manufacturability (DFM). This includes confirming the injection port location, wall thickness uniformity, mold flow analysis, parting line location, etc. The plastic material needs to be determined during product development, as different materials cannot be injection molded using the same mold. I can respond quickly to your instructions and ensure the task is completed within the specified timeframe, as I handle all of this independently. I hope to have the opportunity to work with you and serve you. I look forward to your reply.

@mahmoudralizadeh

Dear Hiring Manager, I am an experienced electronics and enclosure designer specializing in industrial control hardware. Your project perfectly matches my expertise in robust embedded system design with ESP32-S3 controllers and custom PCB/enclosure development. Here is my proposed approach: - Main PCB: - ESP32-S3 main controller - W5500-based Ethernet (RJ45) - Protected 12/24 V DC power input & DC/DC conversion - Opto-isolated outputs (expandable via SPI), protected digital inputs - RS232/RS485 interfaces - Clean connector system for remote e-paper display - Service/boot buttons, status LEDs, and robust screw terminals - Remote Display Unit: - 2.9” e-paper panel (Waveshare/Good Display compatible, SPI, BW) - Industrial compact enclosure (panel-mount/desktop) - Reliable cable with secure connector for main board communication - Serviceable, clean front appearance, replaceable - Deliverables (all production-ready): - KiCad schematic & PCB (Gerber, PnP, BOM, wiring/connector docs) - 3D enclosure design in STL/STEP - Wiring diagrams, connector specs, and assembly notes I have extensive hands-on experience with: - Industrial ESP32/STM32 control boards - Ethernet (W5500, LWIP) and e-paper integration - Power/IO, opto-isolation, RS232/RS485 design - Mechanical 3D CAD for manufacturing (Fusion360/Solidworks) - DFM/DFT practices, wiring harness design, safety & serviceability Timeline: - Schematic/block diagrams: 1 week - PCB, enclosure & documentation: 3-4 weeks - Full deliverable package for production I deliver with clear documentation, manufacturing focus, and support for prototyping. Check my portfolio for similar industrial designs—references available. Looking forward to working with you on this innovative controller system. Best regards,

@tetianam8

⭐⭐⭐⭐⭐ I’ve gone through your spec—this is a full industrial controller + remote HMI design, and the key risks are power integrity (24V), isolation strategy, and clean Ethernet + mixed-signal layout. I’ve designed ESP32 + industrial I/O boards with RS485/RS232, opto outputs, and DIN-rail enclosures, so this fits well. Proposed architecture: • MCU: ESP32-S3 module (RF-safe, easier certification) • Ethernet: W5500 + RJ45 w/ magnetics (controlled impedance routing) • Power: 12–24V → buck (LM2596/MP1584) → 5V → LDO 3.3V • Protection: reverse polarity (PMOS), TVS, input filtering • Outputs: optocoupler + MOSFET (open-drain, 24V tolerant, LED per channel) • Inputs: protected (divider + TVS + opto or Schmitt stage) • Comms: MAX3485 (RS485), MAX3232 (RS232) • Display: 2.9” SPI e-paper via shielded cable + locking connector PCB (4–6 layer): • Solid GND planes, separated noisy I/O vs logic • Short return paths, stitching vias, EMC-conscious layout • Clear field wiring + service-friendly silkscreen Mechanical: • DIN-rail enclosure for controller • Compact panel/surface mount display housing • 3D-printable, production-ready STEP/STL Milestones: Architecture + components Schematic PCB layout + Gerbers Enclosures Final docs Timeline: ~2–3 weeks Quick questions: Target output current per channel? Max cable length for display? Any EMC compliance target (CE/UL pre-check)?

@abdurRafiqM

HI, I am an experienced electronics and PCB Design engineer, specialised in use of ECAD software such as Altium Designer, KICAD, EasyEDA, etc. for the the design of electronics and PCB. I will design your projects to meet your Requirements and the industry standard. I do all kinds of circuits such as Power delivery circuit, Sensor Integrated Circuits, wireless control, MCUs etc. I will deliver the following. The Schematics for your Design The PCB for the design Bill of materials(If needed) Gerber, Pick and Place and other manufacturing and assembly drawings needed. Full Support and consultancy till the project is done. Kindly send me message for my previous designs and also so we can discuss further on your project I look Forward to working with you. Best Regards, Abdur-Rafiq

@usmanbashir12100

Hi, I can design your ESP32-S3 industrial controller end-to-end, including schematic, PCB (KiCad), and dual enclosure design (controller + e-paper display). I have experience with ESP32, W5500 Ethernet, RS485/RS232, opto-isolated I/O, and 12/24V industrial power systems, with production-ready PCB layouts and mechanical integration. **Deliverables:** KiCad files, Gerbers, BOM, STEP/STL, and full wiring documentation. Ready to start with architecture and component selection immediately.

@ahmedy607

Hi, This is a well-structured industrial controller project, and I can take it from architecture to production-ready hardware. I’ll design a robust two-part system: • Main ESP32-S3 controller board with Ethernet (W5500), RS232/RS485, protected 12–24V input, and opto-isolated I/O • Remote 2.9" e-paper display unit with a reliable cable interface Focus will be on industrial reliability: proper isolation, surge/ESD protection, clean grounding, and service-friendly layout. I’ll also deliver compact, practical enclosures suitable for prototyping and small-scale production. Deliverables include full KiCad project, PCB layouts, Gerbers, BOM, pick-and-place, STEP/STL files, and complete wiring/pinout documentation. Happy to align on architecture and connector strategy before starting. Best regards, Ahmed

@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

@hayleyc27

I can design a compact, industrial-grade controller built around the ESP32-S3 with seamless integration of a 2.9-inch e-paper display. I’ll handle the full PCB design process—from schematic capture to layout—ensuring stable power regulation, proper signal routing, and EMI/ESD protection suitable for industrial environments. Special attention will be given to low-power optimization, display interface reliability (SPI), and robust connectivity options such as Wi-Fi, BLE, or external I/O depending on your requirements, all within a space-efficient board design. In addition, I will develop a compact and functional enclosure that accommodates the PCB and e-paper panel while ensuring durability, heat management, and ease of assembly. Deliverables will include manufacturing-ready Gerber files, BOM, 3D enclosure design, and documentation for production. If needed, I can also support firmware integration for display control and system logic. My goal is to deliver a reliable, production-ready solution that combines performance, efficiency, and clean industrial design in a compact form factor.

@adily1

Hey , I just finished reading the job description and I see you are looking for someone experienced in Circuit Design, Industrial Design, Embedded Systems, Mechanical Engineering, CAD/CAM, Prototyping, Electronics and PCB Layout. This is something I can do. Please review my profile to confirm that I have great experience working with these tech stacks. While I have few questions: 1. These are all the requirements? If not, Please share more detailed requirements. 2. Do you currently have anything done for the job or it has to be done from scratch? 3. What is the timeline to get this done? Why Choose Me? 1. I have done more than 250 major projects. 2. I have not received a single bad feedback since the last 5-6 years. 3. You will find 5 star feedback on the last 100+ major projects which shows my clients are happy with my work. Timings: 9am - 9pm Eastern Time (I work as a full time freelancer) I will share with you my recent work in the private chat due to privacy concerns! Please start the chat to discuss it further. Regards, Adil.