ESP32-S3 IoT Schematic and PCB Design

@Mahihassi

I'm Sardar Hasnain, your go-to Electrical Engineer and IoT specialist for this project. With my extensive experience in firmware development and PCB design, I've successfully delivered numerous projects involving balancing signal integrity with tight mechanical constraints, much like the challenge we have here. My proficiency in KiCad, Altium Designerand my background in integrating various microcontrollers such as the ESP32 will prove invaluable for this task, ensuring a robust end-product. What sets me apart is my holistic approach to embedded systems engineering. Having worked on similar designs involving IoT products with hard-wired Ethernet, battery backup systems, and power over Ethernet (POE), I am well-equipped to handle the complexities of your project. Additionally, I have extensively used firmware stacks such as BLE and Wi-Fi in combination with secure cloud pipelines (MQTT, REST, WebSockets) which align well with your requirements. Moreover, my knowledge extends beyond just schematics and PCB layout. As an added advantage, I can also provide insightful design notes to help your firmware team hit the ground running. In short, partnering with me not only gives you access to my impeccable skills in circuit design and PCB layout but also the full breadth of my experience in IoT product development from conception to final delivery. Let's bring your design to life!

@ITECH

As an electrical engineer and expert in IoT product development, I come armed with a versatile skillset that stretches beyond mere circuit design and PCB layout. My team and I have extensive experience with KiCad, alternating with Altium for schematics generation and PCB engineering. We're well positioned to deliver the complete ESP32-S3-WROOM-1-based framework you're seeking, carefully combining the best features from WaveShare, Olimex, and Lilygo designs. What really sets us apart is our ability to beautifully balance signal integrity while adhering strictly to tight mechanical constraints. I understand that your project requires meticulous placement of data-acquisition ports and diligent attention to the overall layout - this is precisely what my team has excelled in for more than a decade. Lastly, our reputation for delivering on-time brings peace of mind in meeting your project timelines. With us on your side, you will have comprehensive, tidy schematics, manufacturable PCB layout that harmoniously integrates with your specific enclosure's design, while ensuring optimal RF performance and Ethernet magnetics. Moreover, our brief design notes ensure your firmware team can quickly bring up the board for further code iterations. Trust us to build your next connected product smoothly!

@macroenergy

With over a decade of diverse experience in circuit design and embedded systems, I am keen on leveraging my expertise to complete your ESP32-S3 IoT schematic and PCB design project. My knowledge gained from developing similar projects in the past dovetails perfectly with your requirements. These include working with ESP32 modules, W5500 boards, signal integrity, and tight mechanical constraints. My experience in multiple aspects of Electrical Engineering, Electronics, Embedded Systems, Power Electronics, and PCB Layout will be especially beneficial for your project. Having used Altium (preference) and KiCad extensively in preivous projects means I can provide you with comprehensive and tidy schematics as well as a manufacturable PCB layout matched with step files supplied by you for proper mechanical fit. My proficiency extends to other aspects critical to your project such as managing power supply from an external source or POE (Power Over Ethernet), integrating LiPo battery backup and charger, data-acquisition ports like UART/SPI/I2C headers along with custom inputs - an area where I'm adept at adapting proven designs to meet unique needs. Additionally, I will provide Gerbers, BOM, pick-and-place files and even 3D step files needed.

@mairajali11

As an accomplished electrical engineer and professional PCB designer, I’ve spent over 8 years honing my skills in KiCAD, Altium, and various other design tools. I have a proven track record in schematic design, layout, and manufacturing of complex IoT devices including those involving ESP32 modules - just like the one you’re looking to develop! I understand the importance of signal integrity, mechanical fit, and adhering to proven designs all while ensuring quick and efficient firmware integration. Your project description specifically mentions the need for balancing signal integrity with tight mechanical constraints, this is an area where I shine bright. My experience in CAD/Housing Design for PCBs in Fusion360 could prove invaluable in respecting your enclosure outline while prioritizing RF performance and Ethernet magnetics. Moreover, my role as a preferred Freelancer, ranked among the top 1% highlights that my work is recognized and appreciated by clients. You can rely on me to deliver complete, tidy schematics aligning your existing reference designs alongside a manufacturable PCB layout that perfectly matches your project requirements. I’ll also provide Gerber files, pick-and-place, BOM, 3D step files along with design notes for a quicker board setup process by your firmware team. Let's discuss your project further to ensure smooth execution!

@tshibsamuel477

Hi there, I carefully read your project description, and this fits very well with my experience in ESP32-based embedded hardware and production PCB design. I can help take the ESP32-S3-WROOM-1 + W5500 concept from schematic capture through to a manufacturable PCB while respecting the enclosure constraints and RF/Ethernet layout requirements. I’m Samuel Tshibangu, a mechatronics engineer with several years of hands-on experience in KiCad/Altium PCB design, ESP32 systems, Ethernet integration, LiPo charging/power management, embedded interfaces, and production-ready hardware development. I’ve already worked with ESP32 modules, SPI Ethernet devices, battery-backed systems, and compact multilayer layouts, so I can move quickly and keep the design robust and practical. I understand the value of leveraging proven reference schematics from Waveshare, Olimex, and LilyGO, and I can help merge the best parts into a clean, maintainable design. I’m also comfortable with the phased workflow using an off-the-shelf module first before integrating the ESP32 circuitry directly onto the board. Feel free to send me the mechanical files and interface requirements so we can discuss the timeline and architecture. Best regards, Samuel Tshibangu

@majeed219

Marrying an ESP32-S3-WROOM-1 with a W5500 means two RF-sensitive domains on one board — the module’s antenna keep-out and the Ethernet magnetics both demand respect, and the LiPo charger adds a third power path to arbitrate cleanly against POE and external supply. The phased approach (off-the-shelf module first, integrated module second) is the right way to de-risk it. Why me? • Designed complex, miniaturized PCBs across ESP32, STM32, Nordic nRF, and Raspberry Pi platforms. • Hands-on with ESP32-S3-WROOM-1 integration — antenna keep-out zones, RF reference planes, and module-to-custom-board migration. • Experienced with W5500 Ethernet layouts including magnetics placement, differential pair routing, and isolation. • Comfortable managing multi-source power — POE, external supply, and LiPo charge/backup arbitration on one rail. • Fluent in KiCad with clean schematics, enclosure-matched layouts, and complete Gerber/CPL/BOM/STEP packages. • response within 2 minutes during work hours. Happy to jump on a short call to review the reference designs and mechanical files before kickoff.

@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.

@yaroslavmark

Hi, your project matches my experience very closely — especially ESP32-based industrial/embedded boards that combine Ethernet, battery backup, mixed interfaces, and mechanically constrained layouts intended for production. I have 10+ years of PCB and embedded hardware experience and completed 100+ multilayer boards including ESP32-S3, W5500 Ethernet, LiPo charging/power-path systems, PoE interfaces, and RF-sensitive layouts prepared for manufacturing and enclosure integration. Approach ✅ I will develop clean KiCad schematics using proven reference sections from WaveShare, Olimex, and LilyGO designs while optimizing power architecture, Ethernet integration, battery backup, and interface protection for production reliability. ✅ I will execute the PCB layout in phases if desired, starting with a prototype using an off-the-shelf ESP32 module before optionally integrating the ESP32 circuitry directly onto the final production board. ✅ I will optimize RF keep-outs, Ethernet differential routing, grounding, PoE/power distribution, LiPo charging paths, and enclosure alignment using your STEP data before generating complete manufacturing outputs and 3D deliverables. Questions ✅ Which PoE standard and input voltage range should the board support alongside the LiPo backup system? ✅ What approximate enclosure dimensions and PCB layer-count constraints are expected for the final hardware? Best, Yaroslav

@nabeelraza1993

Designing an ESP32-S3-WROOM-1 data-acquisition board with Ethernet, battery backup, and enclosure constraints requires careful schematic integration. Well what I can do for you as Electronics engineer with 8+ years of experience is develop your complete KiCad schematic. In fact, I’ve worked on multiple ESP32, Ethernet, IoT, embedded-systems, and PCB-design projects so creating a reliable ESP32-S3 platform with UART, SPI, I²C, and digital inputs aligns directly with my embedded electronics engineering experience.

@TheElitePro

Hi, 1. I understand you need a production-ready ESP32-S3-WROOM-1 carrier design integrating a W5500 Ethernet controller, PoE external power input, LiPo backup + charging, and multiple acquisition interfaces, while fitting a defined enclosure and supporting a phased development approach. 2. I have experience designing ESP32-based IoT hardware, Ethernet-enabled embedded systems, battery-powered devices, and mixed-signal PCBs, with strong focus on manufacturability and mechanical integration. 3. Relevant Projects: * Hardware architecture design ESP32 NodeMCU32 with Ethernet W5500 and I/O * ESP32 WROOM based product design which includes sch, PCB, BoM, mechanical integration. This is now released to production. 4. My approach: a) Phase 1: * Use ESP32-S3 module for rapid prototype validation * Integrate W5500, power subsystem, UART/SPI/I2C headers, digital inputs, and custom I/O block * Validate enclosure fit b) Phase 2: * Optimize for production * Migrate ESP32 circuitry on-board if desired 5. Deliverables: * KiCad schematics and PCB layout * Gerbers, BOM, Pick-and-Place, STEP files * Stack-up and design notes 6. I focus on practical, manufacturable hardware that moves smoothly from prototype to production. 7. I am a preferred freelancer with 5 star rating and repeat customers. I am available for a quick discussion today between 2PM-8PM IST. Let's connect. Regards, Vishal

@Ryan15222

As a multidisciplinary engineer, I bring a unique skill set that uniquely qualifies me for your project. Having worked on many projects encompassing mechanical design, electronic integration, and software development - I have the skills required to design, prototype, and implement solutions from concept to deployment. Specifically, in the field of mechanical design, I'm proficient in CAD design and comfortable working with materials, fabrication methods, and ensuring optimization for manufacturing. In electronics, my experience extends to PCB design and hardware integration where I can confidently handle schematics, components selection, and reliable communication between hardware and control systems. On the software front, I can develop firmware and control logic for embedded devices. I believe what sets me apart is my ability to integrate these disciplines rather than treating them in silos. By treating mechanical components in conjunction with electrical components, I ensure RF performance along with respecting mechanical constraints without compromising on signal integrity. My approach leads to robust, efficient solutions for real-world engineering challenges.

@kaykya3

Hello, I am a senior electronics and PCB design engineer with extensive experience in ESP32-based systems, W5500 Ethernet integration, battery backup circuits, and mixed-signal layout. I will develop a complete, production-ready PCB based on your requirements, using proven subcircuits from WaveShare, Olimex, and LilyGo, optimized for your enclosure's mechanical constraints. I am ready to begin as soon as you share the enclosure STEP file, the custom input block specifications, and any reference schematics you have. Sincerely, Kayky