Design Compact ESP32-S3 RF Hub

@amelectronics

Hi, I have experience in designing Circuits and can complete your project. I have expertise in the following: 1- Designing schematic and PCBA 2- Ordering the PCBA and getting boards manufactured. 3- Writing firmware for the PCBA to make sure everything works as expected. 4- I can also develop smartphone apps to communicate and control the hardware. If you wish we can discuss in chat. Thank you.

@markoa7

As an experienced PCB/RF engineer, I believe I am the perfect fit for your project. Over the years, I have built a strong skillset with a deep understanding of circuit design, embedded systems and PCB layout - precisely what you are looking for. My knowledge of working with high-power electronic designs, specifically DC-DC and AC-DC conversion circuits coupled with my specialization in RF layout, make me highly competent for optimizing your prototype into a production-ready, compact industrial PCB. One area that sets me apart is my competence in implementing wireless technologies such as Wi-Fi, Bluetooth, ZigBee - making me well-equipped to address your 2.4 GHz RF requirements. I have developed RF filters, splitters, transceivers, and power amplifiers tailored to specific needs like yours and have a complete grasp on the complexities involved such as impedance control routing for a controlled 50-ohm impedance and achievable antenna coupling. Moreover, I am also thorough in developing power supplies to accept wide-input AC/DC like your peak DC voltage consideration while designing power input modules. My familiarity with JLCPCB/LCSC Assembly further ensures that the components used will be easily accessible for production. Rest assured to receive prompt deliveries of a complete manufacturing-ready project including Gerber files, Bill of Materials and more. Choose me for a job well-done.

@Mahihassi

With a proven track record in PCB design and RF hardware, I am confident that I can deliver your compact ESP32-S3 RF Hub project with precision and efficiency. Not only do I possess expertise in various microcontrollers, including ESP32, but I am well-versed in the intricacies of embedded systems and IoT product engineering. My comprehensive understanding of firmware development and a range of wireless stacks - BLE, Wi-Fi, LoRa, Zigbee - perfectly aligns with the requirements of this project. I understand the significance of mutual antenna coupling, receiver desensitization, RF isolation, and other crucial aspects you've mentioned. Collaboration is key for me so you can expect regular updates and my attention to detail for designing internal communication between ESP32-S3 devices which support 2.4 GHz RF sections. My commitment extends beyond delivery as I always provide warranted post-closure support. By employing me for this project, you're getting comprehensive proficiency under one umbrella while ensuring timely completion and meticulous execution of all aspects from schematic design to BOMs & CPLs with JLCPCB/LCSC assembly in mind. Allow me to put my skills to use for a compact future-ready RF Hub you can be proud of!

@mairajali11

With over 8 years of experience in designing high-quality circuit boards, specializing in compact designs and RF integration, I am confident in my ability to fulfil your requirements for the new design of your ESP32-S3 RF Hub. Throughout my career, I have worked with various software including Eagle, Altium, KiCAD and EasyEDA - the latter being my speciality - which will prove essential in delivering a compact yet robust PCB layout suited to JLCPCB/LCSC assembly. Moreover, I understand the challenges posed by multiple 2.4GHz RF sections within close proximity - issues like mutual antenna coupling and receiver desensitization must be addressed meticulously to maintain optimal performance. My thorough understanding of RF system design, which includes antenna placement and orientation, impedance routing and S11/S21 measurements among others, will ensure that the four nearby 2.4GHz RF sections are well-managed while compromising neither performance nor miniaturization. To top it off, as a meticulous Electrical/Electronics Engineer well-versed in signal processing and mathematics and experienced in MATLAB/SIMULINK & Python programming, I provide a holistic approach to projects. I not only focus on laying out the circuits but also take into account overall system design. Trust my skillset to deliver an incredibly efficient compact design that meets your highest standards.

@tshibsamuel477

Hi there, I have carefully reviewed your requirements and can support the redesign of your working prototype into a compact, production-ready industrial PCB. With nearly five years of experience in mechatronics, Altium Designer, multilayer PCB design, ESP32-based hardware, power supplies, communication interfaces, and production documentation, I can handle the schematic, PCB miniaturization, 4× ESP32-S3 integration, LTE/433 MHz sections, USB-C programming selection, relays, protected I/O, and the 5–60 V AC/DC power architecture. Special attention will be given to the four nearby 2.4 GHz RF sections through antenna placement/orientation, controlled-impedance routing, RF keep-outs, grounding, matching networks, and isolation. I can also prepare the design for VNA-based S11/S21 validation during prototype testing. I will deliver complete editable source files and a JLCPCB-ready manufacturing package. Please send me a message so we can review the existing prototype, mechanical constraints, and RF requirements. Best regards, Samuel tshibangu

@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!

@Mahmoud00Ibrahim

I’m a Senior Hardware Engineer with hands-on experience designing compact ESP32-based IoT and tracking devices. I previously designed an Advanced Tracker PCB based on ESP32, integrating GPS/GNSS, microSD storage, wireless connectivity, power management, and external interfaces in a compact production-oriented design. For your project, I can handle the complete hardware redesign from schematic and component selection through compact multilayer PCB layout, RF/antenna considerations, power design, and manufacturing-ready files. I’m also experienced with ESP32 RF layout, controlled impedance, antenna keep-outs, EMI/EMC considerations, and JLCPCB/LCSC production. I can share relevant PCB examples and discuss the RF approach for the four ESP32-S3 sections.

@TingWang250617

Hi, I can deliver your board as a complete, manufacturing-ready package — schematic, multilayer layout, and all production files — without the usual back-and-forth between designer and fab house. I have 14+ years of experience in PCB design and firmware development. I work daily in Altium Designer, KiCAD, and Eagle, and I own licenses for Altium and Eagle, so I can start immediately on your project. My background covers: • 2–16 layer PCB layout, high-speed routing, and controlled-impedance design • Mixed-signal boards, power distribution, and EMI-aware placement • Full deliverables: schematic, PCB layout, BoM, Gerbers, pick-and-place, ODB++, assembly drawings, DRC report, and 3D STEP model I previously worked at READA PCB Technology in Shenzhen as a PCB designer and production manager. That factory-side experience means my layouts are built for real manufacturing — correct clearances, sensible via strategy, and DFM/DFA checks before files go out the door. If you also need prototypes or small-batch assembly, I can coordinate PCB fabrication, PCBA, component sourcing, functional testing, and shipping through the Shenzhen network I know well from my time at READA. I am available to start right away and happy to sign an NDA before reviewing your design brief. Looking forward to your reply. Best regards, Ting

@tetianam8

⭐⭐⭐⭐⭐ I’m very interested in this redesign. Since you already have a working prototype, I would treat the existing hardware as the proven functional baseline and focus on miniaturization without compromising RF performance, power integrity or manufacturability. I have 15+ years of experience in electronics/PCB development, including embedded hardware, RF sections, ESP32-based designs and production-ready PCB work. I’m not a licensed engineer, but I approach the design with careful schematic review, controlled-impedance routing, DRC/DFM checks and prototype validation. For the four ESP32-S3 RF sections, I would pay particular attention to antenna orientation, spacing, ground/keep-out geometry, matching networks and isolation between radios. I would validate S11 and investigate coupling/desense with VNA measurements where available, rather than relying only on simulation. I can handle the complete Altium/KiCad design: schematic, multilayer PCB, 2.4 GHz/433 MHz/LTE RF routing, wide-input power stage, relays, protected I/O, USB-C programming selection, BOM/CPL, Gerbers, STEP and JLCPCB-ready manufacturing files. For LTE, I can evaluate compact Cat 1/Cat 1 bis modules based on availability, certification and power requirements. Once I review the existing prototype documentation, I can provide a fixed price and realistic timeline.

@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

@hayat38402

Hello, I am Muhammad Javed, an electrical engineer with more than 10 years of experience in PCB design, embedded systems, RF hardware, and electronics engineering, serving clients from the USA, UK, Canada, Australia, Oman, Saudi Arabia, and other countries. I can redesign your proven prototype into a compact, production-ready industrial PCB while preserving its existing architecture and functionality. I have experience with ESP32-based designs, RF PCB layout, controlled-impedance routing, antenna matching, LTE modules, power supplies, relays, protected I/O, and manufacturing documentation. For the 4x ESP32-S3 RF sections, I will carefully address antenna placement/orientation, ground-plane design, RF keep-outs, 50Ω routing, matching networks, mutual coupling, RF isolation and receiver desensitization. I can plan VNA-based S11/S21 validation and antenna tuning. I can also design the 5–60V AC/DC input with rectification, surge/transient protection, filtering and regulation, along with LTE, 433MHz RF, USB-C programming selection, relays and industrial I/O. Deliverables will include editable schematic/PCB files, Gerbers, BOM, CPL, manufacturer/LCSC part numbers, DRC/DFM checks and JLCPCB-ready production files. I can recommend the appropriate PCB layer count, LTE module and antenna strategy after reviewing your existing prototype. I am ready to review the documentation under NDA and provide a fixed price and delivery schedule.

@hayteekeys

HI, KINDLY READ THROUGH MY PROPOSAL I will redesign your existing working multi-ESP32-S3 prototype into a compact, production-ready industrial PCB with four independent 2.4 GHz RF sections, LTE, 433 MHz, protected I/O, relays, and wide-input 5–60 V AC/DC power fully optimised for RF performance and JLCPCB manufacturing. Answers to your questions 1–4. Experience: Multiple production ESP32-S3 and multi-radio PCBs with ceramic/chip 2.4 GHz antennas, LTE modules, and 433 MHz sections. Designed boards with 2–4 co-located 2.4 GHz radios while managing isolation. 5. Mutual coupling reduction: Careful antenna placement/orientation, ground-plane isolation, RF fencing, keep-out zones, and controlled impedance. 6. Validation: Full EM simulation + VNA measurements (S11, S21, isolation). 7. VNA access: Yes. 8. Recommended size/layers: ≈ 100 × 60 mm (or smaller if RF allows), 4- or 6-layer. 9. Recommended LTE: Compact Cat 1 bis module suitable for Europe (e.g. Quectel EG91/EG95 series or equivalent). 10. 5–60 V AC/DC: Yes — bridge, surge protection, filtering, and wide-input regulation designed for peak rectified voltage. 11. Fixed price: To be discussed after NDA and review of existing prototype details. 12. Timeline: 10-14days depending on complexity and feedback speed. DELIVERABLES Complete Altium/KiCad project, schematic, PCB layout, Gerbers, BOM (with LCSC), CPL, RF matching details, programming documentation, and one revision after prototype review.

@danish2051

I am an Embedded Systems and PCB Design Engineer with experience in Altium Designer, Kicad, Easyeda, Protious and custom hardware development. I can design your PCB from schematic to production-ready files, including: • Schematic Design • PCB Layout • Component Selection • Design Rule Check (DRC) • Gerber Generation • BOM Preparation • Manufacturing Support (JLCPCB, PCBWay, etc.) I have experience with ESP32, STM32, sensor interfaces, power supplies, RF modules, Ethernet, and industrial electronics. Please share the project requirements, schematic (if available), board dimensions, and any special requirements. I can start immediately. Looking forward to working with you.

@sakshis576

As an experienced PCB/RF engineer, I've successfully worked on numerous projects that align closely with your requirements. My proficiency in Circuit Design, Embedded Systems, Manufacturing Design and PCB Layout make me uniquely qualified to undertake the task of miniaturizing and redesigning your existing prototype into a compact, production-ready industrial PCB with the specifications you've outlined.

@cesur135

As an experienced engineer, I have a deep understanding of PCB design, particularly in the realm of industrial automation, which is directly applicable to this project. Having worked extensively with Siemens TIA Portal and E Plan P8 V2.6 programs, I am well-versed in drawing precise electrical projects and can provide you with an elegant PCB layout while ensuring manufacturability using platforms like JLCPCB/LCSC assembly. I am also thoroughly capable of delivering clear schematics that accurately depict your complex requirements. Moreover, my experience extends to RF design and multi-radio PCBs, which are crucial considerations for your project. I understand the importance of controlled impedance routing for RF sections and can apply the necessary matching networks to ensure optimal performance. My familiarity with S11/S21 measurements and VNA-based RF validation means that I am equipped to successfully tackle the challenge of placing four 2.4 GHz sections on one compact board. Finally, my skills span across multiple areas that are pertinent to your undertaking - from power supply design, including bridgrectification and surge protection, to USB-C implementation for programming/debugging four ESP32-S3 devices smoothly. The practicality and proficiency in my approach would be valuable in creating a compact yet powerful board given your space parameters. With a comprehensive manufacturing-ready project as deliverables including editable source files, gerber files etc.,

@ahmedy607

Hi, Please check my portfolio—you’ll find several ESP32 and RF PCB projects I’ve designed. I’ve carefully read the requirements and understand that this is a miniaturization and RF redesign of an already working system, including 4× ESP32-S3 RF sections, LTE, 433 MHz, relays, protected inputs, and a 5–60 V AC/DC power stage. I can handle the complete schematic and PCB design with proper 50Ω RF routing, antenna keep-outs, matching networks, grounding, and separation between the four 2.4 GHz sections, while keeping the design compact and production-ready for JLCPCB/LCSC. I’m also comfortable with the required manufacturing package and can recommend the appropriate layer count, LTE module, and RF architecture after reviewing the existing prototype documentation. Best regards, Ahmed

@shykhAbubakar

Hi, I am willing to sign an NDA. I am ready to redesign your existing prototype into a compact, production-ready industrial PCB featuring four independent ESP32-S3 sections with 2.4 GHz RF, LTE connectivity, 433 MHz RF, a wide-input AC/DC power supply, and USB-C programming, while following IPC-2221, IPC-6012, and JEDEC standards for reliable multi-radio PCB design and manufacturing. Project Deliverables: Electrical schematic Complete PCB layout Editable source files Gerber files & BOM CPL / Pick-and-Place files JLCPCB-ready production package LCSC part numbers where possible RF matching details Antenna component details DRC / DFM checks Programming/debug documentation I have a few questions: Q: Could you share the existing schematic, and connection details to begin the redesign? Q: Do you have any specific preference for the LTE module or the ESP32-S3 antenna type for the 2.4 GHz sections? Over 7 years of experience in PCB design, RF engineering, and multi-radio embedded systems. Similar projects I have completed: 4x ESP32-S3 Multi-Radio PCB with 2.4 GHz & LTE Integration Compact Industrial RF Hub with Wide-Input Power Supply I recommend a 4-layer, 100×60 mm board with a Cat 1 bis LTE module, and I can design the 5–60 V AC/DC power input with proper protection. Software I can use: Altium Designer/KiCad LTspice My portfolio is attached below: I am ready to start immediately. Thank you! Warm regards, Abubakar

@mahmoudralizadeh

Hi, I see you need a compact ESP hub design. I'm currently finishing a compact ESP32-WROOM security board (USB-C power, AMS1117 regulator, PIR sensor, buzzer) in KiCad—so I know the ins and outs of squeezing components into a small footprint while keeping routing clean and DRC-passing. I can handle the full schematic and PCB layout, with attention to power distribution and sensor placement. Quick question: will this use the ESP32's onboard antenna, or do you need a custom antenna design? If it's just PCB/schematic work, I can start today and deliver Gerbers + change log within 24-48 hours. Let me know.

@alluankit01

Hi, I can redesign your working prototype into a compact, production-ready ESP32-S3 RF hub with 4 ESP32-S3 sections, LTE, 433 MHz RF, relays, protected inputs, wide AC/DC input, and USB-C programming selection. My approach will be to first review your existing schematic, RF layout, firmware architecture, enclosure limits, I/O details, and NDA documents. Then I’ll propose the layer count, RF placement strategy, LTE module, antenna layout, power architecture, and JLCPCB/LCSC-ready component choices before routing. For 4 nearby 2.4 GHz radios, I would reduce coupling using antenna orientation/spacing, RF keep-outs, grounded shielding areas where needed, controlled 50Ω traces, proper matching networks, clean ground return paths, and isolation review between RF sections. Validation can include VNA-based S11/S21 antenna matching/isolation checks after prototype. Recommended PCB: 6-layer if size stays near 100 × 60 mm, to improve RF, power, and isolation. LTE module: Quectel/SimCom Cat 1/Cat 1 bis option suitable for Europe after size and certification review. Deliverables: * Complete schematic and PCB layout * Editable source files * 4x ESP32-S3 RF sections * LTE + Nano SIM + antenna * 433 MHz RF section * 5–60 V AC/DC power input * USB-C programming selector * BOM with MPN/LCSC options * Gerbers, drill, CPL/P&P * RF matching notes * DRC/DFM checks * JLCPCB-ready package * Programming/debug documentation * One prototype review revision Timeline: 4–6 weeks. Best regards Ankit