KiCad Designer for School Access Control System

@MuhammadUzair16

Hi I am an embedded systems engineer with over 16 years of experience. I have designed many KiCad PCBs that combine ESP32-class controllers, Ethernet/PoE power, protected inputs, relays, LEDs, and enclosure-driven layouts, so your school access controller is a good fit. For this board I would first confirm the PN532 choice with you: using a proven module is usually safer on a 2-layer 80mm x 35mm board, while a custom antenna is possible but needs more care. I can then prepare the schematic and PCB around ESP32-S3, external Ethernet PHY, 802.3af PoE power path, 12/24V input protection, isolated relay drive with flyback protection, WS2812B placement, mounting holes, and clear firmware pin mapping. You will receive the full KiCad project, BOM with sourceable parts, Gerbers, and a concise pinout document so you can adapt your existing firmware without confusion. Please contact me to discuss details.

@amelectronics

Hi, your project sounds very interesting, and I’d be happy to help with the hardware side. I have solid experience in PCB design, ESP32-based boards, power supply design, PoE integration, RFID interfaces, and relay driver circuits. I can review your current prototype and help design a reliable production-ready PCB with proper RF considerations, power protection, Ethernet/PoE, and signal integrity in mind. I mainly work in Eagle CAD, but I can still review schematics, suggest design improvements, and assist with hardware architecture, BOM selection, and layout recommendations for your board.

@tetianam8

⭐⭐⭐⭐⭐ Your project is well thought out, and since the firmware is already working, I can focus on turning your breadboard prototype into a reliable, production-ready KiCad PCB while keeping your existing pin assignments as intact as possible. I'll design a compact 80 × 35 mm, 2-layer board with the ESP32-S3, PN532 interface, PoE-powered Ethernet, protected 12V/24V power inputs, relay driver with flyback protection, and WS2812B status LEDs. I'll also optimize the layout for manufacturability, signal integrity, and easy assembly inside your 3D-printed enclosure. Milestones: Schematic review & component selection PCB layout & routing ERC/DRC verification Gerbers, BOM, pinout guide & final KiCad project A couple of questions: • Are you planning to use an external Ethernet controller (such as W5500) or do you already have a preferred Ethernet solution? • Do you already have the enclosure dimensions and mounting-hole locations, or should I help define them? I'd be happy to help you turn your prototype into a professional PCB that's ready for fabrication.

@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

@danish2051

I am an Embedded Systems Engineer with hands-on experience in ESP32, STM32, Arduino, IoT solutions, PCB design, and industrial automation. I specialize in developing complete hardware and firmware solutions from concept to production. My experience includes sensor integration, wireless communication, data logging systems, Ethernet and Wi-Fi connectivity, MQTT communication, cloud integration, and custom PCB development. My expertise includes: • ESP32 Firmware Development • STM32 Firmware Development • Arduino Projects • PCB Design using Altium Designer • IoT Solutions (Wi-Fi, BLE, Ethernet, MQTT) • AWS IoT Integration • Sensor Integration and Calibration • Data Logging Systems • Industrial Automation Projects • Embedded Linux Development • Serial Communication (UART, RS485, Modbus) • I2C, SPI, CAN Bus Development • Product Prototyping and Testing Recent project experience includes: • ESP32 Ethernet-based monitoring systems • BLE sensor networks with multiple wireless nodes • Engine dynamometer data acquisition systems • Industrial pressure, temperature, RPM, and level monitoring systems • MQTT-based cloud monitoring solutions • Custom PCB design and manufacturing support I focus on delivering reliable, well-documented, and production-ready solutions while maintaining clear communication throughout the project. Let's discuss your project requirements and build an efficient solution together.

@ahmedy607

Hi, I can help with this project. I have experience with ESP32, PoE/Ethernet, RFID/NFC, relay control, and KiCad PCB design. I'll deliver the complete schematic, PCB layout, BOM, Gerbers, and pinout documentation, optimized for manufacturing and your enclosure constraints. Please check my portfolio for similar projects. I'm ready to start immediately. Best regards, Ahmed

@alluankit01

Hi, I can design the KiCad PCB for your school access control system, converting the working breadboard prototype into a clean 2-layer board sized for your 80mm x 35mm vertical enclosure. The best solution is to first review your prototype wiring, firmware pin usage, enclosure constraints, lock voltage/current, preferred RFID approach, and PoE/network requirements. Then I can create the schematic and PCB layout with ESP32-S3, PN532 RFID/NFC, RJ-45 Ethernet/PoE section, external Ethernet controller/PHY as suitable, relay driver with flyback protection, 12V/24V/PoE power input protection, WS2812B LEDs, mounting holes, and clear pinout documentation. I’m comfortable with KiCad, ESP32 hardware, RFID/NFC modules, relay control circuits, power protection, PoE-powered designs, Ethernet interface routing, compact PCB layouts, BOM preparation, Gerber generation, and enclosure-aware board design. Deliverables will include: * Full KiCad schematic * 2-layer PCB layout * ESP32-S3 pinout mapping * PN532 RFID/NFC recommendation * PoE / DC input power section * Relay output with protection * WS2812B LED connections * Mounting holes and enclosure alignment * BOM with sourceable parts * Gerber fabrication files * Firmware adaptation pinout document I’ll focus on a practical student-friendly design that is safe, manufacturable, and easy for you to assemble and test. Best regards Ankit

@haseebsidd07

Hi There, I understand that you are looking for a well-designed PCB in KiCad for your access control system, which includes crucial features such as the PN532 RFID/NFC reader, ESP32-S3 MCU, RJ-45 jack with PoE capabilities, and additional requirements like relay output and various power inputs. I can ensure that your project meets your specifications and functions flawlessly. As an experienced electronics engineer with over 6 years in Microcontroller, PCB Layout, Product Design, Circuit Design, Embedded Systems, and Signal Processing, I have successfully worked on similar projects and can provide you with a reliable PCB design that integrates all your needs effectively. You can review my relevant portfolio here: https://www.freelancer.com/u/haseebsidd07 Looking forward to discussing and delivering a successful solution for your project. Thank you, Abdul Haseeb Siddiqui

@ThynkLoop

Hi, I can help convert your working breadboard prototype into a compact, production-ready 2-layer KiCad PCB for your school access control system. Since the firmware and prototype are already completed, I will focus on designing a reliable PCB that integrates RFID, Ethernet with PoE, multiple power inputs, relay control, and status LEDs while maintaining compatibility with your existing firmware. I have experience in ESP32 hardware design, KiCad PCB development, RFID interfaces, Ethernet hardware integration, relay circuits, power management, and embedded system design. The PCB will be optimized for reliable operation, ease of manufacturing, and integration into your 3D-printed enclosure. Proposed Approach • Design the complete KiCad schematic around the ESP32-S3, PN532 RFID reader, Ethernet interface, relay output, and WS2812B status LEDs • Implement safe multi-input power handling with support for 12V, 24V, and PoE, including reverse-polarity and over-voltage protection • Create a compact 80 × 35 mm, 2-layer PCB with proper mounting holes, connector placement, and routing suitable for your enclosure • Prepare a complete BOM with readily available components, Gerber files, and a pinout document to simplify firmware adaptation Deliverables • KiCad schematic and PCB source files • Gerber files and fabrication package • BOM with sourceable components • Design notes and manufacturing-ready documentation

@Laibakashif21

Hi there, This is a very clear embedded hardware project, and the important part is designing the PCB so it is not just a breadboard replacement, but something reliable enough for real access-control use inside an enclosure. I can help create the full KiCad schematic and PCB layout around the ESP32-S3, PN532 RFID/NFC reader, Ethernet/PoE section, relay lock output, protected multi-input power design, and WS2812B status LEDs. For the PN532 antenna, I can recommend whether an onboard trace antenna or tested module is the safer route based on your enclosure constraints, RF reliability, and fabrication tolerance. I’ll pay particular attention to PoE power design, RMII routing for the external Ethernet PHY, relay isolation and flyback protection, reverse-polarity/overvoltage protection, clean power rails, mounting holes, and the vertical 80mm × 35mm board constraint. The final package will include the KiCad project, schematic, PCB layout, BOM with sourceable parts, Gerbers, and a clear pinout document so your existing firmware can be adapted easily. But im a bit curious about — do you already have preferred parts/modules for the PoE PD controller, RJ-45 magnetics, and PN532 reader, or should I select reliable sourceable components for the BOM? Best regards, Laiba

@atikmurtaza

Hey, your access control PCB will be designed as a reliable, production ready KiCad project with careful attention to PoE, Ethernet, RF layout, and power management, ensuring it integrates seamlessly with your existing firmware and enclosure. I'll develop the complete schematic, PCB layout, BOM, Gerber files, and documentation, optimizing the design for signal integrity, manufacturability, and safe operation across all supported power inputs while keeping the board within your specified dimensions. I have experience designing embedded electronics and custom PCBs with a strong focus on clean layouts, robust power distribution, and practical designs that move smoothly from prototype to fabrication. One quick question: Are you planning to use an ESP32-S3 module for RF certification, or would you prefer the ESP32-S3 chip integrated directly onto the PCB?

@mahidumpa

Hello, I would be excited to help bring your access control system from a breadboard prototype to a professionally designed PCB. As an Embedded Systems and PCB Design Engineer with experience in ESP32-based systems, power management, communication interfaces, and multi-layer PCB design, I can deliver a compact, manufacturable, and reliable solution tailored to your enclosure constraints. For your project, I can design: ESP32-S3 based controller board with external Ethernet PHY support PN532 RFID/NFC integration with recommendations for antenna implementation PoE-powered Ethernet interface with proper power isolation and protection Multiple power input support (12V, 24V, and PoE) with reverse polarity and overvoltage protection Relay output stage with flyback protection and logic isolation WS2812B status LEDs and debug/programming interfaces Optimized 2-layer PCB layout within the specified 80 mm × 35 mm form factor I understand the importance of RF layout, PoE design, signal integrity, and manufacturability, and I will ensure the final design is suitable for fabrication and integration into your 3D-printed enclosure. I look forward to discussing your existing prototype and helping turn it into a reliable production-ready PCB. Best regards, Mahesh Dumpa Embedded Systems & PCB Design Engineer

@Shidqii1204

Hello, Your project is well defined, and I'd be happy to help transform your working prototype into a professional KiCad PCB. I understand that the firmware and software are already completed, so my focus will be on creating a reliable, manufacturable hardware design. I will carefully design the schematic and PCB while considering component placement, power integrity, signal routing, relay isolation, and mechanical constraints for your 80 × 35 mm enclosure. My design approach includes: - Creating a clean KiCad schematic based on your prototype. - Designing a compact 2-layer PCB with proper mounting holes. - Integrating the ESP32-S3, PN532 interface, Ethernet, power circuitry, relay driver, and WS2812B LEDs. - Reviewing power distribution, protection circuits, and PCB manufacturability. - Providing a complete KiCad project, Gerber files, BOM with readily available components, and a pinout document to simplify firmware integration. Before starting, I'd like to review your existing prototype schematic and enclosure dimensions to ensure the final PCB matches your hardware and mechanical requirements. I look forward to working with you and helping bring your prototype to a production-ready PCB. Best regards, Qodamu

@andymike383

Hi, I'm Anindya, a Robotics & Embedded Systems Engineer with hands-on PCB design experience — happy to take the RF and PoE side off your plate so you can focus on firmware. This is a well-thought-out spec, and I can turn it into a clean 2-layer KiCad design to replace your breadboard setup. Approach: PN532 with on-board trace antenna if your 80x35mm footprint allows, otherwise a module for reliable RF performance ESP32-S3 + LAN8720 PHY over RMII for Ethernet, with PoE (802.3af) via a PD controller and isolated DC-DC stage Relay output for your door lock with flyback protection and optocoupler isolation from logic Input protection so that 12V DC, 24V DC, or PoE can all be safely applied 2x WS2812B placed per your layout Mounting holes matched to your enclosure I'll give the PoE/Ethernet and relay sections the isolation and trace care they need — that's usually where boards run into trouble at fab. Deliverables: Full KiCad project (schematic + PCB) BOM with sourceable parts (Digi-Key/Mouser/LCSC) Gerbers are ready for fab Pinout doc to map to your existing firmware Feel free to share your breadboard schematic or pin assignments — helps keep your code mostly drop-in compatible. Happy to answer any questions before starting. Best, Anindya

@ArunHardware

Hi, I’m a Hardware Design Engineer with experience in KiCad PCB design, embedded hardware, power supply design, and protection circuits. I have designed PCBs involving ESP32-based systems, relay interfaces, DC-DC converters, reverse polarity protection, TVS protection, and EMI-aware layouts. Your project is very interesting, and I can design a compact 2-layer KiCad PCB that meets your mechanical and electrical requirements. I can deliver a complete schematic, PCB layout, BOM with sourceable components, Gerber files, and a pinout document for firmware integration. I pay close attention to PCB layout quality, signal integrity, power routing, and design for manufacturability to ensure the board is reliable and ready for fabrication. I would be happy to discuss your requirements in more detail and start the project as soon as possible. Thank you for your time, and I look forward to working with you. Best regards, R. Arun