Smart AC Switch PCB Design

@Mahihassi

As an accomplished Electrical Engineer with a Master’s in Embedded Systems and an extensive background in circuit design and PCB layout, I possess the skills necessary to deliver precisely what you need for your Smart AC Switch PCB design. My expertise with Microcontrollers & Embedded Systems, particularly the ESP8266 module, makes me well-suited to tackle the Wi-Fi connectivity aspect of your project. Drawing from my knowledge of PCB Design & RF Hardware and my familiarity with Altium Designer and KiCad, I will ensure that your board is optimized for its AC switching function whilst adhering to necessary safety clearances and EMI constraints. I fully understand the importance of maintaining safe distances on the high-voltage side, and I will incorporate appropriate creepage/clearance measures into the design. In addition to my technical qualifications, my approach as a freelancer distinguishes me from others. I offer more than just individualized PCB designs—I am ready to support you through your complete product development journey. From initial schematics through firmware development, AI integration, IoT connectivity, and even mechanical CAD if needed, I consider your project as a holistic endeavor rather than isolated tasks. Thus, choosing me won't just equip you with a production-ready PCB—it will come along with comprehensive professional assistance until your product is market-ready. Let's create this cutting-edge smart switch together!

@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!

@ahmedy607

Hello, Please review my portfolio first — I’ve designed multiple ESP-based mains switching boards and isolated SMPS-powered IoT devices prepared for production. I clearly understand the goal: a production-ready PCB for a 240VAC home-automation switch using NodeMCU (ESP-12E), an AC-rated relay, and an onboard mains-to-3.3V supply, sized to fit standard wall/switch enclosure My approach will prioritize **mains safety and isolation**. I will separate high-voltage (AC) and low-voltage (3.3V logic) domains with enforced creepage/clearance according to 230–240VAC standards, use proper slot isolation if needed, and follow safe routing practices. The power stage will use a certified AC-DC module or a properly designed isolated supply (no unsafe capacitive dropper), followed by clean 3.3V regulation for the ESP8266. The relay will be 240VAC-rated with correct contact spacing, snubber/MOV protection across the load, and proper trace width for current handling. If single-layer compromises safety or EMI control, I will move to a clean 2-layer design with solid ground reference Deliverables will include complete schematic, fully routed and annotated PCB, Gerbers + NC drill, structured BOM with footprints, pick-and-place files, and DRC verification results (including measured creepage/clearance distances) so you can order with confidence. This will be designed as a safe, enclosure-ready, production board — not just a hobby relay module. Ready to proceed.

@hancho6319

Having extensive experience in embedded systems engineering, electronics, and PCB design, I am the ideal candidate to bring your Smart AC Switch project to life. I specialize in designing and building embedded solutions using a range of microcontrollers including the ESP8266 platform which your project requires. My deep understanding of electronic circuits and power principles, as well as my proficiency with hardware debugging will enable me to provide a high-quality design that is not only production-ready but also safe. In addition to my work with microcontrollers and electronics, I have a strong foundation in Electrical and Electronics Engineering which further strengthens my approach to circuit design ensuring safety clearances and EMI constraints are considered even while aiming for a single-layer layout.I'm also highly experienced using CAD and PCB design software such as KiCad and EasyEDA pro which will prove essential in delivering the schematic, annotated PCB layout, Gerber/NC drill files, BOM with footprints, and pick-and-place data you require. Finally, it's important to mention that I bring a holistic approach to projects combining hardware design with software development skills.

@BADRTAHIR

Hi there, I am a Senior Embedded Systems Engineer with extensive experience in mains-powered IoT hardware. I can design a safe, reliable, and production-ready AC switch board based on the ESP8266 (ESP-12E) that meets all international safety standards. My Approach for your AC Switch: • Safety First: I will implement a 2-layer layout (highly recommended over 1-layer for safety). This allows for a dedicated ground plane to improve Wi-Fi stability and, more importantly, ensures strict creepage and clearance distances (typically >8mm) between high-voltage AC and low-voltage DC rails. • Power & Switching: I will integrate a compact, isolated AC-DC buck converter to supply the 3.3V rail and select a high-quality 240V-rated relay with appropriate trace widths to handle the rated current without overheating. • EMI/EMC Compliance: I will include an onboard fuse, a MOV for surge protection, and a Pi-filter to minimize noise. • DRC & Simulation: I perform rigorous Design Rule Checks (DRC) for isolation and use thermal analysis to verify that the high-current AC tracks are sized correctly for your load requirements. Deliverables: Full manufacturing pack (Gerbers, NC Drill, BOM, Pick-and-Place) and an annotated assembly guide. Why Choose Me? • Expert Hardware Designer: Legal Altium Designer license holder. • LinkedIn: badr-tahir-b20b92173 • Portfolio: TAHIR Badr by HTML5 UP I can start on the component selection today. Best regards

@engrhasan01

I’m a PCB/Design Engineer with strong experience in PCB design for mains-powered IoT devices, and I can develop a production-ready board for your ESP8266-based AC smart switch. The design will integrate the NodeMCU ESP-12E module, a properly rated 240 V relay, and an isolated on-board AC-DC power supply stepping mains down safely to a regulated 3.3 V rail. I will ensure proper creepage and clearance distances, HV/LV isolation slots if required, EMI-aware routing, and a clean rectangular layout suitable for standard switch enclosures. Deliverables include schematic, fully annotated PCB layout (1-layer or 2-layer if safety dictates), Gerber and NC drill files, complete BOM with verified footprints, and pick-and-place data. I will run full DRC and review mains safety spacing before release for fabrication.

@keaganmini

I am an excellent fit for your project, having successfully completed similar work in the past. I understand your need for a clean, professional, and user-friendly PCB design that integrates the NodeMCU ESP8266, a 240 V-rated relay, and an onboard power supply with appropriate clearance and spacing for safety and EMI considerations. I specialize in schematic capture, PCB layout, and producing fabrication-ready files including Gerbers, BOMs, and pick-and-place data. Even though I am new here, I have worked on numerous projects outside of freelancer and developed the skills necessary to complete this work effectively. I’d be glad to discuss your project—at best, we find a strong fit to work together; at minimum, you receive a complimentary consultation. Regards, Keagan.

@shibbuquadir

With an extensive background in prototyping, I specialize in taking ideas from concept to reality, and your Smart AC Switch PCB design is a perfect project for my skills. I have hands-on experience with the exact components you specified - NodeMCU ESP8266 module, 240 V-rated relay switch and on-board power-supply unit. I am fully versed on their functionality and compatible layout patterns. My extensive knowledge also equips me to take necessary precautions for safety clearances and EMI constraints should an extra layer be required. What truly sets me apart is my commitment to delivering quality within budget and deadlines. Utilizing the latest software tools, I will provide you with a well-annotated, thoroughly tested design ensuring the highest level of performance and safety. The Gerber/NC drill files, BOM with footprints, etc., will be flawlessly executed and prominently organized for smooth fabrication and assembly. I can also run DRC simulations to provide you with key results that will solidify your confidence before ordering boards.

@soumitrab22

Hello I can offer you a very compact rectangular PCB solution for the smart-plug with a very robust construction that will allow you to easily operate high power loads like A/Cs and other appliances easily. Needless to say the PCB will be fully AC compliant with a number of safety features built in so that its safe to operate. Will be a quick turnaround as well with parts readily available. Regards Soumitra

@ostronik

Hi Greetings from OSTronik India! We are a technology-driven company specializing in Power Electronics and Embedded System Design integrated with Artificial Intelligence (AI), delivering reliable, industrial-grade Electronic Solutions—from concept to mass production, all under one roof. Our in-house capabilities include R&D, Firmware Development (C & Python Programming), Hardware Design, Prototyping, and Scalable Mass Production with a focus on quality and cost efficiency. Core Expertise: • Microcontroller : PIC, STM32, ESP Family, AVR, Nuvoton, XBee. • Microprocessors: Raspberry Pi • Development Tools: MPLAB X IDE, Keil, STM32CubeIDE, Arduino IDE, Atmel Studio, VS Code. • Hardware Design: Industrial-grade multilayer PCBs using Altium Designer, KiCad, with efficient power design, isolation handling, and EMI/EMC compliance. • Communication Protocols: UART, SPI, I²C, CAN, Modbus, MQTT, LAN, S-Bus, RS-485, RS-232. • RF Modules: LoRa, nRF Series, XBee, Laird RF Modules. Project Capabilities: Power Monitoring & Energy Management Units, CNC Controllers, BLDC/DC Motor Control, IoT-based Agriculture, Smart Home & Industrial Automation, Inverters, Stabilizers, and Gimbal-based Videography Control Systems. We have already transformed the concept into a successful Electronic solution for multiple clients. To help you better visualise our expertise, we would be glad to share a brief reference video. Let’s schedule a meeting to discuss further. Best Regards, Team OSTronik India

@mugilancar

Hi, I am a Hardware Engineer specializing in IoT and production-ready PCBs. I understand you need a reliable, standard-sized smart switch, and I can deliver exactly that. While 1-layer is possible, I strongly recommend a 2-layer board. Mixing an AC-DC power supply and an ESP-12E on a single layer causes severe EMI and Wi-Fi drops. A 2-layer board provides a solid Ground plane for clean 3.3V power and stable RF signals. Safety is my top priority. I will strictly implement IPC-2221 clearance standards and add physical milling slots (isolation routing) between the 240V AC and 3.3V DC sections to prevent arcing. High-current relay traces will also have exposed solder masks for extra tinning. Deliverables: Schematic & PCB Layout Gerber & NC Drill files BOM & Pick-and-Place (CPL) data DRC report verifying safety clearances Could you share the exact internal dimensions of your switch enclosure? Let's get your board ready for fabrication! Best regards, [@Te4MsLeepz]