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Please be careful, you must create the 3 real PCBs; we are not interested in virtual projects. After the 3 PCBs have been successfully tested here in our office, we will release the money following the rules of freelacer.com. I will agree on the cost of the work and the time of execution with the developer. I've already built some prototypes of a circuit capable of switching a single 230 V, 16–30 A line to 4, 8, or 12 outputs—without power loss—but none of them have reached the standards I expect. I have schematics, calculations, thermal measurements, and test logs: enough material to clarify every technical detail and speed up your work. I need a senior designer who can transform all this into a final solution, complete with ESP32 firmware, a multilayer PCB (4 or 6 layers, JLCPCB production - 3oz copper), and an accurate and documented simulation before production. Technical requirements to be met: • Maximum energy efficiency, component protection, and precision switching under load. • Integrated remote control, real-time monitoring, and an alarm system. • Proficiency with the ESP32 IDE for firmware development. • Use of "best-in-class" design and simulation software: Altium Designer, KiCad, or another platform that ensures thermal analysis, signal integrity verification, and credible power simulations. Expected Deliverables - Final schematics with optimized bill of materials. - Production-ready PCB layout (JLCPCB, Gerber, pick-and-place, stack-up). - Simulation reports (thermal, current, transients). - Working ESP32 firmware with remote control, telemetry, and alarm interfaces. - Lab testing instructions. I will accept the project once it passes the load tests (30 A continuous), insulation verification, and full network functionality. I am available to provide additional measurements or arrange a video session to show you the hardware already built. If you have the right equipment and the power switching experience I'm looking for, let's get to work right away: I want to send the files to JLCPCB as soon as the circuit passes the simulations.
Projekt-ID: 40272599
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With a solid background in Industrial Automation, Energy Automation, and Process Automation, I have developed a comprehensive set of skills that align perfectly with the requirements of your project. I am well-versed in several powerful design and simulation softwares like Altium Designer and Kicad which guarantees I will deliver not just any solution, but an optimized one that ensures maximum energy efficiency, component protection, and precise switching under load. Additionally, my proficiency with the ESP32 IDE for firmware development will enable me not only to design a multilayered PCB (4 or 6 layers with JLCPCB production - 3oz copper), but also to develop a working ESP32 firmware complete with remote control, telemetry, and alarm interfaces. My commitment to excellence aligns exactly with your quality-oriented approach as well - each aspect from the final schematics to simulation reports will be thoroughly documented to ensure it meets your criteria before we even consider sending it to JLCPCB.
$500 USD på 7 dage
5,2
5,2
42 freelancere byder i gennemsnit $824 USD på dette job

Dear [Client], As someone who is well-versed in electrical engineering and highly experienced with power electronics, I am confident in my ability to deliver the optimal solution you seek. My skills in analog design, microcontroller programming, and embedded system development have been honed over many years of working on complex engineering projects. Not only familiar with ESP32 but a range of others including PIC series, Atmel, and STM32. Moreover, I am an expert in energy-efficient switching systems and have a strong background in renewable energy. Successfully designing AC/DC converters, DC-DC converters, battery chargers, and even solar inverters- I've dealt with complex systems akin to your project demands. These experiences have equipped me with an astute sense of component protection and precision switching which align closely with your technical requirements. My familiarity with premier design and simulation software like Altium Designer and Orcad promise the quality you're seeking. My simulations are renowned for their thoroughness in thermal analysis, signal integrity verification, and credible power simulations. I understand how important this is for manufacturing safety and high-performance circuits alike.
$350 USD på 12 dage
7,4
7,4

Hello, I’ve reviewed your specification for a three-board, production-ready power switching system with ESP32 control. I’ll map your collected schematics, calculations, and test data into a robust final design that meets your load tests (30 A continuous) and insulation checks, while delivering an FPGA-free, embedded solution you can trust. My approach combines a multi-layer PCB (4-6 layers, 3 oz copper), optimized for low loss and high thermal efficiency, with a clean ESP32 firmware stack for remote control, telemetry, and alarms. I’ll run thermal, signal integrity, and transient simulations in KiCad/Altium, produce a complete BOM, Gerber/PnP files, and formal lab testing procedures. Final deliverables will include production-ready schematics, layout, and a thorough assembly guide. What is your preferred timing for the 3-board production run and any constraints on the PCB stack-up or enclosure dimensions? Best regards, Marko Aleksic
$555 USD på 2 dage
6,7
6,7

Hi sergio, KINDLY READ THROUGH MY PROPOSAL THIS IS WHAT I WILL DO - I already Analyze your schematics, calculations, thermal data, test logs to optimize the high-current switching circuit (230V/16-30A to 4/8/12 outputs with zero loss). - Design 4/6-layer PCB in KiCad (3oz copper, JLCPCB DFM): compact layout, thermal vias, wide traces for 30A, isolation barriers. - Run full simulations (LTspice for transients/power, KiCad thermal/IBIS for SI, efficiency >98%). - Develop ESP32 firmware (Arduino/IDF): remote control, real-time monitoring, alarms, network integration. - Produce 3 real PCBs via JLCPCB, test for 30A continuous load, insulation, functionality – ship to your office for final verification. - Deliver: schematics/layout files, Gerbers/drill/pick-place, BOM (LCSC codes), sim reports, firmware source + hex, testing instructions. RELEVANT PROJECTS - 2025: 240V/25A multi-output switcher (ESP32 + TRIAC) – zero-loss, JLCPCB 6-layer, field-tested 500+ hours. - 2024: High-power AC distributor (4-16 outputs) – simulations matched real 30A loads, zero revisions. I am an High-power embedded expert and am ready to start immediately, deliver design in 1 days, PCBs/test in 10 days total. Sergio please trust me and let me handle this project for you
$720 USD på 10 dage
6,4
6,4

Hi, how are you doing? I went through your project description and I can help you in your project. your project requirements perfectly match my expertise. We are a team of Electrical and Electronics engineers, we have successfully completed 1000+ Projects for multiple regular clients from OMAN, UK, USA, Australia, Canada, France, Germany, Lebanon and many other countries. We are providing our services in following areas: Embedded C Programming. VHDL/Verilog, Quartus/Vivado, LabVIEW/ Multisim/PSPICE/VLSI MATLAB/SIMULINK Network Simulator NS2/NS3 Microcontroller like Arduino, Raspberry Pi, FPGA, AVR, PIC, STM32 and ESP32. IDEs like Keil MDK V5, ATmel studio and MPLab XC8. PLCs / SCADA PCB Designing Proteus, Eagle, KiCAD and Altium IOT Technologies like Ethernet, GSM GPRS. HTTP Restful APIs connection for IOT Communications. Also, we have good command over report writing, I can show you many samples of our previous reports. Kindly consider us for your project and text me so that we can further discuss specifically about your project's main goals and requirements.
$500 USD på 7 dage
6,1
6,1

Hello, I understand you need a fully engineered, multi-output power switching circuit with ESP32 control, optimized for 230 V, 16–30 A lines, and built across three physical PCBs. I will transform your prototypes, schematics, and test data into production-ready 4–6 layer PCBs (JLCPCB, 3 oz copper) with full simulations for thermal, current, and transient performance. Firmware will be developed for ESP32, enabling remote control, real-time monitoring, and alarms. I will provide optimized BOM, final schematics, detailed PCB layouts, simulation reports, lab testing instructions, and ensure the system passes load and insulation verification. Deliverables: production-ready PCBs, verified firmware, simulation documentation, and testing procedures. The design will focus on maximum efficiency, precise switching, and robust component protection. Client Clarification Questions: Should the ESP32 firmware support local override in addition to remote control? Are there specific communication protocols preferred for telemetry and alarm reporting (MQTT, HTTP, WebSocket)? Thanks, Asif
$750 USD på 11 dage
5,2
5,2

Best High-Power ESP32 PCB Design Expert ⭐⭐⭐⭐⭐ Hi, Thank you for posting your project, “Efficient Power Switching Circuit with ESP32 Controller.” I’ve reviewed your requirements and can help you transform your prototypes into fully functional, production-ready PCBs. I bring 11+ years of experience in high-current power electronics, multilayer PCB design, thermal analysis, and industrial-grade microcontroller integration, ensuring efficient switching, safe operation, and reliable remote monitoring. ✅ How I’ll Help You Succeed 1. Optimize your schematics and component selection for maximum efficiency and precision switching under load. 2. Design and deliver 3 fully tested multilayer PCBs (4–6 layers, 3 oz copper) suitable for JLCPCB production. 3. Integrate ESP32-based control with real-time telemetry, alarms, and networked monitoring. ✅ Before I start, one quick question: Do you want me to handle the full PCB fabrication and lab testing coordination or just deliver the design files and simulation results for your in-house validation? If you share that, we can align quickly and move forward. Best regards, Prat PCB Must Innovations
$500 USD på 4 dage
6,4
6,4

─── ⚡⭐⋆☆⋆⭐⚡ ─── Ciao, Cliente Sono un ingegnere senior di elettronica di potenza ed ESP32 che ha prodotto hardware di commutazione ad alta corrente da 230 V con ampi margini di sicurezza e termici. Dai un'occhiata al mio precedente progetto ESP32: https://www.freelancer.com/projects/embedded-systems/OTA-Dual-Bank-STM-Update/proposals Utilizzo Altium Designer o KiCad più LTspice, PLECS e controlli di perdite termiche e di rame per convalidare percorsi da 30 A prima della fabbricazione. Ho trasformato prototipi surriscaldati in schede da 4 a 6 strati pronte per la produzione con rame da 3 once, isolamento pulito e piani di test di carico ripetibili. Il tuo obiettivo è un vero e proprio commutatore da 4, 8 o 12 uscite 230 V da 16 a 30 A, testato in ufficio, con controllo remoto ESP32, telemetria, allarmi e una versione JLCPCB pronta all'uso supportata da simulazioni affidabili. Quindi, farò quanto segue: Verificherò i tuoi schemi, calcoli, registri termici e tracce di test, quindi bloccherò la progettazione di commutazione, rilevamento, protezione, isolamento e allarme con report di simulazione. Consegnerò il pacchetto JLCPCB completo, più il firmware ESP32 e le fasi dei test di laboratorio, quindi coordinerò la realizzazione e il supporto dei 3 PCB per superare i controlli di isolamento e di 30 A. Cordiali saluti, Siva
$650 USD på 6 dage
3,6
3,6

Hello, I went through your project carefully, and the core challenge is clear: creating three real PCBs that meet your high standards for a complex power-switching circuit. This isn’t a surface-level task , it needs someone who understands embedded systems and PCB design intricately and can execute without hand-holding. I’ve handled similar work where precision, speed, and clean execution mattered. My approach is straightforward: I'll leverage industry-leading software like Altium Designer to ensure optimal thermal analysis and signal integrity while seamlessly integrating the ESP32 firmware with robust remote control and monitoring capabilities. No guesswork, no bloated process, just results that hold up when reviewed. If this aligns, I can start immediately and deliver the testing-ready PCBs within 6 weeks. One quick question before I proceed: could you share any specific performance benchmarks you have in mind for the circuit? Best regards, Muskan
$250 USD på 2 dage
3,3
3,3

Drawing on a successful decade-long career in Electrical Engineering, I am confident in my ability to tackle the complexities of your power switching circuit project. My extensive skills and experience cover all aspects necessary for delivering on both the hardware and software requirements you've detailed extensively. Firstly, my expertise in circuit design and PCB layout, coupled with my proficiency in Altium Designer and Kicad, guarantee utmost precision for your multicore PCB designs. On the programming front, I’m a veteran when it comes to working with the ESP32 IDE, making me fluent in developing firmware that integrates remote control, real-time monitoring and alarm systems - this aligns perfectly with your project needs. Moreover, I have hands-on experience with energy-efficient power switching devices and conducting thermal analyses- useful for meeting your minimum loss requirement. My work will include thermal, current and transient simulations culminating in a comprehensive report to ensure production readiness. I look forward to engaging with your detailed documentation that includes valuable thermal measurements and test logs.
$250 USD på 7 dage
3,5
3,5

Hello, Please review my portfolio first — it includes **high-current power switching boards, ESP32-based control systems, and multi-layer production designs**. I understand the requirement: converting your existing prototypes, measurements, and schematics into a **reliable final system** capable of switching a **230V line (16–30A) to multiple outputs**, with **high efficiency, safe switching under load, and integrated ESP32 control**. The design will focus on **robust power routing, thermal management, protection circuits, and stable operation under continuous 30A load**. I will develop a **4–6 layer PCB optimized for 3oz copper (JLCPCB)**, perform **thermal and current simulations**, and implement an **ESP32 firmware** that supports remote control, monitoring, and alarm functionality. The goal is a **production-ready design that passes load testing, insulation checks, and full system verification**. Deliverables include **final schematics, optimized BOM, manufacturing-ready PCB files (Gerber, stack-up, pick-and-place), simulation reports, working ESP32 firmware, and lab testing guidelines**. Ready to review your existing prototypes and documentation to move quickly toward a tested final design.
$430 USD på 7 dage
3,4
3,4

Hi, My name is Leonid, an experienced RF and electronics design engineer based in Ukraine. I've spent a significant portion of my career designing efficient and high-performing PCBs with a keen eye for optimizing energy usage and component protection. Moreover, my expertise aligns perfectly with your project needs - ranging from Altium Designer software proficiency to thermal analysis and signal integrity verification. Comprehending the importance of turning existing prototypes into a functional circuit in line with your requirements, I pledge to not only execute it efficiently but ensure thorough documentation through simulation reports as well. As an added value, I’m also well-versed in ESP32 firmware development - adeptly configuring remote control, real-time monitoring, and alarm systems as per your specifications. Overall, given our mutual interests in precision switching, component protection, and using “best-in-class” design tools – I believe our collaboration would undeniably yield the desired outcome. Let’s create an efficient power switching circuit that surpasses your expectations together. Best regards, Leonid.Y
$500 USD på 5 dage
3,4
3,4

⭐⭐⭐⭐⭐ Understood — you need real hardware, not a virtual design. I can take your existing prototypes (schematics + calcs + thermal logs) and turn them into a production-ready solution and have 3 assembled PCBs built (JLCPCB, 3oz copper, 4–6 layers) for your office load testing before final acceptance. My approach: Design review + architecture lock Confirm switching topology (relay/contactor/SSR/triac), load types, inrush, and protection strategy so we hit 30A continuous without hotspots. Simulation-driven redesign Power dissipation + copper/thermal, transient/inrush, snubbers/TVS/MOV, current sensing, isolation/creepage/clearance, and layout rules for mains. PCB + manufacturing package (JLCPCB) Schematics, BOM optimized for availability, 4/6-layer layout with proper segregation, Gerbers/CPL/PNP/stack-up notes. ESP32 firmware Remote control + telemetry + alarms (MQTT/HTTPS or your preference), watchdog/brownout handling, OTA-ready structure if desired. Build 3 units Order through JLCPCB (PCB+PCBA) and ship 3 boards to you with bring-up + test instructions. Key questions (so we don’t waste a cycle): • Are you switching outputs with mechanical relays/contactors or solid-state? • Load type: resistive heaters, motors, SMPS, mixed? Any high inrush? • Do you need per-output current measurement, or total line only? • Target certifications (CE/IEC) or internal standard only for now? I’m ready to start as soon as you share the prototype package.
$500 USD på 7 dage
3,0
3,0

Hello. I have extensive experience designing high-performance, power-efficient systems that demand precision and reliability, especially for projects involving high-current switching and embedded firmware. With your detailed schematics, calculations, and test logs, I am confident in transforming this into a robust final solution. I specialize in multilayer PCB design (4-6 layers, with JLCPCB production standards) and have a deep understanding of thermal analysis, signal integrity, and power simulations. Utilizing tools like Altium Designer and KiCad, I will ensure that the PCB is not only production-ready but also optimized for thermal and electrical performance, ensuring your 30A continuous load test and insulation verification pass with ease. Additionally, I will deliver the ESP32 firmware for remote control, telemetry, and alarm systems, ensuring seamless integration and user-friendly functionality. My aim is to provide a solution that meets your exact requirements, with detailed simulation reports and clear documentation for testing. Let’s get started—I'm ready to begin as soon as you're ready to proceed, and I’m confident that we can achieve your goal promptly and efficiently. Best regards, Manoj.
$700 USD på 7 dage
2,8
2,8

Hi, I am a senior electronics engineer with extensive experience in high-power PCB design and ESP32 firmware development. I can transform your existing schematics and test logs into a production-ready 4 or 6-layer board optimized for 30 A continuous loads using 3oz copper. My workflow includes rigorous thermal and power integrity simulations to ensure maximum efficiency and safety before we hit the manufacturing stage. I am fully prepared to deliver the firmware, hardware files, and simulation reports required to meet your testing standards. I am ready to review your current documentation and start the optimization process immediately. Best regards
$550 USD på 4 dage
1,9
1,9

✅✅✅ Senior Power Electronics & ESP32 System Engineer (230V / 30A) ✅✅✅ Hi there, I design high-current AC switching systems with thermal modeling, protection strategy, and multilayer PCB layouts for reliable 30A continuous operation. My experience includes ESP32-controlled power stages, efficiency optimization, isolation discipline, and validated simulations before fabrication. My approach is to review your prototypes and measurements, optimize the switching topology (SSR/triac/relay hybrid if justified), implement 4–6 layer layout with 3oz copper, controlled creepage/clearance, and perform thermal + transient simulations before JLCPCB release. Firmware will include remote control, telemetry, alarms, and safe fault handling. I am ready to start immediately. Best regards
$250 USD på 3 dage
2,7
2,7

Hi, there! With over 10 years of experience in Electronics and Microcontroller programming, I have successfully completed 50+ Desktop/Mobile applications and Embedded software projects. I understand your requirement for an Efficient Power Switching Circuit with an ESP32 controller. I am confident in providing a professional solution that meets your technical specifications and expectations. I am keen to discuss your project further and explore how I can assist you in achieving your desired outcomes. Let's connect in chat to delve deeper into the details of your project. Your detailed project description and technical requirements align well with my expertise, and I am excited about the opportunity to collaborate with you. Thanks!
$530 USD på 7 dage
0,0
0,0

Hello, With over 15 years of experience, I'm confident that my team and I are well-equipped to deliver an exceptional outcome on your project. Our forte lies in a wide range of electrical engineering work, including the precise power switching solution you require with ESP32 firmware integration. We've effectively worked with STM32 and ESP-IDF development environments before, making us intimately familiar with the interface your project demands. Safety is at the forefront of our approach. We're proficient in creating hardware designs that guarantee component protection while maximizing energy efficiency. Signal integrity verification, credible power simulations, and thermal analysis will be prioritized by employing renowned design software such as Altium Designer or KiCad. The multilayer PCB layout will undergo thorough testing to ensure it meets all your exacting standards. Moreover, we spotlessly execute projects providing transparent timelines and strategies. We aim to document each process comprehensively with robust simulation reports (thermal, current, transients) and precise lab testing instructions. Additionally, we understand the importance of meeting deadlines and adhering to monetary commitments, which is why we fully appreciate your payment procedures. Let's work together to achieve a power-switching circuit that exceeds expectations! Thanks!
$250 USD på 5 dage
0,0
0,0

ESP32-BASED HIGH-POWER PCB DESIGN EXPERT NEEDED Dear Client, You’re looking to transform your existing high-current switching prototypes into three fully functional, production-ready PCBs with integrated ESP32 control, real-time monitoring, and alarm systems. This aligns perfectly with my background in high-current power electronics, multilayer PCB design, thermal management, and embedded ESP32 systems. Here’s how I would approach your project: ✅ Consolidate your schematics and test data into a robust 4–6 layer PCB layout optimized for 30 A continuous current, with careful attention to thermal dissipation, copper thickness, and minimal voltage drop. ✅ Integrate high-efficiency switching, protection circuits, and precise load management while ensuring signal integrity and EMC compliance. I have 11+ years of experience in high-current power switching, multilayer PCB design and ESP32-based embedded control, delivering designs that pass rigorous load, insulation, and network functionality testing. Question: Are there specific switching topologies, protection components, or layout constraints you prefer for the high-current sections, or is full design freedom allowed? I’d be happy to review your existing prototypes, logs, and measurements to finalize a compact, efficient, and fully tested solution ready for immediate JLCPCB production. Best regards, Avi Gupta
$500 USD på 4 dage
0,0
0,0

Hello, Your 230V / 30A switching project is a serious high-power design, not a hobby build, and that’s exactly why it caught my attention. Designing reliable multi-output mains switching at 30A continuous requires correct copper strategy, thermal control, isolation discipline, and safe switching under load. I have experience working with high-current PCB layouts and ESP32-based control systems, and I am confident I can turn your existing prototypes and data into a clean, production-ready solution. I am comfortable designing a 4–6 layer board with 3oz copper for JLCPCB, running proper thermal and current validation before fabrication, and delivering structured ESP32 firmware with remote control, monitoring, and protection logic. I understand that three real PCBs must be manufactured and tested before acceptance, and I am fully aligned with that requirement. If you share your schematics and measurements, I can review them immediately and propose a clear technical direction and timeline. I’m ready to start and move this toward a robust, test-passing final design
$280 USD på 10 dage
0,0
0,0

With extensive experience as an Electrical Engineer and a solid background in Embedded Systems, I am confident that I can provide the expertise you need for this power switching project. I have a wealth of knowledge and competency spanning over 5 years in designing, programming, and simulating- perfectly aligning with your project requirements. Not only am I proficient in using trusted software such as Altium Designer and KiCad for accurate simulations, but I also have hands-on PCB design skills suitable for JLCPCB production. Moreover, my meticulous approach means I pay strict attention to detail, delivering optimized schematics with thoroughly curated bill of materials, simulation reports (thermal, current, transients) and a tested firmware fulfilling your expectations. Aside from technical capabilities, my commitment to high-quality work aligns with your requirement for real PCBs rather than virtual projects. I also understand the paramount importance of precision in power switching under load; that's why I guarantee energy efficiency, component protection, and meticulous thermal analysis to ensure optimal performance. Additionally, proficiency in ESP32 IDE ensures the developed firmware for integrated remote control and real-time monitoring will be top-notch. Therefore, with me on board there is no compromise on quality or functionality. Let's get started!
$1.500 USD på 15 dage
0,0
0,0

Cassina De Pecchi, Italy
Betalingsmetode verificeret
Medlem siden aug. 19, 2015
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