STM32-Based UPS Redesign and Firmware Development

@macroenergy

My name is Metin, and I am an experienced embedded hardware and firmware engineer specializing in STM32 microcontrollers. Your project is right up my alley, as I have a deep understanding of circuit design, microcontroller programming (including PWM generation), PCB layout, and testing. I would be the perfect fit for your UPS redesign due to my extensive experience with similar projects. Throughout my career, I have developed power electronics solutions including motor drives, DC-DC converters, solar inverters, and uninterruptible power supplies. This has given me the knowledge and skills necessary to reverse engineer your existing working PCB, design a new one for production with complete documentation, and develop the STM32 firmware from scratch. Regarding the timeline and deliverables, rest assured that I am committed to delivering high-quality results within the agreed timeframe. Given the complexity of this project, I estimate it will require X weeks from start to finish. At the end of the process, you can expect comprehensive deliverables including schematic files, PCB layout files, Gerber files, BOM with component specifications, STM32 firmware source code and compiled HEX file, wiring diagram plus successful testing procedures.

@amelectronics

I am a skilled and reliable Embedded Systems Engineer with over 6 years of hands-on experience in Arduino, ESP32/ESP8266, and microcontroller-based development. I specialize in designing efficient, stable, and scalable embedded solutions, turning ideas into fully functional hardware-software systems. I have a strong background in electronics, sensors, communication protocols (UART, I2C, SPI, MQTT, WiFi, BLE), and real-time embedded systems. My development approach focuses on clean, well-structured, and well-documented firmware, ensuring long-term reliability and easy maintenance. I also provide thorough testing, debugging, and performance optimization, including power efficiency improvements where required. I am a detail-oriented engineer with strong problem-solving skills and extensive experience in hardware debugging and firmware optimization. Beyond technical expertise, I value clear communication, meeting deadlines, and maintaining high client satisfaction. I work closely with clients to fully understand project requirements and deliver high-quality results. Pricing is flexible and can be discussed based on project scope and complexity. I am open to both short-term and long-term projects. Let’s work together to build a professional, reliable, and efficient embedded system for your needs.

@mairajali11

Drawing on my substantial experience in UPS/Inverter design and my expertise in relevant areas such as Circuit Design, Electrical Engineering, Electronics, Microcontroller programming, and PCB Layout (using software like EasyEDA and Altium), I am confident that I am the ideal fit for your project. In line with your project description, I have valuable previous experiences which include reverse-engineering, schematic creation, double-layer PCB design (preferably top-side SMD components placement), STM32 firmware development, and thorough testing. One of the major advantages of choosing me is my meticulousness. My eagle-eyed attention to detail, combined with a solution-oriented approach and an unwavering commitment to quality and reliability, makes me not only adept at designing intricate hardware systems leveraging STM32, but also skilled in producing exhaustive documentation like working diagrams and complete BOMs. I completely understand your requirement to develop a stable and production-ready UPS board within a reasonable timeline. As a top-rated power electronics freelancer with proven track record of finishing projects on time and with utmost client satisfaction, I assure you that I will give your project the focused attention it deserves

@cesur135

With my diverse background in industrial automation and electrical engineering, I am well-prepared to deliver exceptional results for your UPS redesign project. My mastery in Siemens TIA Portal, Simatic Manager, and E Plan P8 aligns perfectly with the technical requirements for this task. In my numerous projects involving system control using PLC programs and SCADA software, I have consistently demonstrated my ability to design and implement intricate systems successfully. This included drawing on various pieces of equipment and devising robust automation scenarios designed around specific industrial needs—a skill-set directly applicable to developing an intelligent UPS logic. On top of my extensive experience, I am quick-to-learn, detail-oriented, and possess an uncanny ability to identify crucial opportunities for optimization—even when working on a preexisting structure. Given that you already have a working board, my reverse engineering skills combined with my capability to design and debug embedded systems give me a unique edge—an opportunity that has positive time-saving implications for any manufacturing goal.

@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 so we can discuss further on your project I look Forward to working with you. Best Regards, Abdur-Rafiq

@ahmedy607

Hello, Please feel free to review my portfolio first — power electronics, inverter control systems, and STM32-based mixed-signal boards are the primary type of projects I work on. I have strong experience with transformer-based inverter systems, PWM power control, protection design, and production-ready PCB development. For your **600VA Pure Sine Wave Offline UPS**, I can support the full scope: • Reverse engineering of the existing PCB and creation of clean, documented schematics • Redesign into a production-ready 2-layer power PCB with proper creepage, grounding, and thermal considerations • STM32 firmware development for sine PWM generation, automatic changeover, battery charging logic, and protections • Optimization for reliability, EMI reduction, and safe AC power handling • Complete manufacturing package (Gerbers, BOM, Pick & Place, wiring diagram, and testing procedure) **Relevant experience:** Industrial power control boards, resonant and inverter-driven systems, STM32 control logic, and high-voltage mixed-signal layouts prepared for manufacturing. **Estimated timeline:** First engineering draft: 7–10 days Full validated revision: depends on testing feedback and iteration cycle. Quotation can be discussed based on reverse-engineering complexity and firmware scope. Looking forward to discussing the project details. Best regards, Ahmed

@santelerj

✅✅✅ STM32 Power Electronics & UPS Design Engineer ✅✅✅ Hi there, I have hands-on experience designing low-frequency transformer-based inverters and STM32-controlled power systems, including sine PWM generation, battery charging control, and protection logic. I’ve delivered production-ready double-layer PCBs with full documentation and stable embedded firmware for power conversion applications. My approach is to first reverse engineer and validate the existing topology, then redesign the schematic and PCB with improved layout separation (power/control), thermal management, and manufacturability. Firmware on STM32G030 will implement sine PWM, changeover logic, battery management, protections, and timed shutdown with structured, well-documented code. A few questions: What switching devices are currently used (MOSFET/IGBT)? Is the charger linear or SMPS-based? Do you require grid synchronization or standalone inverter only? I am ready to start immediately. Best regards

@lokdeshwark

As a seasoned Electrical Engineer with a predilection for Hardware and Firmware Development, I am confident that my extensive experience in UPS design and STM32 programming aligns perfectly with your project needs. I have strong skills in reverse engineering, schematic creation, PCB design, and STM32 firmware development - which means I can not only re-design your existing board but also develop a stable pure sine wave UPS tailored exactly to your requirements. In the past, I've successfully executed projects very similar to what you're looking for where high precision and reliability are indispensable. My work history includes detailed documentation creation, SMD components placement that smo oths PCBs, battery control, and fault detection systems among others. All of these will be crucial in ensuring the production-readiness of your UPS boards. Estimably realizable project completion within a reasonable timeline is one of my distinguishing features as an EFH Engineer. Equipped with modern tools and workflows, I can assure you clean and efficient results production-ready results— Complete Schematics & BOMs; Gerber & PnP Files; Firmware & HEX File— all in compliance with power PCB standards.

@Sh4h11d

Hello, I have reviewed your requirement for a 600VA transformer-based pure sine wave offline UPS using STM32G030K6T6. I have hands-on experience in UPS/Inverter hardware & STM32 firmware development and can deliver a production-ready redesign based on your existing working board. Experience & Skills Pure sine wave UPS/Inverter design (500VA–1kVA) STM32 PWM/SPWM, ADC, timers & protection logic Reverse engineering of PCBs Battery charging, low-battery cutoff, auto changeover Power PCB schematic & layout (double layer, SMD focused) Scope Covered Reverse engineering of existing PCB Complete schematic & PCB redesign STM32 firmware development Testing & debugging support Deliverables Schematics, PCB & Gerbers, BOM, Pick & Place, firmware source + HEX, wiring diagram, and testing document. Timeline 3–4 weeks (end-to-end) Quotation Can be finalized after reviewing the existing board and functionality. I work only on stable, manufacturing-ready power designs and would be happy to discuss details. Best regards, Shahid Embedded Hardware & Firmware Engineer

@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