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I already have a working circuit built around an STM32G031, a power MOSFET and a 2-cell Li-ion pack. Now I want to add a USB Type-C charging with PD front-end so the battery can be charged, and then we need support to make a PCB for the device. You would have to make a price proposal for the required tasks. Deliverables • Final schematics including charging circuits • PCB layout files and generated Gerbers/NC drill files • BOM with manufacturer part numbers and suggested alternates • Brief design notes covering the added circuits design. We provide and code the firmware on the MCU Acceptance criteria We'll place a small PCB order to check PCB, parts placement and test the device.
Project ID: 40732848
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47 freelancers are bidding on average €29 EUR/hour for this job

With extensive experience in complete IoT product engineering and a solid background in firmware development, I am confident that I am the best fit for your Controlled Heater USB-C Charge & PCB Design project. You've already done exceptionally well by building a working circuit around an STM32G031 - let me help take it to the next level. Having worked with various microcontrollers including the STM32, Raspberry Pi, and Arduino and with great proficiency in Embedded C/C++, I guarantee coding expertise that optimizes performance, enhances communication abilities and maintains low-power reliability. My skills extend above and beyond PCB design – they include RF hardware, and even FPGA development using Verilog/VHDL. My value-added proposition goes beyond the defined deliverables as my end-to-end product development workflow extends from ideation all the way to final launch. Beyond just electrical engineering, I also possess mechanical CAD skills allowing me to envision your designs from different angles. Trusting my skillset and track record, place confidence in my ability to meet or exceed your acceptance criteria and turn your ideas into quality-products. Allow us to test the device through a small PCB order, work on parts placement, and make any necessary tests before entering production.
€16 EUR in 40 days
8.4
8.4

Hi, I have designed battery charing circuit for 2-cell Li-ion pack for a racing car aligment device. I used MCP73833. It support thermal monitor as well. It could be a very good candidate for your project. I have schematic and PCB design so could be integreated to your design quickly. What design tool do you use? I use Altium Designer. Best, Oleksandr
€16 EUR in 40 days
8.4
8.4

With a rich and diverse background spanning multiple relevant areas including Circuit Design, Embedded Systems and Electronics, I’m exceedingly well-suited to bring your vision for a Controlled Heater USB-C Charger with PCB design to life. I have extensive experience working with STM32 technology and can thrive in fast-paced environments where I'm tasked with developing innovative solutions. Previously, I've honed my design skills by working on digital motor control, renewable energy technologies as well as power electronis systems, among others. In addition to technical aptitude in schematic design using Altium and hardware simulations done in MATLAB, I’ve also built a solid expertise in the realm of PCB layout - an area that proves critical to your project. My proficiency in offering BOMs with manufacturer part numbers and suggested alternates will ensure convenient procurement. To ensure utmost customer satisfaction, I propopse that our contract includes a small PCB order for us to check parts placement and test the device early on in the project. We could also utilize my skills to code the firmware on the MCUs for improved coordination. Simply put, my versatile set of skills would make me an ideal fit for not only this involement but also any subsequent projects you may have.
€12 EUR in 20 days
7.5
7.5

Your STM32G031-based device with a 2-cell Li-ion pack and a USB-C PD front-end is a great target for a clean, production-ready PCB. I recently delivered USB-C PD charging integration for a STM32-based product, including full schematics and Gerbers on a 2-layer board. Portfolio: https://www.freelancer.com/u/markoa7 - Design USB-C PD front-end with CC logic, protection, and battery charging control. - Provide final schematics, PCB layout, Gerbers/NC drill files, and BOM with parts and alternates. - Supply concise design notes to guide fabrication and testing. Clarifying question: Should PD support cover USB-C PD 2.x, 3.x, and are you okay with an external PD controller or want CC logic integrated on-board? Happy to hop on a quick call to discuss Marko Aleksic
€35 EUR in 39 days
6.9
6.9

As a seasoned Electrical/Electronics Engineer and meticulous PCB Designer for the better part of a decade, I am confident I can deliver on your Controlled Heater USB-C Charged & PCB Design project. By leveraging my expertise in Eagle, Altium, KiCAD, and EasyEDA (I am even a certified EasyEDA designer), I can assure you of precise schematics and an optimized PCB layout that ticks all the boxes. I appreciate your requirement of incorporating USB Type-C charging with PD front-end in your existing circuitry design. With a deep proficiency in Circuit Design, Electronics and Embedded Systems – including working with the STM32 microcontroller – I am well-equipped to handle this task adeptly, ensuring efficient charging capabilities that match your specified parameters. Additionally, my skills extend beyond just design work: I'm passionate about problem-solving and after familiarizing myself with the intricacies of your project, I will provide a comprehensive BOM that encompasses manufacturer part numbers along with any suggested alternatives. In line with your delivery criteria, I am more than happy to assist in testing the device through an initial small PCB order. Let's make things happen together - let's discuss your project!
€9 EUR in 40 days
6.7
6.7

Hi, I’m an Electronics/PCB Design Engineer with 8+ years of experience in Li-ion power systems, USB-C, battery charging, STM32, and production PCB design. I can integrate the USB Type-C PD front-end and suitable 2-cell Li-ion charging/protection circuitry into your existing STM32G031 design, then complete the PCB layout and manufacturing files. I’ll provide the final schematic, PCB, Gerbers/NC drill, BOM with manufacturer part numbers and alternates, and concise design notes. I can also support the first PCB build, assembly review, and testing to resolve any issues before production. I can provide a price proposal based on the existing circuit and requirements.
€9 EUR in 40 days
6.6
6.6

Hi, I can integrate USB-C PD charging into your existing STM32G031 + MOSFET + 2S Li-ion design and handle the complete hardware/PCB side. I’ll update the schematic, design the charging/protection and PD section, optimize the PCB, and provide production-ready Gerbers, NC drill files, and BOM with manufacturer P/Ns and alternates. The project price would be around EUR 150 : EUR 300, depending on the remaining features and details we discuss. I’ll also support you through the first JLCPCB order, assembly, testing, and any necessary refinements afterward, so you don’t have to worry about the prototype stage. You provide the STM32 firmware; I’ll take care of the hardware from design to tested prototype.
€9 EUR in 40 days
5.6
5.6

Hello, My goal is to make your project simple and deliver the complete hardware design according to your requirements. I can use my 15+ years of experience in electronics and embedded hardware development to complete this project. For your STM32G031 controlled heater, I can add the USB Type-C with PD front-end required to safely charge the 2-cell Li-ion battery, integrate it with your existing circuit, and then develop the PCB. At the end of the project, you will get: * Full circuit/schematic design * USB Type-C PD charging circuit for the 2-cell Li-ion battery * Full PCB design and layout * BOM with manufacturer part numbers and suitable alternatives from LCSC, Mouser, etc. * Gerber and NC drill files ready for PCB manufacturing * Brief design notes covering the added charging circuit * Support during the prototype PCB stage if required Since you already have a working STM32G031, MOSFET, and battery circuit, I can work from your existing design and focus on adding the charging section and producing a complete manufacturing-ready PCB. Let's discuss your project in chat so I can review the existing circuit and provide a clear price proposal for the required tasks. Best regards, Hamza
€6 EUR in 40 days
5.4
5.4

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: Antenna Design (CST, HFSS) 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.
€15 EUR in 40 days
5.9
5.9

As an experienced freelancer with a strong background in Circuit Design, Electronics, and PCB Layout, I am convinced that I am uniquely qualified to complete your project. Over the years, I have perfected my ability to deliver high-quality PCB layouts and circuit designs that meet or exceed expectations. In line with your project, I have keen knowledge and expertise in using STM32G031, power MOSFET, and 2-cell Li-ion pack to create efficient working solutions. I am also adept at incorporating and designing USB Type-C charging with PD front-end that will ensure optimal battery charging for your device.
€7 EUR in 2 days
4.8
4.8

Hello I am a Full Stack Engineer and PCB Designer with 10 years of experience, providing STM32, USB-C PD, Li-ion charging, power MOSFETs, PCB design, and production files. In my opinion, I would integrate a reliable USB-C PD charging stage with the existing 2-cell Li-ion system while keeping the STM32G031 and heater control unchanged. The PCB will be designed for safe charging, proper power routing, thermal management, and easy assembly. This project is very similar to my previous works. I have experience with STM32-based products, battery charging circuits, MOSFET power control, and compact PCB designs. The most important skill is power and charging circuit design. I will apply it to the USB-C PD input, 2S battery charging, protection, and heater power path. So, I will divide your project into three major steps. 1️⃣ Review the existing circuit and define the USB-C charging architecture. 2️⃣ Complete the schematic and PCB layout with suitable components and footprints. 3️⃣ Check the design, prepare BOM, Gerbers, NC drill, and support prototype testing. Via private chatting or meeting, I will provide the creative idea and good tech solution for your project. Best regards. Maksym
€25 EUR in 40 days
5.0
5.0

Hello, I’m a Senior Electronics & Embedded Systems Engineer with a Master’s degree in Electrical/Electronics Engineering and over 8 years of hands-on experience in electronics design, embedded systems, and power electronics. I can help you take your project from concept and schematic design through PCB development, firmware, prototyping, debugging, and final optimization. My core expertise includes: • Schematic & PCB Design – from simple boards to complex multilayer PCBs, including component selection, layout, grounding, power distribution, and design for manufacturability • Embedded Systems & Firmware – STM32, ESP32, and other microcontroller platforms • Digital & FPGA Design – digital logic, FPGA implementation, and VHDL development • Power Electronics – DC-DC converters, DC-AC inverters, AC-DC rectifiers, power supplies, and control circuits • Hardware Debugging & Optimization – troubleshooting, signal integrity, EMI/EMC considerations, thermal issues, and performance optimization • Simulation & Validation – circuit simulation, prototype testing, measurements, and design verification You can also review my portfolio to see examples of my previous work and the level of engineering involved in my projects.
€10 EUR in 40 days
4.8
4.8

Hi, Greetings! I am interested in working on your project. Please share the design details, specifications, and project requirements so we can discuss them further. I look forward to working with you. Thank you. Shivkant Verma
€9 EUR in 40 days
4.7
4.7

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.
€25 EUR in 40 days
5.0
5.0

I already have a working circuit built around an STM32G031, a power MOSFET and a 2-cell Li-ion pack. Now I want to add a USB Type-C charging with PD front-end so the battery can be charged, and then we need support to make a PCB for the device. You would have to make a price proposal for the required tasks. Deliverables • Final schematics including charging circuits • PCB layout files and generated Gerbers/NC drill files • BOM with manufacturer part numbers and suggested alternates • Brief design notes covering the added circuits design. We provide and code the firmware on the MCU Acceptance criteria We'll place a small PCB order to check PCB, parts placement and test the device.
€9 EUR in 40 days
4.7
4.7

Hi, I can help with this. I have extensive experience designing USB-C charging and power-management circuits for Li-ion batteries, including 2S systems and STM32-based hardware. For the USB-C PD front-end, I can propose either a standalone PD solution, a programmable PD controller, or a hybrid approach, depending on the required charging behavior, flexibility, cost, and available space. I can handle the complete hardware design, including the charging circuit, schematic updates, PCB layout, Gerber/NC drill files, BOM, and design notes. I can also build and test the prototype to verify the USB-C charging and complete system operation before the small PCB production run. Since you provide the MCU firmware, I will focus on the hardware implementation and make sure the design is ready for manufacturing and testing. Best regards, Hendra
€15 EUR in 40 days
4.5
4.5

Adding a USB-C PD front-end to a live STM32G031 design is precision work — the charger IC, PD controller, and MOSFET path all have to coexist without disturbing your existing rail. → Comparable work: a custom ESP32-C3 board with USB-C power and an integrated charging front-end, shipped to a paying client. → You get final schematics with the PD charging circuit, PCB layout, Gerbers, NC drill, and a BOM with MPNs and alternates. → I handle schematic, layout, and 3D enclosure in-house, so the board drops into your housing cleanly. A Cost will be 80 EUR.
€8 EUR in 10 days
3.5
3.5

Hello, I’m a Chinese embedded hardware/firmware engineer with strong experience in STM32 systems, power electronics, Li-ion powered products, PCB design, JLCPCB manufacturing, prototype bring-up, and production support. I can review your existing STM32G031/MOSFET/2S Li-ion design and add a proper USB Type-C PD charging architecture, including PD sink negotiation, 2-cell charging, protection and power-path considerations where required. I will then complete the PCB design with attention to charging-current paths, thermal performance, grounding, USB-C protection, component availability, DFM, and compact placement. Deliverables will include: • Final schematic • PCB source files • Gerbers/NC drill • BOM with MPNs and alternates • Design notes for the charging/PD section • Support during first PCB assembly and testing I also have extensive hands-on experience with PCB manufacturing and PCBA in China, including JLCPCB ordering and board bring-up. Please send the current schematic, PCB/mechanical constraints, battery specifications, and required charging time/power. Best regards, ShengLin
€15 EUR in 40 days
3.5
3.5

→ I've designed USB-C PD charging with 2-cell Li-ion management on several STM32 projects. → You'll get final schematics, PCB layout with Gerbers/NC drill, BOM with alternates, and brief design notes. → I handle PCB design and firmware myself, so the charging circuit will match your existing board cleanly. → Straight up, this would run around 30 Euro Happy to have a straightforward chat about the scope and the PD spec you're targeting.
€6 EUR in 40 days
3.0
3.0

As experienced RF and Electronics Engineers, we are uniquely qualified to take on your USB-C charger project. Our mastery in Circuit Design, Embedded Systems Development and High-Frequency PCB Design aligns perfectly with your needs for adding a USB Type-C charging unit and creating PCB layouts for your controlled heater device. Moreover, our proficiency in using systems like KiCad, Proteus and Altium Designer means we can generate precise PCB layouts and associated files like Gerbers/NC drills with ease. We guarantee the finalized schematics you receive will have all the necessary charging circuits accurately integrated. We will also provide a comprehensive Bill of Materials (BOM) with manufacturer part numbers and suggested alternates for any hard-to-acquire components. With your acceptance criteria in mind, we are prepared to go the extra mile and order a small scale production of the PCB to not only analyze its quality but also test the effectiveness of our device. Lastly, given our dedication to staying current with emerging industry knowledge and standards, we can assure you that our work will reflect precise, innovative thinking that keeps pace with ever-evolving USB technologies. Partnering with us means a guarantee of top-tier solutions delivered within agreed timelines.
€9 EUR in 40 days
2.5
2.5

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