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Project: Hybrid Multi-Source Energy Prototype (Micro Build – Ongoing) I’m developing a hybrid energy system designed to combine multiple environmental inputs, including: - Solar - Wind - Hydro (if applicable) - Thermal energy - Potential energy/force absorption (future integration) The system is built around a 48V DC bus with LiFePO4 storage and DC/AC outputs. Phase 1 & 2 designs (schematics + BOM) are already completed. I’m looking for someone to help refine and build a working prototype. --- Budget / Structure - Tight budget — open to a micro prototype (V1) approach - Start with a $100 milestone (design review + initial planning) - Continue with $100 per milestone, paid based on completed deliverables - Please include: - Your total estimated cost to complete a working prototype - A clear timeline with phases and duration --- Scope of Work - Review existing schematics and BOM - Refine for real-world implementation - Assist with or fully build a working prototype - Ensure system stability across multiple input sources - Provide practical guidance during assembly --- Requirements - Hands-on experience with: - DC systems - LiFePO4 batteries - Converters / inverters - Off-grid or hybrid energy systems - Ability to take schematics and turn them into a functional system - Strong troubleshooting and real-world build experience --- Deliverables - Finalized BOM (exact part numbers, quantities, verified ratings) - Build-ready wiring / connection plan - Functional prototype (or guided build process) - Video proof demonstrating: - system functionality - live operation - explanation of energy flow and components - Must be comfortable shipping the unit or components if required --- Additional Needs (Important) - Support in creating visual/video material suitable for Kickstarter (clear demonstration of system function and concept) --- Nice to Have (Future Phases) - Experience with: - thermal or alternative energy harvesting - energy capture from motion/force - smart systems / embedded tech - navigation systems or autonomous control - Interest in working toward more advanced system concepts (long-term evolution) --- Important - This is a long-term, ongoing project, not a one-time task - All communication and payments must remain on-platform - Generic or automated proposals will be ignored - Only apply if you are serious about building and delivering real results --- When applying, include: 1. Estimated total cost to complete a working prototype 2. Timeline with clear milestones 3. What you will deliver in the first $100 milestone 4. Relevant past projects (photos/videos strongly preferred) --- Looking for someone who can execute and build, not just design.
Project ID: 40397765
22 proposals
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Active 6 days ago
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22 freelancers are bidding on average $669 USD for this job

With a comprehensive background in Electrical Engineering, I possess a unique skill set that makes me the perfect fit for your Multi-Source Energy System Prototype Development project. My expertise extends to Digital Motor Control, Analog Design, Electronic Design, Power Electronics which are all central to achieving your goals. One area I am particularly experienced in is designing renewable energy systems such as yours. I have previously implemented solutions like AC/DC and DC-DC converters, battery chargers and solar inverters that are relevant to your project. Additionally, my ability to design PCB using Altium and power board design skills would be instrumental in refining your existing schematics and BOM as well as creating the final BOM for your prototype. But what sets me apart from the pack is not just my technical abilities but my deep passion for putting them to use in the real world. I genuinely enjoy rolling up my sleeves, building and troubleshooting systems which is well-reflected in my history of hands-on projects. A great advantage of choosing me for this ongoing project lies in my long-term commitment to its success. Not only am I equipped with the skillset needed for future phases (alternative energy harvesting, motion/force energy capture etc.) but I'm keen on collaborating towards these advanced system concepts too.
$2,750 USD in 40 days
7.4
7.4

Hi there, I carefully read your project, and I can help you move from schematic to a real working hybrid energy prototype with a practical, build-focused approach. I’m Samuel Tshibangu, a mechatronics engineer with hands-on experience in DC systems, battery management (LiFePO4), power electronics, and real-world prototyping. I’ve worked on similar systems involving converters, energy control, and multi-source integration, so I can help you refine your design and actually make it work reliably. I’m comfortable working iteratively with tight budgets and milestone-based progress, focusing on testing, validation, and practical implementation—not just theory. Detailed review of your schematics and BOM Identification of risks (voltage/current handling, protection, stability) Proposed architecture improvements for real-world operation Clear next-step build plan I’m serious about execution and long-term collaboration, and I can support both the technical build and demonstration material. Feel free to send me a message. Best regards, Samuel Tshibangu
$505 USD in 1 day
6.3
6.3

Having come across your project on developing a Hybrid Multi-Source Energy Prototype, I can't help but feel like it was specifically tailored to my skill sets. I am Muhammad Awais from ZAWN Tech, a company that has helped startups and enterprises develop robust and scalable living operational system designs. We have a focus on not just design but also execution and building. My 10+ years of experience in IT & Engineering, with specialization in Electrical Engineering, Electronics, and PCB Layout speaks to your project's specific needs. At ZAWN Tech, we understand the importance of refining designs for real-world implementation — precisely what you require for your prototype. My familiarity with DC systems, LiFePO4 batteries, converters/inverters, and particularly hybrid energy systemsenable us to smoothly tackle this task while prioritizing stability across multiple inputs sources. Not only can I turn schematics into functional systems à la your requirement but also offer strong troubleshooting abilities based on my extensive experience. Regarding the milestones and budgeting structures, I've already crafted a clear plan tailored to your needs and will be happy to share it with you.
$1,000 USD in 20 days
6.0
6.0

Hello, I am PhD in electrical engineering with core research area of renewable energy systems design. I have a good experience of creating prototype of energy systems and their integration. 1. I can assist you with the design 2. Provide complete schematics and review them 3. Highlight exact equipment and parts needed for realistic model preparation 4. Help in design of controller for hybrid system flow Please let me know when can we start.
$700 USD in 7 days
5.4
5.4

Hello, Your project requires practical execution, not just theory—and that’s exactly where I focus. I have hands-on experience with 48V DC systems, LiFePO4 storage, hybrid inputs (solar/wind), and real-world prototyping. I can take your existing schematics and BOM and turn them into a stable, working system with proper load handling, protection, and efficiency optimization. For the first $100 milestone, I will perform a full design review, validate component ratings, identify risks, and deliver a refined BOM with exact parts plus a build-ready wiring plan. I’ll also outline the prototype architecture and testing approach to ensure smooth multi-source integration. Estimated total cost: $600–$900 depending on build complexity and sourcing. Timeline: 3–5 weeks (Review → Refinement → Build → Testing → Demo). I will support assembly or fully build, provide video proof, and assist with Kickstarter-ready visuals. Thanks, Asif.
$1,000 USD in 5 days
5.0
5.0

With a strong background in Electrical Engineering and Electronics, I specialize in turning intricate technical designs into tangible, functional prototypes. Particularly familiar with working on off-grid and hybrid energy systems, I can construct your multi-source energy prototype utilizing my experience with DC systems, LiFePO4 batteries, converters/inverters, and more. Aware that time is of the essence, I assure you that I can flawlessly rework your existing schematics and BOM for real-world implementation within the specified budget. In addition to my hardware capabilities, I possess a notable proficiency in software as well, making me an even stronger candidate for this project. Over the years, my team and I have harnessed our skills in PCB design and firmware development (specifically ESP32/STM32) which could prove crucial as we advance towards 'Nice to Have' future phases involving embedded tech or autonomous control.
$1,000 USD in 7 days
4.3
4.3

Best Hybrid Energy Prototype Development Partner! ⭐⭐⭐⭐⭐ Dear Client, The biggest risk in this project is not combining solar, wind, and battery storage. It is building a prototype that looks complete on paper but becomes unstable once multiple sources, converters, and LiFePO4 storage interact in the real system. That is where practical build experience matters. I would approach this by: 1. reviewing your existing schematics/BOM to identify weak points in source combining, battery protection, converter sizing, startup behavior, and fault handling 2. turning that into a build-ready wiring plan, corrected BOM, and phased prototype strategy that fits your budget 3. supporting the actual prototype build, troubleshooting, and demo/video proof so the result is something you can show, test, and evolve First $100 milestone: - design review - risk list - BOM corrections - clear prototype roadmap for V1 One key question: Do you already have the BMS, converters, and inverter selected, or should V1 include verification/replacement of those core blocks? Message me and I’ll outline the cleanest first step so this moves toward a real working prototype, not just another design revision. Best regards, Prat PCB Must Innovations
$100 USD in 7 days
6.4
6.4

Hello, I’ve reviewed your Hybrid Multi-Source Energy Prototype and it aligns closely with my expertise in embedded systems, DC power design, and real-world prototype development involving LiFePO4 storage and multi-source energy integration. I specialize in taking schematic-level designs and turning them into stable, buildable systems with proper power distribution, protection, and practical implementation for off-grid and hybrid architectures. Estimated cost for V1 working prototype: $1000~$1500 Timeline: 4–6 weeks (depending on component availability and iteration cycles) First $100 milestone deliverables: Full review of existing schematics & BOM Identification of design risks (power flow, stability, safety) Optimized architecture for 48V DC bus integration Improved/verified BOM with realistic part selection Build-ready wiring and system integration plan Relevant experience: LiFePO4 battery systems with BMS integration DC-DC / DC-AC conversion systems ESP32/STM32 embedded control systems Off-grid hybrid energy prototypes IoT monitoring and energy management systems I am comfortable supporting hands-on prototyping, debugging, and producing clear demonstration outputs suitable for investor/Kickstarter presentation. Looking forward to building this with you.
$1,000 USD in 7 days
3.9
3.9

Mechanical Design & Engineering Expertise: Reverse Engineering | Fabrication | DFM | 3D Printing | Concept Design | Product Development / Improvement I am a Mechanical Designer with over 8 years of experience turning complex ideas into functional, manufactured products. I focus on creating designs that aren’t just visually sound, but are technically optimized for real-world performance and efficient production. Software Proficiency: SolidWorks • Autodesk (AutoCAD, Fusion, Inventor) • Maya • Matlab • Rhino • Catia Best Regards, MOHAMED EWAIDA Senior Mechanical Designer
$1,000 USD in 7 days
2.8
2.8

The core challenge isn’t just refining schematics but delivering a resilient, real-world hybrid energy prototype that flawlessly integrates multiple inputs on a tight budget. I specialize in hands-on builds that transform design into reliable, scalable systems, ensuring your 48V DC bus with LiFePO4 storage operates seamlessly under varied environmental conditions. I will rigorously review your Phase 1 and 2 work, identify and correct practical issues, then execute the build with exact BOM finalization, wiring plans, and troubleshooting during assembly to guarantee stability and performance. Detailed video documentation will validate live operation, ready for Kickstarter. The first $100 milestone delivers a comprehensive design validation and step-by-step execution plan with firm timelines. What’s the earliest you can share your current schematics to kick off the critical design review and milestone planning?
$1,000 USD in 7 days
2.4
2.4

Hello, With a passion for complex projects and a specialized skill set in electrical engineering, I am thrilled at the prospect of working on your Multi-Source Energy System Prototype. My experience in managing Hybrid and Off-Grid energy systems aligns project perfectly with your needs. I have honed my expertise with DC systems, LiFePO4 batteries, Converters/inverters, as well as real-world build, system stability maintenance and efficient troubleshooting skills. As an experienced professional, my thorough review and refinement of your existing schematics and BOM will ensure the optimised performance of your system. Additionally, I'll offer practical guidance as we move forward to actual build ensuring stability across multiple input sources. My experience taking schematics and turning them into functional systems will be indispensable during this process. Finally, the future-focused nature of your project strongly resonates with my aspirations to explore alternative energy harvesting, smart systems, and embedded technology. This underscores why I consider this collaboration more than just a one-time task but rather a long-term professional bond focused on delivering quality results. With me on board, you can be rest assured that we will not only meet but exceed all your expectations so that we can eventually make a deeply impactful difference in the world of energy production! Thanks!
$10 USD in 4 days
0.0
0.0

You need a working prototype for a hybrid energy system that combines solar, wind, hydro, and thermal inputs, built around a 48V DC bus with LiFePO4 storage. I will start by reviewing your existing schematics and BOM, ensuring they are optimized for real-world implementation. I will refine the design to enhance stability across multiple input sources and create a build-ready wiring plan. For the prototype, I will assist in the assembly process, providing practical guidance to ensure functionality and reliability. I will also prepare a video demonstration showcasing the system's operation and energy flow. Timeline: 1 day. Can you confirm the specifications of the converters/inverters you plan to use, as this will influence the BOM and assembly process?
$150 USD in 1 day
0.0
0.0

I'm an embedded systems and R&D engineer with hands-on production experience in exactly this stack — native ESP-IDF, FreeRTOS dual-core task design, motor PWM, PID thermal control, I²C sensor drivers, Wi-Fi/BLE, and OTA with rollback safety .I work at the register level and care about clean, warning-free C/C++. I've built similar systems — multi-cuff pneumatic pressure controllers, IMU-based wearables, BLE-connected balance boards — all shipped in production under FreeRTOS with the exact discipline you're describing.
$400 USD in 5 days
0.0
0.0

Hi there, I have read through your requirements for the Hybrid Multi-Source Energy Prototype, and I am confident that my background in hardware design and firmware makes me the ideal partner for this project. I am looking for a long-term collaboration, and I am fully prepared to hit the ground running. Why I am a great fit for your project: Deep Experience in Power Electronics: I previously worked at Suvatika Systems, where I was responsible for the rigorous verification and testing of developed inverters and solar hybrid inverters. This experience gave me a deep understanding of how to handle high-power DC buses, LiFePO4 battery integration, and the complexities of multi-source hybrid energy systems. Debugging Expertise: My core strength lies in troubleshooting. Whether it’s isolating issues in the power stage or resolving firmware bugs in the control loop, I have a proven track record of moving projects from a "stuck" state to a functional, stable system. Hands-On Hardware Skills: I am highly proficient in PCB layout (up to 6 layers), and I have extensive experience with Arduino and STM32 environments, which allows me to seamlessly bridge your hardware schematics with functional firmware. I am available to start immediately and would love to discuss your vision for this project. Are you available for a quick chat to review the schematics?
$505 USD in 7 days
0.0
0.0

Hello, This is a practical build-focused project, and that aligns well with my experience. I work hands-on with power electronics, embedded systems, and real hardware integration, not just schematics. For a V1 prototype, I estimate a total cost in the range of $700 to $1,200, depending on component quality, protection design, and whether full assembly or guided build is preferred. Timeline -Milestone 1: Design review and risk analysis, 2 days -Milestone 2: Power path refinement and protection strategy, 5 days -Milestone 3: Final BOM and wiring plan, 3 days -Milestone 4: Prototype build and validation, 7 days First $100 Milestone -Detailed review of your schematics and BOM -Identification of real-world issues such as instability, inefficiencies, and protection gaps -Clear recommendations for safe multi-source integration -Initial system architecture refinement I have built low-power and energy-aware systems using STM32 and ESP32, including battery-operated designs, power optimization, and mixed-signal integration. I focus on stability, efficiency, and making systems actually work outside the lab. Once you open a chat, I can share relevant build examples and discuss how to move your system into a reliable working prototype.
$500 USD in 15 days
0.0
0.0

Peculiar, United States
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