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I have an existing ESP32-WROOM-32E handheld PCB designed in KiCad 10 — 2-layer, ~76×51mm, ~49 components (ESP32, CH340C USB-serial, TP4056 + DW01A battery charging, LDO, USB-C, LiPo). It's ~80–90% complete. I don't need a new design — I need corrections in my native KiCad files plus a full review before production. Scope: 1) Re-power the CH340C from VBUS (USB 5V) 2) Fix footprint-size inconsistencies (some passives are 0402, should be 0603) — schematic → PCB → re-route. 3) Resolve a schematic/PCB reference mismatch. 4) Clean up a small floating track stub. 5) Run ERC (default rules ON) + DRC, deliver both reports (0 real errors), plus consistent Gerbers, BOM (LCSC parts), CPL, PDFs. 5) Perform a full independent design review of schematic and PCB. This board was designed by a previous engineer and had several errors, so I want a careful check of power, connections, values, footprints, and manufacturability. Flag anything wrong, not just the points above. Requirements: must work in KiCad and deliver native source files (no conversion). Experience with ESP32, CH340 USB-serial, and low-power/battery design is important. Board will be made at JLCPCB (use LCSC parts). I have a detailed technical document listing every point, which I'll share with the freelancer I select. In your proposal, include your price, timeline, and short note on your ESP32/KiCad experience.
Project ID: 40571622
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Active 6 days ago
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As a seasoned professional in electronics engineering and a Preferred Freelancer, I am confident in my ability to meet the requirements of your project. With over 8 years of experience and proficiency in KiCad, I assure you that I can meticulously review and correct any inconsistencies within your design files while adhering to the meticulous requirements of JLCPCB. My extensive proficiency extends to your specific components with considerable knowledge of ESP32, CH340C USB-serial, TP4056 + DW01A battery charging among others. These proficiencies allow me to ensure optimal power usage, identify crucial connections, verify values against footprints, and assess manufacturability thoroughly. My ability to anticipate potential issues during the independent design review would prove to be an invaluable asset for your project. Raising the bar in employing the latest technologies in my work, I can not only deliver the necessary native source files but also provide you with detailed reports including flawless Gerber files, accurate BOM (LCSC parts), CPLs, PDFs alongside ERC (default rules ON) and DRC reports. My past customers have applauded my work for accuracy and prompt delivery while staying within their budgets. I guarantee the same commitment and dedication towards realizing your objectives. Let's get started on transforming your PCB design!
$140 USD in 7 days
6.9
6.9
43 freelancers are bidding on average $129 USD for this job

Hi I am an embedded systems engineer with over 16 years of experience in PCB design, review and bring-up for ESP32 based products, USB-serial interfaces, LiPo charging and low-power handheld devices. I can work directly in your native KiCad 10 files, make the specific corrections you listed, then do a careful independent review of the schematic and layout before production. My approach would be to first check the power path, USB-C/VBUS behavior, CH340C connections, battery charger/protection section, ESP32 boot/programming pins, footprints, values and JLCPCB/LCSC suitability. After that I will update the schematic/PCB consistently, reroute only where needed, clear ERC/DRC real errors, and provide Gerbers, BOM, CPL, PDFs and the corrected KiCad source files. My bid is $220 and I can complete this in 4 days after receiving the KiCad project and your technical notes. A couple of quick checks: are the LCSC part choices already fixed, or may I suggest substitutions if availability/footprint risk is found? Also, do you want assembly-ready JLCPCB outputs only, or fabrication files for another backup manufacturer too? Please contact me to discuss details.
$220 USD in 4 days
7.6
7.6

With a deep passion for circuit design and extensive experience in KiCad, I bring a unique skill set to the table that would prove essential to your project. Having worked on numerous PCB designs, I fully appreciate the level of accuracy and attention to detail required to catch and correct potential errors. My proficiency in KiCad guarantees that all your corrections, from footprint-size inconsistencies to floating track stubs, will be handled seamlessly and with the utmost care. Being well-versed in both ESP32 and CH340 USB-serial, I understand the challenges these components may pose and will identify any issues that might compromise their efficiency. Additionally, my expertise in low-power/battery design is especially pertinent to this project as it aligns closely with your specific needs. My timeline and commitment align precisely with this project; I can hit the ground running and deliver results promptly without compromising quality. I have an understanding of how important timeline is while doing any pcb desing work as such.I thank you for considering me for this opportunity. I look forward to utilizing my skills in digital motor control combined with my meticulous approach to give your ESP32 board the detailed review it deserves.
$125 USD in 7 days
7.5
7.5

I will share the native KiCad design files along with Gerbers, BOM and CPL needed for JLCPCB. Please share the complete details to understand full requirement if not shared already here in the details. Thanks
$115 USD in 3 days
7.0
7.0

Your board is already close to production, so the priority is a thorough engineering review to eliminate hidden issues before manufacturing. With 12+ years of experience in KiCad, ESP32 hardware, USB-C interfaces, battery-powered IoT devices, and JLCPCB production, I can correct the CH340C power path, update 0402→0603 footprints, resolve schematic/PCB mismatches, clean routing, and perform a complete ERC/DRC and manufacturability review. I have extensive experience with ESP32-WROOM, CH340, TP4056, DW01A, LCSC/JLCPCB workflows, and will deliver native KiCad source files, error-free Gerbers, BOM, CPL, ERC/DRC reports, and a detailed review highlighting any additional issues before production. Estimated timeline: 2–3 days. Fixed budget: USD 180. Regards, Engineer Muhammad Usman PCB Pro Expert
$140 USD in 7 days
6.8
6.8

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!
$180 USD in 5 days
5.9
5.9

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.
$140 USD in 7 days
6.1
6.1

⭐⭐⭐⭐⭐ Hi, This is exactly the kind of refinement project I enjoy. Rather than redesigning the board, I'll work directly in your native KiCad 10 project to correct the existing issues and perform a thorough engineering review before fabrication. I'll: Re-power the CH340C from USB VBUS. Replace the incorrect 0402 passives with 0603 footprints, updating both schematic and PCB while preserving connectivity. Resolve the schematic/PCB reference mismatch. Remove the floating track stub and clean up routing where needed. Run ERC and DRC until there are 0 real errors, then generate updated Gerbers, drill files, BOM (LCSC), CPL, PDFs, and native KiCad files. Beyond your checklist, I'll perform a complete design review covering power distribution, ESP32 circuitry, USB-C, LiPo charging/protection, decoupling, footprints, net connectivity, DFM, and JLCPCB assembly compatibility, documenting any recommendations before final delivery. I have extensive experience with KiCad, ESP32, CH340 USB-UART, battery-powered embedded devices, and preparing boards for JLCPCB/LCSC assembly. I look forward to helping ensure this board is production-ready on the first spin.
$140 USD in 7 days
5.1
5.1

Hi, Greetings! I am interested in working on your project. Could you please share the design details and technical requirements so we can discuss the project scope and key parameters in detail? I look forward to working with you. Thank you!
$140 USD in 7 days
4.7
4.7

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 for my previous designs and also so we can discuss further on your project I look Forward to working with you. Best Regards, Abdur-Rafiq
$110 USD in 7 days
5.2
5.2

Hi, im interested to work on this project. Would you like to edit it in easy eda pro with correct LCSC parts. I can provide gerber file , LCSC Bom , pick and place assembly file . And sorce file. Can optimize and fix your old circuit . And can deliver 100% working drc error free DFM ready PCb. Let me know if you are interested. Thanks and regards Madushan
$100 USD in 3 days
4.8
4.8

As an experienced Senior Electronics Engineer, I'm your go-to choice for intricate design reviews utilizing KiCad. My in-depth understanding of RF engineering and embedded systems has honed my ability to analyze circuit designs at both macro and micro levels, ensuring no stone goes unturned. With over 8 years immersed within the industry, I've worked with highly complicated boards — ranging from RF modules to embedded controllers like your ESP32. In relation to low-power considerations for your handheld PCB, my extensive background in power electronics remains an invaluable asset. I have a proven track record in successful low-power/battery design implementations which aligns precisely to your project's core requirements. In addition, my thoroughness extends beyond fixing literal issues, I am obsessed with manufacturability and ease of production, as well as compliance with industry standards. Choosing me would ensure not just corrections but a comprehensive review of not just the points you mentioned but everything in between. With a detailed technical document capturing the pain points you've encountered, I can surgically identify any further anomalies or potential hurdles to guarantee ultimate performance and deliverables that exceed expectations. In sum, my efficient workflow combined with my innate passion for hardware design encapsulates a smart investment for your project and futureproof functionality for your PCB.
$140 USD in 5 days
4.4
4.4

Hello, I am an experienced Electronics and PCB Design Engineer with strong expertise in KiCad, ESP32 hardware, USB interfaces, battery charging circuits, and low-power embedded systems. I can carefully review and correct your existing KiCad 10 project without redesigning the board. My work will include: ✔ CH340C power correction from VBUS (5V) ✔ Footprint standardization (0402 to 0603) and required re-routing ✔ Resolution of schematic/PCB mismatches and track cleanup ✔ Complete ERC and DRC verification with zero real errors ✔ Independent review of power distribution, component values, routing, and manufacturability for JLCPCB assembly ✔ Delivery of native KiCad files, Gerbers, BOM (LCSC), CPL, PDFs, and technical documentation. I provide thorough engineering reviews and fast, reliable turnaround for production-ready PCB designs. Best regards,
$180 USD in 7 days
4.5
4.5

Hi, I have strong experience with KiCad, ESP32, USB interfaces, battery-powered designs, and JLCPCB production requirements. I can fix the listed issues, perform a complete schematic and PCB review, run ERC/DRC checks, and deliver the updated KiCad files along with all manufacturing outputs. Please check my portfolio for similar projects. I'm ready to start immediately. Best regards, Ahmed
$180 USD in 7 days
4.2
4.2

Hi, I can review and correct your existing KiCad 10 ESP32-WROOM-32E design without redesigning the board. I'll implement the requested fixes (CH340C power, footprint updates, reference mismatch, track cleanup), perform a thorough schematic and PCB review, run ERC/DRC until clean, and deliver updated native KiCad files, Gerbers, BOM (LCSC), CPL, PDFs, and reports ready for JLCPCB. I have experience with ESP32, CH340, LiPo charging circuits, USB-C, and KiCad-based production designs. I can start immediately and provide a careful manufacturability review before production. Best regards, Muhammad Usman
$220 USD in 2 days
3.8
3.8

Looking for someone who can do a Design review of your ESP32-WROOM-32E based PCB ? Ive got your back! Hi, I am Zain. I can easily handle the task including • Embedded Systems • Circuit Design • PCB Design • KiCAD / Altium • Mixed Signal PCB Designs / High Frequency PCB Designs • Firmware Development • C / C++ • Simulations etc. Lets chat. Best regards
$60 USD in 2 days
3.8
3.8

Good day. Some of my past work you can look at portfolio. Also i can share fresh routed PCB with ESP32. My experience with ESP32: routing, firmware developing.
$80 USD in 5 days
4.6
4.6

Hello, I have experience with PCB design and Schematic validation. Which supplier do you preferr? Digikey or other supplier? Once you provide me the KiCAD project file, I can validate and produe the BOM file correctly. Best,Miguel
$120 USD in 2 days
3.5
3.5

Dear Sir, I would like to present myself as prospective candidate to do your project. I have sound knowledge and experiences in Electronic and Programming including ESP32 based schematic design and PCB design. I have read your project description and I would be the best candidate as my skills perfectly align with your project skill requirements. If you visit my portfolio, you will see many of my PCB designs. All of which I have done with using KiCAD. There are several other i have not posted there which also done with KiCAD. And with regarding use of ESP32 on the design PCBs, 90% of my PCB designs are using ESP32. Therefore I would be the best candidate to do your project . Hopefully I expect to complete your design review and correction with in 1-2 weeks. Please message me if you have any question for me. Expecting a favorable reply, I remain. Isuru Athukorala
$140 USD in 7 days
3.7
3.7

Hi, This project is about delivering a production-ready ESP32 design by correcting the existing KiCad project and performing a thorough engineering review before fabrication. Beyond the requested changes, I'll verify the complete design to identify any electrical, layout, or manufacturability issues that could affect reliability. My approach is to implement the required schematic and PCB corrections, synchronize all design files, update footprints and routing where necessary, then perform a comprehensive review of the power architecture, USB interface, battery charging circuit, component values, footprint assignments, grounding, decoupling, and DFM considerations. The final design will be validated with ERC/DRC, and all manufacturing outputs will be regenerated to ensure consistency for JLCPCB assembly. Estimated timeline: 3–5 business days after receiving the KiCad project and technical review document. I look forward to discussing your project.
$150 USD in 7 days
3.1
3.1

I work in KiCad daily with ESP32, CH340C USB-serial, TP4056 battery charging, and JLCPCB/LCSC production workflows — exactly the experience this board needs. I will fix all five listed issues (CH340C VBUS re-power, 0402→0603 footprint corrections, reference mismatch, floating stub cleanup), run ERC and DRC to zero real errors, and perform a thorough independent design review flagging any additional power, connection, value, footprint, or manufacturability issues. Deliverables: corrected KiCad source files, ERC/DRC reports, Gerbers, LCSC BOM, CPL, and PDFs ready for JLCPCB. Timeline: 3–5 days after receiving files. Best regards, Engr. Muhammad Uzair
$60 USD in 3 days
1.0
1.0

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