PCB Design with Sensors and Rechargeable Battery

@iamhamzazaki

As a seasoned PCB designer with a comprehensive understanding of electrical engineering and an impressive skill set including 3D CAD and Circuit Design, I am well-equipped to convert this project from concept to scalable prototype. My extensive experience in hardware-software integration and expertise with low-power embedded systems make me the perfect fit for your compact battery-powered sensor PCB design. Notably, I have prior exposure working with ESP32 and integrating sensors, USB-C power delivery, as well as multi-sensor integration, mirroring the demands of this project. Given the specified core components such as the ESP32-S3-WROOM-1-N16R8 microcontroller, full-bridge load cell interface, temperature and humidity sensor, accelerometer, and rechargeable 3.7V LiPo battery among others, I can leverage my professional know-how to optimize their placement on the PCB within your mechanical constraints without incurring any performance loss or sacrificing manufacturability. Be it choosing between 2-layer or 4-layer stackup based on RF performance or deciding upon appropriate connector pitch/part numbers - your specifications are my command.

@MuhammadUzair16

Hi I am an embedded systems engineer with over 16 years of experience. I have extensive experience designing compact ESP32-based, battery-powered products with USB-C charging, sensor interfaces, RF-aware layouts, and production-ready KiCad documentation. I can develop the complete schematic and PCB within the 44 × 44 mm envelope, including the ESP32-S3, load-cell front end, SHT31, accelerometer, protected LiPo charging/power regulation, ESD protection, programming access, and clearly labeled connectors/test points. I would recommend the LIS3DH for its low power consumption and availability. Given the board density and RF requirements, I would initially favor a 4-layer stackup, although I can assess whether a cost-effective 2-layer design remains practical after placement. The WS2812B supply needs special attention: for reliable color and brightness across 10–30 LEDs, I would recommend a separately rated 5V boost rail, with final sizing based on the intended maximum brightness and LED usage pattern. Deliverables will include the complete KiCad source, ERC/DRC-clean schematic and layout, BOM, Gerbers, and assembly files prepared for JLCPCB or PCBWay. I can also support prototype bring-up, firmware, and the path from concept through consumer-grade small-batch production. Previous client designs cannot be shared publicly, but relevant examples can be shown privately. Do you have an enclosure drawing and a target maximum LED brightness/current? Please contact me to discuss details.

@macroenergy

Dear Sir, I have a diverse skill set that aligns perfectly with your compact battery-powered sensor PCB design project. In particular, my expertise in Circuit Design, Electrical Engineering, Electronics, Embedded Systems, and Product Design will greatly contribute to creating a reliable and efficient design. I am well-versed in using KiCad, though I am also comfortable with Altium. My extensive experience with the ESP32 microcontroller, battery-powered electronics, I²C communication interface, and ripple-free power supply designs will be valuable for the successful implementation of HX711, SHT31, and the accelerometer you've mentioned. In addition to this impressive line-up of skills and experiences, I have considerable know-how in handle similar projects like yours in small-batch production. My intention is not just to meet your specifications but ensure that the design can be smoothly scaled up later when needed. Don't just take my word for it! I invite you to review my past projects that features ESP32 integration, LiPo battery designs, USB-C power delivery systems and multi-sensor integration. With proven success in designing complex low-power circuits as demonstrated by my previous projects – including wireless transmission systems and energy-efficient power conversion solutions. Thank you for considering me for this exciting project! Let's discuss further how my skills complement your needs.

@ITECH

Hello, I am Shahbaz Ali, CEO & CTO of I-TECH Integrated Technologies. ITECH is a multidisciplinary engineering company specializing in end-to-end product development. Our expertise includes PCB design, embedded systems, IoT, automotive electronics, firmware development, CAD/CAM, 3D product design, mobile applications, web applications, and cloud dashboards. From concept development and prototyping to production-ready solutions, we help startups and enterprises transform innovative ideas into reliable, high-quality products with a strong focus on performance, manufacturability, and cost optimization. We would be pleased to support your project by providing PCB design services as per scope of work. Deliverables will include the PCB design and fabrication files along with KICAD files. Please feel free to contact me if you have any questions or would like to discuss your project. I look forward to the opportunity to work with you. Best regards, Shahbaz Ali CEO & CTO I-TECH Integrated Technologies (ITECH)

@amelectronics

Hello, I can help you with this project. I have experience designing compact ESP32-based PCBs with battery management, USB-C charging, sensor interfaces, and production-ready layouts. I will design a clean and reliable PCB within your size constraints, keeping the ESP32-S3 antenna area clear, optimizing component placement, and ensuring proper power distribution, decoupling, and ESD protection. I can also recommend whether a 2-layer or 4-layer PCB is the better choice based on routing, RF performance, and manufacturing cost. You will receive the complete schematic, PCB layout, BOM with manufacturer part numbers, Gerber files, Pick-and-Place files, and the editable project files. The final design will pass ERC and DRC checks and will be ready for fabrication at JLCPCB or PCBWay. Thank You.

@quocduypt95

Hello, I have 9 years of experience in embedded firmware development and professional PCB design using Altium Designer, with extensive experience in ESP32-based products, power management, and production-ready hardware. I have designed and practically implemented all the sensors you requested on previous circuit boards. I will provide everything required for JLCPCB prototype manufacturing. Looking forward to working with you. Best regards.

@mairajali11

With over 8 years of experience as an Electrical/Electronics Engineer and PCB Designer, I am confident that I can successfully translate your prototype design requirements into a clean, efficient and future-proof board. Having designed numerous high-quality PCBs using Eagle, Altium, KiCAD and EasyEDA, I am well-versed with the tools and resources needed to bring complex projects like this one to life. What truly sets me apart is my familiarity with the key components in your project, such as the ESP32-S3-WROOM-1-N16R8 microcontroller, HX711 4-wire full-bridge load cell interface, SHT31 temperature/humidity sensor, and the 3-axis accelerometer. I believe that my eagerness to propose innovative suggestions for components when deemed necessary, along with ensuring that all necessary decoupling, protection and supporting circuitry are included for reliability play a crucial role in creating successful PCB designs. But don't just take my word for it - feel free to check out my portfolio that includes projects similar to yours involving ESP32-S3 based IoT devices and multi-sensor integration. My designs have always stood the test of time including extreme cases like USB-C power delivery and battery-powered electronics - something that you need as part of your project design. By roping me in on this project you can rest assured knowing that your project will be executed seamlessly while adhering to the highest manufacturing standards.

@engrusmanfaiz

Hello, I have extensive experience designing ESP32-S3 battery-powered IoT PCBs in KiCad, including LiPo charging, USB-C, sensor integration, and low-power optimization. I can deliver a compact, production-ready 44×44 mm design with clean RF layout, proper antenna keep-out, ESD protection, and full manufacturing files (BOM, Gerbers, Pick & Place, and KiCad source). I have completed similar ESP32, USB-C, and multi-sensor projects and can ensure the design passes ERC/DRC and is ready for JLCPCB or PCBWay assembly.

@majeed219

Hello! I'm Abdul Majeed, an experienced Embedded Systems Engineer and Professional PCB Designer. I've invested considerable time and expertise in mastering the exact skills set you need to bring your compact battery-powered sensor PCB design project to life. Over the years, I've successfully designed PCBs working with a range of cutting-edge technologies, which include USB-C power delivery, multi-sensor integration, and battery-powered electronics just like what you are requesting. Crucial attention to detail is one of my greatest strengths; from respecting ESP32-S3 antenna keep out areas during component placement to optimizing your board space for manufacturability. My proficiency in using various design software (particularly KiCAD — your preference) means you can trust me to deliver a clean design that can seamlessly scale for small-batch production without a full redesign. Lastly, I pride myself on being a collaborator. This isn't just "your" design project; it's ours. So, in addition to providing frequent updates about the progress, I'll also give you free support and maintenance even after the completion of the project. Together, I am confident that we can create something revolutionary! Feel free to reach out with any questions or clarifications. Would be thrilled to get started!

@markoa7

Hi, I'd be glad to help design your ESP32-S3 battery-powered sensor PCB. This project matches my experience with compact IoT hardware, wireless modules, battery management, sensor integration, and production-focused PCB design. I have worked on ESP32/STM32-based boards involving LiPo charging, USB-C power, I²C sensors, ADC interfaces, RGB LED drivers, and low-power embedded systems. For compact designs, I focus on correct power architecture, antenna keepout, grounding, decoupling, and mechanical integration to avoid issues during prototyping. For this board, I would carefully place the ESP32-S3-WROOM antenna area according to Espressif guidelines, evaluate 2-layer vs 4-layer stackup based on routing density and RF requirements, and design the power system with proper battery protection, charging, 3.3V regulation, and LED power handling. I will also review connector selection, BOM availability, and DFM requirements for JLCPCB/PCBWay assembly. A couple of questions: 1. What is the expected maximum current draw for the WS2812B LED strip, and should all 30 LEDs support full brightness operation? 2. Do you already have the enclosure STEP file available, or should the PCB outline be designed from the dimensional requirements only? I can deliver the complete KiCad project, schematic, PCB layout, BOM, Gerbers, pick-and-place files, and documentation with ERC/DRC verification for fabrication.

@tshibsamuel477

Hi there, I read your offer carefully and understand that you need a compact 44 mm × 44 mm battery-powered ESP32-S3 sensor PCB in KiCad, with load cell interface, SHT31, accelerometer, LiPo charging, USB-C, 3.3 V regulation, RGB LED strip output, protection, and production-ready fabrication files. I can support the schematic, component selection, 2-layer vs 4-layer recommendation, ESP32 antenna keepout, USB-C charging circuit, battery protection, sensor routing, connector selection, ERC/DRC cleanup, BOM, Gerbers, pick-and-place files, and JLCPCB/PCBWay-ready outputs. My experience with ESP32 hardware, battery-powered IoT devices, USB-C power circuits, sensors, compact PCB layout, KiCad/Altium, and manufacturing documentation fits this project well. Just send me a message and we can review the enclosure constraints and start with the schematic architecture. Best regards, Samuel Tshibangu

@Adeel2k14

Hi! I am an Electronics Design Engineer with deep experience in multi-layer mixed-signal boards, ESP32-S3 implementations, USB-C power management, and sensor integration in Altium and KiCad. Proposed Approach: - Layer Stackup: 4-layer PCB for tight 44×44mm footprint, guaranteeing clean ground planes and optimal ESP32-S3 RF antenna performance. - Power & Charging: BQ25628 / TP4056 USB-C charger with full OVP/ESD protection, plus a 5V boost regulator for the WS2812B LEDs. - Sensors: LIS3DH, SHT31, and HX711 with low-noise routing. I will deliver complete KiCad/Altium project files, BOM, Gerbers, and Pick-and-Place files ready for JLCPCB/PCBWay assembly.

@azraazeen9

Hello, i am ready exited to work you as i read your job description I am also an expert in making 2d,3d modelling and animating characters 2dautocad drawing ,elevation, solid work, Revit ,FBX ,Unity, Render also interior and exterior design. I have experience in field of more than 10+ years. I can Create Intro and Explainer Videos. for products and companies. Kindly check My Portfolio as well. Hope for your very soon reply. Thank you

@Amidst

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!

@hayteekeys

HI, KINDLY READ THROUGH MY PROPOSAL I will design a compact, production-ready 44×44 mm battery-powered sensor PCB around the ESP32-S3-WROOM-1-N16R8, fully integrating the 4-wire load cell (HX711), SHT31, 3-axis accelerometer, LiPo charging, and WS2812B LED strip interface optimized for a 46 mm circular enclosure. MY APPROACH ✅ Phase 1: Schematic design in KiCad with correct antenna keep-out, ESD protection, 3.3 V regulation, and USB-C BMS (~500 mA charge). ✅ Phase 2: Tight 2- or 4-layer layout (I will recommend the best stack-up for RF + density), optimized placement, and power routing for the LED strip. ✅ Phase 3: Full ERC/DRC clean files, JLCPCB/PCBWay-ready BOM + Gerbers + pick-and-place, ready for prototype. RELEVANT PROJECTS - ESP32-S3 / ESP32 battery-powered IoT PCBs with multi-sensor integration, USB-C charging, and tight form-factor constraints. - Expert in KiCad, HX711 load-cell interfaces, and small-batch manufacturable designs. DELIVERABLES - Complete KiCad project (schematic + PCB) - BOM with part numbers (JLCPCB/PCBWay preferred) - Gerbers, pick-and-place, and assembly notes - Clean design ready to scale to small production QUESTIONS 1. Do you have a preferred accelerometer (LIS3DH / ADXL345) or shall I propose the best fit? 2. Preferred connector for the 4-wire load cell and LED strip? 3. Any height or component-side restrictions inside the 46 mm enclosure? Ready to start immediately.

@sahildogra222

Hello Mate!Greetings , I’ve carefully checked your requirements and really interested in this job. I’m working as a freelance graphic designer with U.S. and European teams. I’m offering best quality and highest performance at lowest price. I can complete your project on time and your will experience great satisfaction with me. I have rich experienced in Sensor Integration, Circuit Design, 3D CAD, Embedded Systems, Signal Processing, PCB Layout, Electronics, Product Design, I2C and Electrical Engineering. For more information about me, please refer to my portfolios. I’m ready to discuss your project and start immediately. Looking forward to hearing you back and discussing all details.. Thanks

@hayat38402

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.

@leonidye

Hi, I can design your compact ESP32-S3 sensor PCB in **KiCad**, optimized for battery-powered IoT operation and future small-batch manufacturing. I have extensive experience designing ESP32-based embedded systems with LiPo battery management, USB-C charging, I²C sensors, RF layout, and production-ready PCBs. My approach is to optimize component placement within the 44 × 44 mm constraint while respecting the ESP32 antenna keep-out, minimizing power consumption, and ensuring reliable signal integrity. I will integrate the HX711 load cell interface, SHT31, 3-axis accelerometer, LiPo charging and protection, 3.3 V regulation, USB-C programming, and the WS2812B interface with proper power distribution and ESD protection. I will also recommend the most suitable 2-layer or 4-layer stack-up based on RF performance and routing density. The final deliverables will include the complete KiCad project, schematic, PCB layout, BOM with JLCPCB/PCBWay-compatible components, Gerbers, pick-and-place files, and manufacturing documentation. All designs will pass ERC/DRC checks and be ready for fabrication and assembly. I am available to start immediately and would be happy to discuss your enclosure, battery, and production requirements before beginning the design. Regards,

@ovaisiq

Hi We can use ip5306 for charging and that will also provide boosted 5V rail for LEDs and hx711. With ESP32-S3 using native USB you don't need boot reset buttons. If you make 44x44 PCB you will not be able to fit into 46mm dia enclosure. I can make a circular PCB that will fit into enclosure easily. For battery's protection, we can use DW01a with FS8205. I will do this in KiCAD 9 and PCB will be 4layer as there is not much cost difference. Thanks