PCB Board Design for BLE Device & Load Cell Sensor

@Mahihassi

As an experienced Electrical Engineer specializing in firmware development, PCB design, and IoT product engineering, I am excited to take on your project. My deep familiarity with microcontrollers including the ESP32 and CH32 variants, as well as my proficiency with software like Altium Designer, KiCad and EasyEDA make me the ideal candidate to design these PCB Boards. Essentially, I offer a complete turnkey solution from initial idea to the final product. You will benefit from my expertise in system architecture, robust firmware development using Embedded C/C++, as well as professional PCB layout. Additionally, I can provide intelligent algorithms for edge devices- a valuable skillset for your BLE Monitoring Device Prototype given its low-power requirements.

@macroenergy

As an experienced PCB designer with a background in electronics and embedded systems, I am confident that I can provide you with the high-quality designs you are looking for. Throughout my career, I have dealt with various complexities of circuit design and implemented numerous systems similar to what you are describing. My knowledge of components and layout optimizations will ensure efficient use of space on your boards, adhering to your specified constraints while maintaining robust functionality. Moreover, I possess significant experience with ESP32-based projects, which perfectly aligns with your project's requirement for an ESP32-H2 based BLE monitoring device prototype (Board 1). This provides me an intrinsic advantage in leveraging the best practices with ESP32 designs and designing load cell nodes (Board 2) equipped with CH32 variants, as you've mentioned. I understand the importance of a carefully tailored power design within each board. Having worked on battery-powered devices in the past, I am familiar with implementing power-saving features like MOSFET Load Switches and voltage dividers. Finally, as someone dedicated to client satisfaction and a meticulous problem-solver who thrives in pinpointing and resolving intricate issues, my collaboration guarantees not only meeting but exceeding your expectations on this project.

@SPARKtechBD

Since 2003 I am working in Digital Electronic. So more than 18 years of experience in Electronics. Arduino NANO/UNO/MEGA, ESP32 and Raspberry PI to build a digital device to read sensor data and send it to the web server, motor control, control relay switches and LEDs. More than 5(five) years of experience in Arduino design and build. If you want an excellent and error-free project delivery, then send a message to me, please. Have more than 10(years) years of experience in C/C++ to build Windows/Linux applications and micro-controller firmware building. If you want a good job delivery, then send a message to me, please. Since 1995 I have been working on Analog and Digital Electronics to build any kind of device. I have build lots of devices. So more than 20 years of experience on Electronics. Including power supply design. Any kinds of schematic and PCB design. Expert PCB design in EasyEDA Pro IDE.

@markoa7

With a decade of experience exhilarating and transcending the ordinary in electronic hardware and firmware engineering, I am genuinely excited to tackle your two-board project. My dexterity in PCB design and development has consistently delivered high-performance products that toe the line of innovation, precision, and reliability. As an ace in multilayer designs, I guarantee that every millimeter of space will be optimally utilized to meet your specifications while maintaining a clean layout for ease of assembly. Understanding the criticality of power management in embedded systems, I've honed my expertise in designing efficient circuits. Your BLE monitoring device prototype will benefit from my power optimization technique to eliminate leakage current using P-Channel MOSFET load switch, as well as from my proficiency in precise voltage divider design for effective battery monitoring. In relation to your second board project, my prowess with microcontrollers, particularly CH32 family and HX711 ADCs gives me a distinct edge. Creating noise-isolated layouts that prioritize analog section separation from buck converters is another proficiency alongside implementing robust protection mechanisms including TVS diodes and reverse polarity protection, both crucial for this design. The software-based addressing using MCU's Unique ID is also a task I'm familiar with; enabling you to fully leverage the functionalities of the node system.

@mairajali11

As a seasoned electrical engineer with an emphasis on PCB design, I have accumulated significant expertise in your area of interest, from selecting and arranging components to determining the ideal MCU for your projects. My 8+ years of experience makes me highly proficient at using EasyEDA, an aspect that works harmoniously with JLCPCB for subsequent manufacturing and assembly processes. An area of my core strength that sets me apart is my appreciation for optimization and sensitivity to space limitations in PCB designs. Your BLE device and load cell projects are no exception to this emphasis. In your first board, I grasp the need for maximizing limited space while minimizing height consideration without sacrificing essential components. In conclusion, by choosing to work with me you're getting not only a highly competent PCB designer but an electronics aficionado who understands the importance of power optimization (the use of MOSFETs)and detailed attention to the nitty-gritty details (e.g., pogo pin pads for programming interfaces). My solid grounding in noise isolation strategy is also an added advantage for both your boards. Rest assured that you will get nothing short of top-quality, timely and budget-conscious work from me as exemplified by being ranked among the top 1% of skilled professionals. Let’s make your vision a reality!

@PCBDESIGNER38

With a wealth of experience in circuit design, electronics, and PCB layout, I am fully equipped to take on your project and deliver outstanding results. I have a track record of successfully bringing innovative ideas to life while ensuring they are production-ready and cost-efficient. I understand the need for optimizing layouts to minimize interference and maximize performance, which I can fully implement in both Board 1 and Board 2. I am confident in working with any IDEs, including EasyEDA, which you prefer for this project. This paired with my knowledge of various MCUs such as ESP32-H2-MINI-1-N4 and CH32V006F8P6 allows me to create solutions that align perfectly with your requirements. Moreover, I am also well-versed in designing IoT devices using BLE communication providing an additional edge. I recognize the importance of strong communication and collaboration throughout a project, especially with teams that handle firmware & MCAD. I assure you that during our work together, you will receive timely updates on progress and transparent communication at all stages. No matter how intricate the specifications might be or what changes may arise mid-process, my adaptable nature ensures a solution-driven approach that keeps your project on track for success.

@Adeel2k14

Hello, I’m an Electrical Engineer with 7+ years of experience in PCB and embedded system design, currently working as an Embedded System Design Engineer in a reputed firm. I have designed up to 8-layer PCBs including mixed-signal, high-speed digital, analog, and power converter designs. I can design both ESP32-H2 and CH32V006 based boards in EasyEDA, optimized for JLCPCB manufacturing and assembly. I will ensure proper power design, noise isolation for HX711 ADCs, compact layout, and reliable RS-485 communication. You will receive clean schematics, optimized PCB layouts, and a complete BOM ready for fabrication and assembly. I focus on practical, production-ready designs. I’d be happy to work on this project.

@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!

@hayat38402

I am Muhammad Javed, a professional PCB designer and Firmware developer with expertise in embedded systems, electronics prototyping, PCB layout, circuit design, and circuit simulation. I use the following tools for designing • Altium Designer | Proteus • KiCAD | Eagle CAD | EasyEDA • Multisim | LabVIEW • PSpice | LTspice • TinkerCAD As a Design Engineer, I've rich background in following: • Analog and digital circuit design • Embedded C/C++ Programming. • VHDL | Verilog, Quartus | Vivado • Microcontrollers like Arduino, Raspberry Pi, FPGA, AVR, PIC, STM32 and ESP32. • IDEs like Keil MDK V5, ATmel studio and MPLab XC8. • Communication protocols like SPI, I2C, I2S, CAN, RS232, RS485, etc. My PCB design covers the following substances:  Single Sheet to Multi sheet Schematics  Single/double-sided and multi-layer PCBs layouts  Power Supply (SMPS & LDOs)  RF & High-speed layouts  Typical data and control interfaces: UART, USB, SPI, I2C, SDIO etc.  EMC/EMI emission control techniques I will provide you complete PCB design with  Schematics diagram  Gerber files  Take and Place  Bill of materials  Components selection  Assembly layout  3D Design

@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

@electronicsdone

Best Dual PCB Design Specialist ⭐⭐⭐⭐⭐ Dear Client, Before I suggest the optimal PCB design and integration approach, could you please confirm one key point: for Board 2, is the RS-485 output fully Modbus RTU compliant, or does it use a custom protocol layer on top of the electrical signals? The reason I ask is that this project is not just about “laying out boards.” The real success factor lies in correctly matching MCU selection, peripheral components, analog/digital isolation, power management, and communication standards so both the BLE monitoring device and the load cell node operate reliably without signal interference, noise issues, or unexpected behavior. That is where I can help. I can support this from the hardware integration side by reviewing your MCU and peripheral choices, optimizing component placement and routing for noise-sensitive analog signals, defining the correct RS-485 interface path, and preparing production-ready PCB layouts for both EasyEDA and JLCPCB manufacturing while ensuring power, signal integrity, and reliability. ✅A few quick questions from my side: 1. Are all pinouts and MCU variants finalized for both boards, or is there flexibility for optimization? 2. For Board 2, is the Modbus RTU implementation confirmed to work with your planned RS-485 network? Once these are clarified, the design and production process becomes much smoother, efficient, and lower risk. Best regards, Prat PCB Must Innovations

@TheDesignBloke

Hi, I went through your project carefully, and the core challenge is clear: designing two specialized PCB boards with strict constraints for a BLE device and a Load Cell sensor. This isn’t a surface-level task , it needs someone who understands advanced PCB layout and embedded systems design and can execute without hand-holding. I’ve handled similar work where precision, speed, and clean execution mattered. My approach is straightforward: I’ll utilize EasyEDA for efficient prototyping and leverage my knowledge of components to ensure optimal layout without exceeding physical constraints. No guesswork, no bloated process, just results that hold up when reviewed or scaled. If this aligns, I can start immediately and deliver finalized designs ready for JLCPCB manufacturing within 14 days. One quick question before I proceed: what is your target cost for the components? Best regards, Muskan

@leonidye

Hi,I am an experienced PCB design engineer and can design both Board 1 (ESP32-H2 BLE Monitoring Device) and Board 2 (8-Channel Load Cell Node) according to your specifications. For Board 1, I will optimize the layout to fit the ESP32-H2-MINI-1-N4 MCU, sensors (LIS3DHTR, GXHTC3, and MSM261DHT006), and a power system using 4x CR2032 cells and a buffer capacitor, while ensuring size constraints are met. For Board 2, I will design the CH32V003 MCU-based load cell node with 8x HX711 ADCs and RS-485 communication through MAX485, with careful attention to noise isolation and power protection. I will include features like reverse polarity protection, TVS diodes, and PTC fuse for safety, along with Pogo Pin programming for easy setup. I will provide an efficient design ready for JLCPCB manufacturing, ensuring that both boards are optimized for performance and reliability. With my expertise in EasyEDA, I can recommend additional optimizations and components to enhance functionality. I look forward to collaborating and delivering the final design. Best regards, Leonid Y.

@ZainAbbas51862

Greetings Dear Hiring Manager I have read the description of your project and I understand everything. I am an expert in precision hardware design and ultra-low-power optimization, with extensive experience in developing compact ESP32-H2 BLE devices and high-channel-density RS-485 sensor nodes in EasyEDA. My background includes engineering ultra-slim 0.8mm PCBs with Polymer Tantalum buffering for high-peak-current wireless protocols, as well as designing industrial-grade load cell arrays with HX711 ADCs and robust power/data protection for reliable long-distance Modbus communication. I am waiting on chat to discuss more and I am willing to start it now. Best Regards, Zain Abbas

@Muhammadzeesha59

Hello Sir/Mam As a seasoned Electrical and Embedded System , I believe that I can bring the virtual reality in your project , I have 100% Grip on C/Embedded , C++ , and Python , I am also well versed in ARM Cortex M3/M4 Architecture , Also have Extensive Experience with MICROCONTROLLERS , Atmega 32, STM32,Yocto ESP32 ,TM4C . I have a great Grip on ARDUINO , MATLAB , PCB LAYOUT and IOT Applications . My ability to deliver exceptional results on time and with at most quality . Please come on chat to discuss more about project. I will be waiting for your response. Thank you !

@BenJeremie

As a seasoned professional with over 8 years of experience in circuit design and PCB layout, I am the ideal candidate to bring your BLE device and load cell sensor project to life. My extensive experience lies not only in schematic and PCB design but also in parts selection, manufacturing file generation, and bill of material management. Coupled with a diligent team of 30 skilled engineers, we can handle every aspect to produce high-quality results efficiently. Your project specifications closely align with my expertise. My knowledge of ESP32, Arduino, STM32, and Raspberry Pi makes me well-versed in the microcontroller platforms you are using. I am also proficient in designing analog and digital circuits, employing both across your two board designs. Whether it's managing multiple layers or implementing high-speed interfaces like DDR4 or PCIe on your boards, my IPC standard footprint and layout design skills guarantee optimal performance.

@joaquinc48

✅✅✅ Embedded Hardware & PCB Design Engineer (ESP32 / RS-485 / Sensor Systems) ✅✅✅ Hi there, I have strong experience designing low-power IoT and precision sensor PCBs for JLCPCB manufacturing, including ESP32-based BLE devices, HX711 load-cell systems, and RS-485 industrial nodes. My work includes power optimization, mixed-signal layout, and EasyEDA designs prepared for assembly with full BOM and CPL files. My approach is to design both boards with careful power architecture, clean grounding, and DFM-ready layouts. The ESP32-H2 board will prioritize ultra-low power and height constraints, while the load-cell node will focus on analog noise isolation, stable HX711 routing, and robust RS-485 communication with proper protection. A few questions: Do you prefer JLC-recommended components only for assembly? Is there a target board size for the load-cell node? Should the RS-485 interface include isolation? I am ready to start immediately. Best regards

@mubashir021

Hello, I see that you require the design of two PCB boards in EasyEDA for a BLE monitoring device and a load cell sensor node. Your specifications for the ESP32-H2 based board, particularly regarding the dimensions and component placement, are clear. I am Mubashir Ahmed, a Full-Stack Developer, Engineer, and UI/UX Specialist with a strong background in electronics and embedded systems. With 6+ years of experience, I have successfully designed and developed various prototypes, ensuring high quality and precision. I also offer a free initial sample or demo to demonstrate my capabilities. For your project, I will provide: - Two detailed PCB designs in EasyEDA, one for the BLE device and one for the load cell sensor. - Recommendations on peripheral components and layout optimizations based on your requirements. - Comprehensive documentation including assembly instructions and a Bill of Materials (BOM). - A bonus design consideration for the I2C expansion header if space permits. My process will include: - Step 1: Gather detailed specifications and finalize component selections with you. - Step 2: Create the initial PCB layouts in EasyEDA based on your constraints. - Step 3: Review and iterate on the designs based on your feedback. - Step 4: Prepare the final designs and documentation for JLCPCB manufacturing. My Portfolio: https://www.freelancer.com/u/mubashir021 I look forward to bringing your PCB designs to life. Mubashir Ahmed

@mohjib092

Hello! I have solid experience designing manufacturing-ready PCBs in EasyEDA for JLCPCB assembly, including sensor boards, RF modules, and RS-485 industrial nodes. Your specifications are very clear and I can design both boards with proper layout optimization, low-power considerations, and BOM alignment with JLCPCB/LCSC parts. Do you want the ESP32-H2 antenna area kept completely clear (recommended keep-out zone) or are you planning to use an external antenna? For the CR2032 batteries (4x parallel), should I design the footprint specifically for Keystone 3003 holders, or are alternative low-profile holders acceptable? For the HX711 load cell inputs, do you want additional RC filtering or ESD protection on the analog lines to improve noise immunity? Should the Buck converter for the RS-485 node use a specific controller IC, or may I select a reliable JLCPCB-stocked module (e.g., MP1584/LM2596 class)? Do you require fully assembled boards from JLCPCB, meaning I should restrict components strictly to LCSC basic/extended parts? What deliverables do you expect: EasyEDA project files, Gerbers, BOM, Pick-and-Place, and assembly drawings? For both boards (schematic + optimized PCB layout + JLCPCB-ready production files), my estimated cost would be 540 depending on iterations and testing revisions. I can also provide power optimization, RF layout best practices for ESP32-H2, and analog noise isolation for the HX711 array to ensure reliable measurements.