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The goal is to design a high-voltage, industrial-grade PCB board connecting to 8 external temperature/humidity 1. Core Components & Specifications: ESP32-C3-MINI-1-N4 TCA9548A I2C Multiplexer INMP441 microphone 8x JST-XH 4-Pin Vertical Connectors (2.5mm pitch). LM5164 Buck Converter Must convert to 5V Secondary Power: AP2112K-3.3TRG1 LDO (SOT-23-5). Converts 5V to 3.3V 2- Mechanical & Layout Constraints All 8 JST-XH ports should be aligned along one edge USB Port: One USB-C port for programming and data transfer. Audio Isolation: Keep the INMP441 microphone on a separate ground plane Mounting: Include 4x M3 mounting holes 3-Deliverables: Schematic (PDF and Source files). PCB Layout (Gerber files, Drill files). Bill of Materials (BOM) with LCSC/Digi-Key part numbers. 3D STEP file of the assembled board.
ID do Projeto: 40149359
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With an extensive background in circuit design, electrical engineering and electronics, I have the knowledge and skills to successfully complete your ESP32 Temperature Monitoring Module project. My proficiency in designing PCBs using Altium and Easyeda, gives me the ability to create a professional-grade layout while adhering to the mechanical and layout constraints you've provided. Furthermore, my experience with power electronics makes me particularly well-suited to ensure that your high-voltage, industrial-grade board is efficient and reliable. In addition to these specific technical skills, I bring a deep understanding of embedded systems, microcontrollers and I2C communication protocol—all essential for this project. The successful integration of the ESP32-C3-MINI-1-N4, TCA9548A I2C Multiplexer and LM5164 Buck Converter to name a few, will be mindfully executed under my stewardship. Your deliverables are priority for me: providing you with detailed schematics (PDF and source files), a carefully designed PCB layout (Gerber files, Drill files), an accurate Bill of Materials with clear part numbers from vendors such as LCSC or Digi-Key, and even a 3D STEP file of the assembled board. I understand your need for clear communication throughout this project and you can count on regular updates from me. Thank you for considering me for this role; I look forward to the opportunity to contribute my expertise to your project.
$50 USD em 7 dias
7,4
7,4
90 freelancers estão ofertando em média $166 USD for esse trabalho

With over a decade of experience as an Electrical Engineer with an emphasis on Embedded Systems, I believe I am the best candidate for this ESP32 Temperature Monitoring Module project. My specialized skills in firmware development and PCB design make me adept at handling and integrating complex circuitry, as required by this task. I'm also well-versed in the use of Altium Designer, KiCad, Eagle, EasyEDA, and Target which will ensure a professional and precise layout. My core skills don't just end at circuit design; rather, my approach encompasses the full product development workflow - from ideation to prototyping to delivering the final product. This holistic approach will guarantee that not only will your high-voltage industrial-grade module be well-designed and functional, but it will also align perfectly with your specified mechanical constraints. Moreover, my expertise extends beyond hardware. As a result, I'll be able to not just deliver a PCB board, but also an intelligent solution. For example, I can integrate powerful algorithms for edge computing and data analysis bringing enhanced functionality and value to your temperature monitoring module. Additionally, my proficiency in IoT connectivity through MQTT, APIs, BLE, Wi-Fi etc., provides assurances that your device will be IoT-ready and compatible with your desired eventuality.
$325 USD em 7 dias
8,2
8,2

As a seasoned electrical engineer and in-depth experience with PCB layout and design, I believe I am the ideal candidate for your ESP32 Temperature Monitoring Module. My career spanned around various industrial-grade electronic designs and my core strength is designing exactly what you need, alongside high voltage board connections ensuring safety. My skills also include 3D modelling which positions me as a valuable asset in designing your desired mechanical constraints such as the USB-C port for programming and data transfer, and aligning the 8 JST-XH ports along one edge. By utilizing CAD software like Rhino, CATIA, ArchiCAD, I'll provide you with comprehensive Gerber files including drill files, giving you the BOM with LCSC/Digi-Key part numbers that are essential to the project. Moreover, I've gained a lot of experience by working with multiple software's like Arduino IDE, Autodesk Eagle, Proteus which will be of utmost importance while handling your project which also requires deep knowledge of transforming 5V to 3.3V by using LM5164 Buck Converter AP2112K-3.3TRG1 LDO (SOT-23-5). Also audio isolation of INMP441 microphone can be done ensuring its separate ground plane. I hope my expertise in these areas will prove to be valuable for your project.
$140 USD em 3 dias
7,7
7,7

Hello Mohamed D. I recently saw your project details for "ESP32 Temperature Monitoring Module" After reading the job description, I quickly realized that your requirements precisely match my abilities. I am a master of detail, colour 3D modelling, and rendering design, 3D/2D home plan, home model interior, exterior, elevation, map, object model, 3D human characters, etc. Please ping me so we can discuss. https://www.freelancer.com/u/kkirandeep582 Thanks & Regards Kirandeep Kaur
$67 USD em 1 dia
7,4
7,4

Hi, I have experience in designing Circuits and can complete your project. I have expertise in the following: 1- Designing schematic and PCBA 2- Ordering the PCBA and getting boards manufactured. 3- Writing firmware for the PCBA to make sure everything works as expected. 4- I can also develop smartphone apps to communicate and control the hardware. If you wish we can discuss in chat. Thank you.
$500 USD em 10 dias
7,4
7,4

As an experienced electrical engineer and a circuits design expert, tackling your ESP32 Temperature Monitoring Module project is well within my wheelhouse. My thorough understanding of PCB design and layout, matched with my familiarity with necessary components like the TCA9548A I2C multiplexer, will ensure that I deliver a high-voltage industrial-grade board that aligns seamlessly with your specifications. Your preference for a USB-C port and audio isolation for the INMP441 microphone will be paid close attention to during my design process. I assure you of a professional rendering of the 8x JST-XH 4-Pin Vertical Connectors along one edge - an indicator of my dedication to going above and beyond the call of duty. Furthermore, incorporating four M3 mounting holes in the design will only add to its appeal and practicality. Finally, not only will we deliver all your required deliverables such as the schematic and PCB layout files but we will also provide you with a 3D STEP file of the assembled board - an extra mile service you won't find everywhere. With my commitment to precision, timeliness, and quality, trust that your ESP32 Temperature Monitoring Module project is in capable hands. Geoffrey heba
$240 USD em 15 dias
7,6
7,6

Hello mate, When i seen the details "ESP32 Temperature Monitoring Module" which you are searching. I am super exited to start it ASAP! I have many software's & tools for make it- Ki Cad, Autodesk EAGLE, Altinum, Circuit board design, Autodesk fusion 360 etc. Make 2d & 3d both I will share update within it in 1-2 Hours. WILL SHOW YOU SOME PAST OF WORKS Best regards, Manu R.
$80 USD em 1 dia
7,3
7,3

Will deliver KiCad design files as well as ... Schematic (PDF and Source files). PCB Layout (Gerber files, Drill files). Bill of Materials (BOM) with LCSC/Digi-Key part numbers. 3D STEP file of the assembled board. Will use seperate ground plane for the microphone. It's high dynamic range microphone, so it's better to use seperate low noise linear regullator and filtering for better performance,
$250 USD em 7 dias
6,9
6,9

KINDLY READ THROUGH MY PROPOSAL THIS IS WHAT I WILL DO - Deliver industrial-grade schematic: ESP32-C3-MINI-1-N4 core, TCA9548A mux for 8 I2C sensors, INMP441 mic w/ isolated ground, LM5164 buck (HV in → 5V out), AP2112K LDO (5V → 3.3V) - Optimize PCB layout: 8 JST-XH aligned on edge, USB-C port, audio isolation, 4x M3 holes – 2/4-layer for EMI/safety - Provide Gerbers/drills, BOM w/ LCSC/Digi-Key PNs, PDF/source schematics, assembled 3D STEP RELEVANT PROJECTS - 2025: HV sensor hub PCB w/ ESP32 + 6x I2C ports, buck/LDO power – deployed in factory monitoring - 2024: Isolated audio + multi-sensor board for industrial IoT – full deliverables, client re-ordered QUESTIONS - Input voltage range for LM5164 (e.g., 12-48V DC)? - Sensor details (e.g., SHT3x type, pinout for JST)? - Board size limit & preferred CAD tool (Altium/KiCad)?
$150 USD em 3 dias
6,6
6,6

As a highly experienced and committed electronic hardware and firmware engineer, I believe I possess the skills and expertise necessary to deliver excellent results for your ESP32 Temperature Monitoring Module. My extensive knowledge of PCB design and development, particularly with power supply circuits, aligns perfectly with your project's objectives. Having engaged in similar projects in the past, I am well-versed in the accurate integration of multiple components, including those you've specified such as INMP441 microphone and TCA9548A I2C Multiplexer. Firmware development is also one of my core strengths. With proficiency in various communication protocols such as UART, SPI, Ethernet, USB, CAN, and MODBUS, I can ensure efficient data transfer rates for your module. Moreover, my solid background in programming microcontrollers including ESP32 will bring reliability and stability to the system. Lastly, my competence extends to RF design and analysis. Given the need for Wi-Fi connectivity in this project, my capabilities in optimizing antennas and RF circuit design will be a valuable asset. Lastly, I guarantee a timely delivery without compromising on quality. Let's partner together to transform your idea into a robust reality.
$200 USD em 2 dias
6,7
6,7

When it comes to designing high-quality PCBs that meet specific project requirements, my experience speaks for itself. As an Electrical/Electronics Engineer with over 8 years in the field, I've honed my skills in circuit design and PCB layout using industry-standard tools like Eagle, Altium, KiCAD, and EasyEDA. I am confident in my ability to tackle your ESP32 Temperature Monitoring Module project. In addition to my strong PCB design knowhow, I possess extensive expertise in working with microcontrollers and embedded systems like the ESP32 module specified in this project. I'm familiar with I2C protocols as well as individual components such as the INMP441 microphone. That being said, I can ensure that the layout of your board will be optimized for better audio isolation while ensuring the easy-assembly of JST-XH connectors and the inclusion of all necessary USB and power ports. My commitment to quality is unwavering - this philosophy has played a vital role in earning me a Preferred Freelancer status. By choosing me for this project, you'll not only get well-documented schematics and Gerber files but also an experienced professional who designs boards that work flawlessly first time. With my skillsets, let's turn your temperature monitoring vision into a reality!
$140 USD em 7 dias
6,7
6,7

As a seasoned Embedded Systems Engineer and Professional PCB Designer, I’m well-versed in the very circuits, electrical and electronics design skills that your project demands. My extensive experience spans across a range of cutting-edge technologies including the very microcontrollers you're using in this project – ESP32s. I can design your ESP32 Temperature Monitoring Module with remarkable precision and reliability. My familiarity with I2C communication fits like a glove to deliver on your essential requirements: connecting 8 external temperature/humidity sensors via TCA9548A I2C Multiplexer, keeping INMP441 microphone isolated, aligning all JST-XH ports neatly and incorporating the necessary mounting holes for enhanced stability. Additionally, my mastery of Altium, Eagle, KiCAD, EasyEDA – key software for PCB design – assures you an impeccable work tailored to your needs. One of my outstanding qualities is my ability to integrate firmware and hardware effectively. This will come in handy as it's not only about designing the PCB but also aligning its functionalities meticulously. Thanks to my diverse skills in single board computers (Raspberry pi, Banana Pi, Beaglebone Black) we can utilize the USB-C port for programming and data transfer. I've got this, given my highly rated soldering and layout wiring experience - Picture that!
$150 USD em 2 dias
6,4
6,4

Hi, welcome, My expertise in automation and control is especially relevant to your project, having had extensive experience in power systems, electrical engineering, control, wiring, coordination of protections, grounding, lighting shield and telecommunication networks; in fields like research, data analysis, design and building, that align perfectly with your task objectives. I guarantee you total support until the final product meet all your guidelines and eventual special requests to finish the project with best quallitiy, i have many experience in similar projects, I can have it ready in a few days (5-10). You need a time to check and approve it, for that reason i ask for 30 days. Since i have excellent automation design proficiency, i will provide you a full model with a detailed description that will help you to understand each step and functionality, with the respective references, we can create many milestones that you can release according with your satisfaction with the results of project, you can release the money when you feel absolutely satisfied, i'm ready to start with your assignment, please contact me for further details, best regards.
$500 USD em 30 dias
5,9
5,9

Hi, We would like to grab this opportunity and will work till you get 100% satisfied with our work. We are an expert team which have many years of experience on Electronics, Microcontroller, Electrical Engineering, PCB Layout, 3D Modelling, Circuit Design, Embedded Systems, PCB Design and Layout, I2C Please come over chat and discuss your requirement in a detailed way. Thank You
$30 USD em 1 dia
5,9
5,9

Hi, I’m a multidisciplinary engineer focused on design + analysis, delivering production ready CAD and simulation-backed solutions. I work across mechanical and architectural scopes, with clear drawings, practical detailing, and fast communication. Feel free to check my profile for similar projects ,happy to review your scope and suggest the best next steps. G. Zaralı
$140 USD em 7 dias
5,6
5,6

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!
$140 USD em 7 dias
5,6
5,6

Hello, I can design a high-voltage, industrial-grade PCB integrating the ESP32-C3, I²C expansion, audio sensing, and eight external temperature/humidity interfaces. The focus will be on effective power design, clean mixed-signal layout, and mechanically disciplined connector alignment suitable for industrial use. All work will follow IPC PCB design standards and EMI/ESD best practices. Following are the deliverables: • Schematic design and PCB layout • Gerber and Drill files for manufacturing • 3D STEP files • Bill of materials I wanted to ask: • Is there a target board size or enclosure constraint to follow? I have 7+ years of experience in projects like: • Industrial ESP32-based control and sensor boards • High-voltage buck and LDO power architectures My software expertise includes: • Altium designer, KiCad, EAGLE Thank you for considering my proposal. I’m available to clarify and discuss details further through a meeting at your ease. Best Regards, Abubakar
$150 USD em 7 dias
5,1
5,1

Hello, I have designed something similar for a past client. This project is a strong fit for my background. I’m a seasoned electronics hardware engineer (not a middleman), and I’ve delivered boards where alignment constraints (like multiple JST-XH connectors along one edge), mixed-signal design, and power integrity were critical to success. especially combining ESP32-based control, multi-sensor I²C expansion, and audio circuitry into a single, production-ready PCB. Here, I’ll make sure the -LM5164 buck stage is laid out correctly for efficiency and noise control, followed by a clean 5 V → 3.3 V LDO stage for the ESP32-C3 and peripherals. -The TCA9548A I²C multiplexer will be integrated cleanly to support all 8 external temperature/humidity channels with proper pull-ups and routing discipline. -I’m especially mindful of audio isolation, and I’ll implement a dedicated ground strategy for the INMP441 microphone to avoid digital and switching noise coupling. If this sounds good fit, please start a conversation in the inbox using the chat button below. Abbas J SMB ElectroTech P.S. What you’re really getting here isn’t just execution, it’s ownership. I take responsibility for delivering a clean, correct design so you don’t have to manage details or worry about downstream issues. You can visit my profile to see what my past clients has to say about my work
$140 USD em 7 dias
6,0
6,0

Hello Sir, I am thrilled about the ESP32 Temperature Monitoring Module project. With my expertise in PCB design and layout, electronics, and embedded systems, I am confident in delivering a high-quality solution. I will meticulously align the 8 JST-XH ports, include a USB-C port, isolate the INMP441 microphone for clear audio, and integrate 4x M3 mounting holes for easy installation. My deliverables will include comprehensive schematics, PCB layouts, a detailed BOM, and a 3D STEP file. Let's collaborate on creating a cutting-edge temperature monitoring module. When can we discuss further details? What specific specifications are crucial for your industrial-grade PCB board design?
$100 USD em 2 dias
5,1
5,1

⭐⭐⭐⭐⭐ Senior PCB & Firmware & Prototyping Engineer Here! ⭐⭐⭐⭐⭐ Hello! I have checked out your project details and I am confident that I can finish your project perfectly. I can deliver a production-ready, industrial-grade PCB that meets your electrical, mechanical, and manufacturability requirements while maintaining robust signal integrity and power reliability. I have hands-on experience designing ESP32-C3 systems with I²C multiplexers, mixed-signal peripherals, and high-channel-count external connectors in space-constrained layouts. For this design, I would implement a clean power architecture using the LM5164 buck for stable 5 V generation and the AP2112K LDO for low-noise 3.3 V, with careful grounding and filtering to protect the ESP32 and sensors. The INMP441 microphone will be isolated on its own ground plane with controlled return paths to minimize digital noise coupling. I will align all eight JST-XH connectors along a single board edge as specified, respect USB-C routing and ESD requirements, and include mechanically sound M3 mounting holes. Deliverables will include verified schematics, manufacturable Gerbers, a sourcing-ready BOM, and an accurate 3D STEP model suitable for enclosure integration. Looking forward to discussing more details. Regards, Mykola
$140 USD em 7 dias
5,1
5,1

Hi there! Mixed high-voltage power, sensitive audio, and multiple external sensors on one board is where small layout mistakes become expensive. To resolve this, I’ll design a layered power and grounding strategy around the ESP32-C3, keeping the LM5164 switcher quiet, isolating the INMP441 on its own ground island, and routing the TCA9548A buses cleanly to all eight JST-XH ports. USB-C will be handled with proper ESD and impedance awareness, and all connectors will be edge-aligned for clean harnessing. The result is a manufacturable, industrial-grade PCB—not a prototype that barely works. ? This aligns directly with the type of hardware I deliver. ? Designed ESP32-based industrial boards with external sensor arrays and I2C multiplexing ? Implemented high-voltage buck converters with low-noise secondary LDO stages ? Routed audio and mixed-signal PCBs using split ground planes and EMI-aware layouts Happy to review your input voltage range and enclosure constraints before finalizing stack-up and creepage rules. Top Rated with 100% job success, delivering boards that pass bring-up the first time. Best regards, Safeer Ahmad
$250 USD em 7 dias
5,1
5,1

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