Automotive PCB Design Review – ESP32, I2C, LM393, MCP23017 (12/24V System)

@Mahihassi

As an accomplished Electrical Engineer specialized in firmware development and PCB design, I believe I'm the ideal candidate for your Automotive PCB Design Review project. With a Master's in Embedded Systems coupled with extensive experience in electronics engineering, I've garnered a deep understanding of microcontrollers and PCB hardware, making me particularly adept at reviewing complex designs to identify both circuit functioning issues and possible improvements. My proficiency spreads across various relevant skill sets, including familiarity with the ESP32, I2C systems, signal conditioning (comparators, dividers, protection), as well as low-voltage logic interfacing. Additionally, I have direct expertise working on automotive electronics projects – a crucial aspect for your undertaking – ensuring that any designs I review come with thorough considerations for automotive-related challenges such as 12V/24V signal interfacing or power distribution. With a keen eye for detail, my approach to this project will be meticulous yet efficient - examining your schematic to validate all circuits against intended function and verify component values and design choices. The result: an annotated schematic or written report that outlines any identified issues alongside suggested corrections and improvements. Your budget is open to proposals, let's move towards high-functioning interconnected modules for your vehicle. Let's do this!

@macroenergy

With over a decade of experience in the field, I confidently present myself as a seasoned freelancer for your Automotive PCB Design Review project. Having a comprehensive understanding of both analogue and digital electronics gives me the edge that your case demands. I've had the privilege of dealing with a wide range of electrical projects, with a notable focus on automotive electronics: an experience crucial to efficiently navigating the complexities of your design. My proficiency in ESP32, I2C systems, signal conditioning, low-voltage logic interfacing, and PCB design will prove invaluable in ensuring the sharp functionality you seek for your 12V/24V system. The challenging aspect such as correctly interfacing between different voltage levels and handling multiple interconnected modules is an area I have conquered. My familiarization with the MCP23017 I/O expander and LM393 comparators will significantly aid in verifying that every circuit functions as intended. Utilizing my expertise in testing and simulation - especially using OrCAD (TI, National, LinearTech, Maximlibraries) and Matlab

@amelectronics

I am a skilled and reliable Embedded Systems Engineer with over 6 years of hands-on experience in Arduino, ESP32/ESP8266, and microcontroller-based development. I specialize in designing efficient, stable, and scalable embedded solutions, turning ideas into fully functional hardware-software systems. I have a strong background in electronics, sensors, communication protocols (UART, I2C, SPI, MQTT, WiFi, BLE), and real-time embedded systems. My development approach focuses on clean, well-structured, and well-documented firmware, ensuring long-term reliability and easy maintenance. I also provide thorough testing, debugging, and performance optimization, including power efficiency improvements where required. I am a detail-oriented engineer with strong problem-solving skills and extensive experience in hardware debugging and firmware optimization. Beyond technical expertise, I value clear communication, meeting deadlines, and maintaining high client satisfaction. I work closely with clients to fully understand project requirements and deliver high-quality results. Pricing is flexible and can be discussed based on project scope and complexity. I am open to both short-term and long-term projects. Let’s work together to build a professional, reliable, and efficient embedded system for your needs.

@ITECH

Drawing from my extensive experience in electronic product development and automotive electronics, I am confident that I can provide the high-level scrutiny your project demands. Our mastery of ESP32, I2C systems, signal conditioning, and low-voltage logic interfacing aligns perfectly with your project needs. I commit to reviewing your PCB design down to its minutest details and verifying signal integrity, circuit performance, and compatibility with a 12V/24V environment. As a seasoned professional in IoT and automotive electronics, I intimately understand the unique challenges it poses. My knowledge in dealing with signal protection methods (TVS diodes, resistor dividers), filtering, as well as grounding and power distribution strategies perfectly equips me to scrutinize all your project's design aspects. Importantly, we will carry out meticulous checks on the interfacing of the system; from the 12V/24V signals to the 3.3V logic interfaces to ensure trouble-free operation in a vehicle environment. My proficiency in producing quality deliverables including annotated schematics or written reports along with suggested corrections will help you make informed decisions about your project going forward. Choose us and let’s build a top-quality automotive system that meets all functional requirements while keeping manufacturability and cost optimization in mind.

@mairajali11

With my extensive experience in electrical and electronics engineering, specializing in PCB design for over 8 years, I'm confident that I can assist you with your automotive project. Along with my proficiency in working with popular PCB design software such as Eagle, Altium, KiCAD, and EasyEDA – the same software used in your project – I hold a professional certification specifically for my EasyEDA expertise which streamlines our collaboration. Throughout my career, I’ve continually strengthened my knowledge of analogue and digital electronics engineering through various projects, drawing on critical concepts that align seamlessly with yours. This includes strengths in handling complex systems like I2C communication buses and effectively managing the interfacing of different voltage levels (in this case 12V/24V signals and 3.3V logic), both of which are crucial for the success of your design. My specific familiarity with ESP32, I2C systems, comparators, dividers, and signal conditioning give me an edge in understanding and enhancing your current design. Moreover, my inherent ability to identify potential design flaws or risks will ensure that your automotive project meets stringent safety requirements while delivering optimal performance. I am confident that entrusting your review task to me would provide the far-reaching support you need.

@engrusmanfaiz

Hello, You are right to validate this design before PCB, especially for a 12V/24V automotive environment where reliability is critical. I have 6+ years of experience in electronics design, including ESP32, I2C systems, and mixed-signal circuits. I will review your schematic to verify functionality of all modules and interfaces. Special focus will be on 12V/24V to 3.3V protection and signal integrity. I will check I2C design (pull-ups, loading, noise immunity) and MCP23017 interfacing. Comparator circuits (LM393) and sensing thresholds will be validated. Grounding, power distribution, and decoupling will be carefully analyzed. I will identify risks such as EMI, transients, and design weaknesses. You will receive an annotated schematic and a clear list of improvements. Regards, Engr. Muhammad Usman

@markoa7

As an accomplished electronic hardware and firmware engineer, I believe I possess the ideal skill set for your Automotive PCB Design Review project. My extensive experience in PCB design, development, and firmware programming, including expertise in ESP32, makes me a perfect match for creating innovative solutions that maintain high-quality standards. Additionally, with my specialization in power supply circuits and multilayer designs for embedded systems, I can instinctively comprehend the complexities of your project. One aspect that sets me apart is my prior involvement in automotive electronics projects. This exposure has endowed me with an in-depth understanding of the unique challenges and stringent requirements involved - particularly when it comes to reliability and adherence to appropriate standards in 12V/24V systems. I'm not just promising a cursory review or validation; I'm promising an added layer of assurance to your project through meticulous scrutiny, identification of design flaws or risks, and concrete suggestions for improvements. My goal is to ensure the optimized functionality of your automotive system right from the schematic level. As a professional who is passionate about translating ideas into reality meticulously, where iterative-, highly focused work is required towards set objectives; I'm confident my work ethic will be an invaluable asset on your project.

@hayteekeys

Hi, KINDLY READ THROUGH MY PROPOSAL Automotive electronics engineer with 11+ years designing and reviewing 12V/24V vehicle systems. I will provide a detailed, professional schematic review of your ESP32-based control system, focusing on reliability, protection, and correct interfacing in a harsh automotive environment. MY APPROACH ✅ Verify all circuits (ESP32, MCP23017 I2C, LM393 comparators, input protection, RJ45 comms, LEDs) for correct function and automotive robustness
✅ Check component values, stress margins, TVS/resistor divider/filtering, and 12V/24V to 3.3V interfacing
✅ Validate I2C bus loading, pull-ups, grounding strategy and power distribution
✅ Identify any risks (EMI, transients, latch-up, thermal issues) specific to vehicle use
✅ Provide clear, prioritised list of issues and concrete improvement recommendations RELEVANT PROJECTS • Full schematic review and validation of an ESP32 + MCP23017 automotive control module for 24V commercial vehicle application DELIVERABLES • Annotated EasyEDA/PDF schematic with comments • Written report listing all findings, risks and suggested fixes QUESTIONS 1 When can you share the schematic (EasyEDA link or PDF)? 2 Any specific areas of concern (e.g. input protection, I2C reliability)? 3 What is the expected operating temperature range and vibration environment? 4 Target turnaround time for the review? Ready to start immediately upon receiving the files.

@tshibsamuel477

I carefully read your project, and I can help you perform a detailed and reliable schematic review for your automotive system before PCB layout. I’m Samuel Tshibangu, a mechatronics engineer with strong experience in analog/digital electronics, ESP32 systems, signal conditioning, and PCB design. I’ve worked with similar components and architectures including MCP23017, I2C systems, comparators, protection circuits, and mixed 12V/24V to 3.3V interfacing, so I can quickly identify risks and improvements. I can review functionality, component choices, protection strategy, grounding, I2C integrity, and automotive-related concerns (noise, transients, reliability), and provide a clear, structured report with actionable corrections. Feel free to send me a message. Best regards, Samuel Tshibangu

@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

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.

@debosx

Hello! I'm a highly skilled PCB Designer with over 10 years of expertise in delivering reliable and efficient PCB designs. I specialize in creating precision designs tailored to client's needs, utilizing top-tier design tools such as Altium Designer, Autodesk Eagle, KiCad, EasyEDA, Siemens PADS, DipTrace, Allegro/OrCAD, Fritzing and Proteus. My goal is always to ensure the highest quality and performance in every project. Core Expertise : • Schematic Capture & Layout Design • Component Selection & Library Management • Reverse Engineering (PCB Replication, PCB Cloning) • Gerber, BOM, and CPL File Generation & Manufacturing Support • Design for Manufacturability (DFM) and Design for Assembly (DFA) • PCB Design & Development (Single, Double, Multi-Layer, Flexible PCBs) Industries Served : • Medical Devices • Telecommunications • Consumer Electronics • Industrial Equipment • Automotive Electronics • Safety and Security Devices Why Choose Me? • Attention to Detail and Commitment to Quality • Strong Communication Skills & Client-Centric Focus • Timely Delivery & Flexible Approach to Meet Project Requirements I would love to help you with your next PCB design project. Feel free to reach out, and let’s discuss how I can bring your ideas to life! Best Regards, Utpal

@Mahmoud00Ibrahim

I’m an Electronics Engineer with strong experience in embedded systems and automotive hardware design. I’ve worked on similar ESP32-based, multi-module systems with I2C communication and 12V/24V to 3.3V interfacing, and these designs have been successfully implemented in real applications. I will perform a detailed schematic review covering functionality, component selection, protection circuits, I2C integrity, grounding, and overall system reliability under automotive conditions. Timeline (5 Days): • Day 1: Initial review + system understanding • Day 2: Power, protection, and 12V/24V interfacing check • Day 3: ESP32, MCP23017, and I2C bus validation • Day 4: Signal conditioning (LM393), LEDs, and transistor circuits • Day 5: Final report with issues, risks, and recommendations You’ll receive a clear, actionable report to ensure a robust, production-ready design. Best regards, Mahmoud Ibrahim Electronics Engineer

@yaroslavmark

Hi, I am an electronics engineer with 8+ years of experience in automotive-grade PCB and schematic design, having reviewed 50+ mixed-signal systems (ESP32, CAN, I2C) and reduced field failures by over 30% through robust protection and interface validation. I have validated 12V/24V front-ends, optimized comparator-based sensing chains, and stabilized I2C buses across multi-node systems with <2% communication error rates in noisy environments. Approach ✅ I will perform a functional block-by-block verification of the schematic, ensuring correct operation of ESP32, MCP23017, LM393 stages, and validating all signal paths from 12/24V inputs to 3.3V logic domains. ✅ I will analyze protection and robustness, including TVS selection, resistor dividers, filtering, ESD/EMI resilience, and compliance with automotive transients (ISO 7637 considerations). ✅ I will review I2C topology (pull-ups, capacitance, addressing, bus length via RJ45), grounding strategy, and power distribution to prevent noise coupling and communication instability. Questions ✅ I need to confirm the expected cable length and topology for the RJ45-based I2C bus to properly assess capacitance, pull-up sizing, and signal integrity. ✅ I would like to know the exact transient requirements (load dump, cold crank, ISO pulses) and whether the design targets a specific automotive standard. Best, Yaroslav

@shykhAbubakar

Hello, I have TOP NOTCH similar work on the Automotive Control Module Project, where I reviewed schematics for ESP32 based systems and I2C bus expansion. Before moving forward, please confirm: Do you want me to validate I2C bus loading and pull up values, or keep scope limited to schematic connectivity? Should I check TVS diode selection and resistor divider ratios against automotive surge conditions? Project Deliverables • Schematic review • Validation of ESP32 interfacing (Feel free to ask if you would like additional deliverables.) Tools I Use • EasyEDA / Altium Designer I am ready to deliver a comprehensive schematic review that ensures your automotive system is compliant, and ready for PCB layout. The focus will be on signal integrity and reliable ESP32/I2C interfacing. The documentation will be aligned with ISO and IPC standards. Best regards, Abubakar Muhammad

@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 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

@PathumSudarshana

Hi, I can review your schematic thoroughly before you move to PCB—this is the best point to catch issues, especially for automotive designs. I have solid experience with ESP32 systems, I2C (including MCP23017), 12V/24V to 3.3V interfacing, comparators like LM393, and input protection (TVS, dividers, filtering). I’ll check functionality, component values, I2C bus stability, power/grounding, and overall robustness for automotive conditions. You’ll get a clear list of any issues along with practical fixes and improvements. Send the schematic (EasyEDA/PDF), and I can start right away. Best regards, Pathum

@shadabkhan92

As an experienced electrical engineer, I have all the necessary skills and expertise needed to diligently review your automotive PCB design. I understand the unique challenges that come with working in a vehicle environment, especially dealing with different voltage systems like 12V/24V. Given my familiarity with ESP32, I2C and signal conditioning, I am confident in my ability to evaluate your circuitry for any design flaws and to suggest appropriate improvements where needed. My work also extends into areas such as grounding, power distribution, transistor and LED circuits, several of which are required for this project. I am delighted by the prospect of putting my strong analogue and digital electronics knowledge to use for verifying that all circuits function exactly as intended. In past automotive projects, I've evaluated similar systems and have prior experience with elements like RJ45 connectors, LM393 comparators, input protection, etc.

@electronicsdone

Best Automotive Schematic Review Expert for ESP32-Based Systems! ⭐⭐⭐⭐⭐ Dear Client, The biggest risk here is not a missing component. It is moving into PCB layout with one or two wrong assumptions around 12V/24V interfacing, I2C loading, grounding, or protection that later become expensive. That is the point where experience actually matters. I would approach this by: 1. reviewing the schematic block-by-block for automotive-specific electrical risk 2. validating the 12V/24V to 3.3V interfacing, I2C bus design, comparator stages, and protection circuits 3. returning a clear list of issues, corrections, and improvement priorities before layout starts This keeps the next stage safer, cleaner, and easier to defend instead of relying on layout to solve schematic risks. Two quick questions: 1. Are both 12V and 24V use cases expected on the same hardware variant? 2. Do you want the feedback mainly as annotated schematics, a written report, or both? If you message me, I can outline the most important review checkpoints I would use before the design moves into PCB layout. Best regards, Prat PCB Must Innovations