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I need help with a circuit design for a small engine tachometer. Issues with noise and pulse ringing at the moment. If you have experience please let me know
Mã dự án: 40235527
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46 freelancer chào giá trung bình $143 USD cho công việc này

As an accomplished Electrical Engineer with a Master's in Embedded Systems and extensive experience in firmware development, PCB design, and IoT product engineering, I firmly believe I am the best fit for your project. My expertise with microcontrollers like ESP32 combined with my proficiency in circuit design and signal processing makes me well-suited to resolve your noise and pulse ringing challenges effectively. Throughout my career, enhancing functionalities and overcoming electronic issues have been my prime focus. I've successfully executed numerous projects involving tachometers, so I'm familiar with both the importance of reliable data collection from engines and the potential issues that arise. Additionally, my skills in ensuring low-power consumption, RF hardware design, and AI algorithm integration can further enhance the performance of your tachometer. Beyond mere circuit design, I provide a comprehensive approach encompassing firmware development, PCB design, AI/ML integration, IoT Connectivity, Software Development, Mechanical CAD modeling among other services that will come in handy for this project. For a robust solution- from system architecture and schematics to final product delivery- I'm your one-stop-shop solution. Let's join forces to revamp your engine tachometer into a noise-free and glitch-proof powerhouse!
$225 USD trong 7 ngày
8,2
8,2

Dear [Client's Name], Greetings! My name is Metin, and I am an experienced electrical engineer with extensive experience in circuit design, particularly within the realms of Analog Electronics and Embedded Systems. With a vast wealth of knowledge in PCB design, including proficiency with Altium and Easyeda, I assure you of my ability to address the noise and pulse ringing issues you're facing with your small engine tachometer. Having specialized in Digital Motor Control, I've created dynamic control algorithms for different motor types like BLDC, Step, and DC motors. This background gives me a deep understanding of motor-driven systems and how to optimize their designs. My experience also extends to power electronics; I have implemented various motor drives such as AC/DC converters, DC-DC converters, solar inverters, and battery chargers.I believe that my expertise in both analog design and embedded systems will enable me to identify root causes and provide lasting solutions to the challenges you're encountering. With meticulous attention to detail, I consistently deliver circuits that meet the highest performance standards. Additionally, my proficiency in MATLAB enables me to simulate hardware with precision before real-world implementation. As such, I can virtually test and ensure the effectiveness of any design solution I propose for your tachometer project.
$85 USD trong 7 ngày
7,4
7,4

Hello, I’m an electrical engineer with experience in automotive signal conditioning and noisy ignition environments. Tachometer inputs from small engines (especially inductive pickup or coil negative) commonly suffer from ringing, high dV/dt spikes, and ground bounce. I can help you redesign the input stage using proper protection and filtering — typically TVS suppression, RC snubbing, Schmitt-trigger conditioning, or opto/isolation if required. The goal is to deliver clean, debounce-free pulses to the MCU or counter without false triggering. I can also review your current schematic and scope captures to identify whether the issue is impedance mismatch, insufficient clamping, or layout-related coupling. Share your input source type (coil, hall, pickup), voltage levels, and MCU interface, and I’ll propose a stable solution. Regards, Engr Muhammad Usman
$140 USD trong 3 ngày
6,6
6,6

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: 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 trong 7 ngày
6,1
6,1

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!
$230 USD trong 5 ngày
5,6
5,6

Hi, I have solid experience in ESP32-S3 circuit design, including high-speed signal routing, power integrity, EMI reduction, and mixed-signal layouts. I’ve also worked on pulse-based measurement systems such as tachometers and RPM sensing circuits, including handling common issues like: Electrical noise from ignition systems Pulse ringing and signal distortion Proper signal conditioning (RC filtering, Schmitt triggers, comparators) Grounding and PCB layout optimization Protection circuits for harsh engine environments I can help you analyze the noise source and redesign the input stage to ensure clean and reliable pulse detection. Let me know if you'd like to share the current schematic or scope waveform — I’d be happy to take a look. Best regards, Hamza Electrical and Control Engineer
$85 USD trong 7 ngày
5,3
5,3

Hello. I read your project description very carefully. I have completed many projects regarding esp32-S3 . I have a deep understanding and experience in the areas of microcontroller that you mentioned. We are a company of mechatronics, electrical, computer and software engineers with vast expertise in PCB layout, embedded systems, AC/DC converters, stepper motors, transformers, python, machine learning, raspberry pi, automation, power management, sensors & signal processing projects, unsupervised learning, reinforcement learning, genetic algorithm, convolutional model, recurrent network, We can assure you that your work will be done within the given timeline with complete task achievement. Feel free to contact for further queries so I may guide you well.
$140 USD trong 7 ngày
5,1
5,1

Fixing a small engine tachometer that misreads because of noise and pulse ringing is not a problem with the right front end conditioning and grounding strategy. Well, what I can do for you as an electronics engineer with 8+ years of experience is review your current pickup method and circuit, identify where the ringing is coming from, and redesign the input stage with proper filtering, clamping, and clean pulse shaping so the microcontroller or counter sees stable edges only. In fact, I have designed noise sensitive embedded circuits including a custom security camera circuit design, a real time low power 8 bit SAR logic circuit, and high power control electronics, so I know how to tame fast transients and EMI without killing the signal.
$30 USD trong 7 ngày
4,8
4,8

As an avid electrical engineer and seasoned professional in the field, I can bring a lot to the table for your circuit design project. My deep understanding of electrical and electronic principles has enabled me to solve complex issues like the one you're facing with noise and pulse ringing for tachometer designs. I'm proficient in designing efficient and robust circuits that mitigate noise and pulses, maximizing the performance of your engine tachometer. Moreover, my familiarity with various software such as ArchiCAD, Rhino, Autocad, 3dmax, etc. gives me a unique advantage to approach the entire design holistically. Be it hardware or software oriented section of the project, I can guarantee high-quality results by leveraging my vast skillset. With more than proficient communication skills in English, I assure we'll have an excellent rapport throughout this engagement. Let's not just fix the current noise issues but design a long-lasting solution together to enhance the overall performance of your tachometer. By choosing me, you're choosing expertise, efficiency and creativity all rolled into one efficient package.
$120 USD trong 2 ngày
4,8
4,8

Best ESP32-S3 Noise-Resilient Circuit Design Expert ⭐⭐⭐⭐⭐ Hi, Thank you for posting your project, “ESP32-S3 Circuit Design.” I’ve reviewed your requirements and can help you resolve the noise, pulse ringing, and signal-integrity issues affecting your small engine tachometer and turn the design into a robust, reliable measurement circuit suitable for real-world operation. I bring 11+ years of experience in mixed-signal electronics, noisy-environment signal conditioning, ESP32-based designs, and automotive/engine-adjacent sensing applications. I’ve worked extensively on tachometer inputs, inductive and Hall-effect sensors, RC/LC filtering, Schmitt triggering, protection networks, and PCB layout techniques that eliminate false counts and ringing. ✅ How I’ll Help You Succeed 1. Design proper input conditioning (RC filtering, clamping, level shifting, Schmitt trigger or comparator as needed). 2. Ensure safe and clean interfacing to the ESP32-S3 GPIO or peripheral (RMT / PCNT / capture). 3. Provide a corrected schematic and clear component value recommendations. ✅ Before I Start, One Quick Question: What type of tach signal are you using (ignition coil, inductive pickup, Hall sensor, or logic-level output), and what RPM range are you targeting? If you share that, feel free to message me, and we can align quickly. Best regards, Prat PCB Must Innovations
$250 USD trong 2 ngày
6,5
6,5

✅Okay, I got what you want exactly. I am a senior embedded hardware engineer with over 10 years of experience, providing ESP32-based system design, mixed-signal circuit development, PCB layout, and noise mitigation for automotive and industrial applications. In my opinion, the key to solving your tachometer issue is cleaning up the input stage before it ever reaches the ESP32-S3. I would focus on proper signal conditioning—using a combination of RC filtering, Schmitt trigger buffering or a fast comparator, and improved grounding/layout strategy—to eliminate ringing and suppress high-frequency noise at the source rather than trying to fix it in firmware. This project is very similar to my previous works. I recently designed a crankshaft RPM measurement module for a small gasoline generator using an ESP32 and opto-isolated input stage, where I reduced pulse overshoot from 8V ringing to under 0.8V by redesigning the input impedance and adding a 2-stage filter network. I also optimized a 4-layer PCB stackup with controlled return paths, which stabilized edge detection up to 12,000 RPM without false triggering. Via private chatting or meeting, I will provide the creative idea and good tech solution for your project and I want to discuss about the budget and timeline in detail. Best regards. Yaroslav
$140 USD trong 7 ngày
4,1
4,1

As an experienced RF and electronics design engineer rooted in Ukraine, I am confident that I possess the specific skill set required for your Esp32-s3 circuit design project. From my years of developing numerous electrical hardware projects, I have acquired a deep understanding of designing for predictable performance, minimizing noise and pulse ringing. I've also excelled in RF design where reducing EMI, grounding issues, and isolation are vital. My core expertise includes PCB layout (especially impedance control and grounding), high-speed and mixed-signal PCB design with an emphasis on matching impedance and length, power supply and filtering design, and even antenna design and tuning for Wi-Fi, GNSS, Wi-Fi, ISM bands – which could potentially address any antennas-related issues you may have encountered. To accomplish this project effectively, I leverage my proficiency in several helpful tools including Altium, OrCAD, KiCAD among others for PCB design, CST, ADS, HFSS for RF design simulations as well as NI Multisim or Mathlab for other electrical engineering tasks. With this arsenal of skills and tools at my disposal, rest assured that your tachometer circuit will be professionally designed and precisely executed.
$140 USD trong 7 ngày
3,4
3,4

Hello, I’d be happy to help with your ESP32-S3 tachometer circuit design. I have strong hands-on experience working with ESP32-S3 based hardware and have designed multiple mixed-signal and industrial boards using it, including signal conditioning, noise reduction, and reliable pulse detection in electrically noisy environments. For small engine tachometer applications, issues like noise pickup and pulse ringing are very common, especially when sensing ignition or inductive signals. If you can share the current schematic and a description of the signal source, I can start with a detailed review and propose practical fixes. Looking forward to working with you. Best regards, Ahmed Yahia
$200 USD trong 7 ngày
3,4
3,4

With every project, my goal is to provide tailored, effective solutions that not only meet your current needs but also set you up for future success. Your engine tachometer design challenges with noise and pulse ringing are ones I'm well acquainted with. Thanks to my extensive experience in electronic engineering, we can isolate these issues from the get-go and ensure a smooth, solid solution using my expertise in signal processing and circuit design. My proficiency with ESP32 combined with a deep understanding of hardware/firmware interaction ensures that your tachometer's performance won't be compromised by design flaws or noise interference. Additionally, having aptly served industries that require precision such as medical devices, aerospace, and industrial automation, your project's need for reliable functionality and high accuracy is well within my capabilities. Working together on this ESP32-S3 circuit design project offers us the opportunity to effectively incorporate your specifications while creating a fully custom solution. Let's collaborate to ensure the noise-averse circuit design that you're aiming for. I am ready to put my proficiency in PCB Design to use using reputable platforms such as Altium Designer, KiCAD and Eagle depending on your preferences. Dedicating myself fully to your project will be valuable in delivering an exceptional final product that you can rely on long beyond its initial implementation.
$140 USD trong 7 ngày
3,0
3,0

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 !
$140 USD trong 2 ngày
2,9
2,9

As an electrical engineer with expertise in circuit design and PCB layout, I'm confident I can help with your project to design a circuit for the engine tachometer. My extensive experience includes designing both analog and digital circuits, and I am well-versed in addressing common issues like noise and pulse ringing. I have hands-on experience in PCB layout design, circuit simulation, and analysis that could prove invaluable in resolving your current noise and pulse issues. In addition to my circuit design capabilities, I bring a comprehensive understanding of embedded software development and signal processing to the table. These skills will enable me to not only design a robust circuit but also ensure its seamless integration with the ESP32-S3 microcontroller you're working with. Choosing me for your project means choosing someone who is deeply committed to delivering high-quality engineering solutions tailored specifically to your needs. I have a proven track record of conducting thorough prototyping an
$150 USD trong 3 ngày
2,3
2,3

Hi, yes — I can definitely help with that. I’ve worked on engine tachometer input conditioning (coil/ignition pickup, injector pulses, alternator “W” terminal, Hall sensors, etc.) and noise/ringing is the most common issue. I can help you design a clean front-end using the right combination of: RC low-pass / pulse shaping Schmitt trigger buffering (74HC14 / SN74LVC / comparator) TVS + clamp diodes for spikes Zener protection + series resistor Optocoupler isolation (if needed) Proper grounding and filtering layout If you share: 1. your schematic (or a photo), 2. where you pick the signal from (spark plug / coil / alternator / Hall), 3. scope waveform (before and after ringing), I can propose an improved circuit that gives a stable tach pulse with no false triggering.
$95 USD trong 7 ngày
2,0
2,0

Hi, I’ve worked on projects like this before, so what you’re describing makes sense to me. And I'm really interested in this project - Esp32-s3 circuit design. I usually focus on getting things done cleanly and making sure they work properly in real use, not just on paper. I’m comfortable either improving an existing setup or helping build something new, depending on what stage you’re at. I keep communication straightforward, share progress along the way, and flag issues early so there are no surprises later. If you want, you can share a bit more about the current setup or the goal you’re trying to reach, and I can let you know how I’d approach it. Thanks, Jesse
$200 USD trong 5 ngày
0,0
0,0

Hello! I've been recommended by a Freelancer Recruiter. Nice to meet you. I've just completed a similar circuit design project for an IoT developer who needed to reduce noise in a sensor reading. I'm the perfect fit for your Esp32-s3 circuit design project because I have hands-on experience in designing low-power circuits that minimize noise and jitter. With expertise in microcontroller design, signal processing, and PCB layout, I can optimize your Esp32-s3 circuit for a stable and accurate small engine tachometer reading. I've achieved signal-to-noise ratios of up to 10dB in previous projects, resulting in reliable sensor data. Multiple 5-star reviews on microcontroller design and PCB layout projects attest to my skills. Happy to hop on a quick call (no obligation) to discuss architecture, timeline, and a clear plan + quote. Chris | Lead Developer | Novatech
$250 USD trong 7 ngày
0,0
0,0

Hi, I've built multiple one-page websites and landing pages designed to convert visitors into leads or bookings, not just look good. I reviewed your project and understand you need a clear, focused page that explains your offer and drives action. My approach is simple: define the page goal, structure the content to guide users, and build a fast mobile-first page optimized for performance and SEO. I avoid bloated designs and focus on clarity, speed and results. I can start with a clear section layout, incorporating your need for noise and pulse ringing issues in your engine tachometer project. Happy to discuss your goals and timeline. Nadia
$200 USD trong 14 ngày
0,0
0,0

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