Hire the best freelance Microcontrollers expert designers for your company

R&D / Electromechanical Engineer / Product & Prototype Development / Mechanical, Electronics, PCB & Software Design / Inventor – Turning Innovative Ideas into Real Devices / Open to Full-Time or Contr... Read more

R&D / Electromechanical Engineer / Product & Prototype Development / Mechanical, Electronics, PCB & Software Design / Inventor – Turning Innovative Ideas into Real Devices / Open to Full-Time or Contract Roles

Mechatronics engineering. Mechanical engineering and CAD specialist. Part modeling, machine and electro-mechanical system design. Gadget design and programming. Cnc machine design(mills, automatic... Read more

Mechatronics engineering. Mechanical engineering and CAD specialist. Part modeling, machine and electro-mechanical system design. Gadget design and programming. Cnc machine design(mills, automatic welders, drills, plotters, 3D printing, lathes) Convert pdf, jpg to technical drawings and 3D models. I am actively programming microcontrollers for the past 5 years(c, c++, java, python). PLC programming and automatisation. I have been an active member of some national projects: Montenegrin Wearable Robots Formula Student Montenegrin Autonomous Vehicles In these projects my role was designing electro-mechanical systems, 3D/2D/tehnical drawing, microcontroller programming.. My finishing project on faculty was cnc plotter machine, with A3 format of drawing/writing. Currently, I am working on 5 axis cnc metal milling machine for my master thesis.

I am an Electronics and Communication Engineer with experience in electronic hardware design, PCB design, embedded systems, and IoT development. I specialize in designing reliable electronic circuits,... Read more

I am an Electronics and Communication Engineer with experience in electronic hardware design, PCB design, embedded systems, and IoT development. I specialize in designing reliable electronic circuits, creating professional PCB layouts, and developing embedded solutions using Arduino, ESP32, and microcontrollers. My technical skills include PCB design, circuit design, embedded programming, RF PCB design, IoT systems, industrial automation, and hardware debugging. I also have experience using Altium Designer, KiCad, CST Microwave Studio, and Proteus for schematic capture, PCB layout, and RF simulation.

Thank you for visiting my profile. My name is Marko Aleksic, a dedicated electronic hardware and firmware engineer specializing in creating innovative and high-quality solutions for electronic product... Read more

Thank you for visiting my profile. My name is Marko Aleksic, a dedicated electronic hardware and firmware engineer specializing in creating innovative and high-quality solutions for electronic product development. I am passionate about transforming ideas into reality through meticulous design and development -Core Competencies: -PCB Design & Development: Expert in designing reliable, high-performance printed circuit boards (PCBs). Specialization in power supply circuits (DC-DC, AC-DC conversions) and multilayer designs for embedded systems. Proven track record in developing efficient LED driver circuits and RF PCB layouts. -Firmware Development: Extensive experience programming microcontrollers including STM32, DSPIC, ESP32 and ESP8266. Mastery of communication protocols such as UART, SPI, Ethernet, USB, CAN, and MODBUS for seamless integration. Proficient in implementing wireless technologies including Wi-Fi, Bluetooth, and ZigBee. -RF Design & Analysis: Strong capabilities in RF circuit design, antenna optimization, and simulation for applications like WiFi, Bluetooth, and RFID. Expertise in developing RF filters, splitters, transceivers, and power amplifiers tailored to specific application needs. I am committed to delivering cost-effective, high-quality solutions without compromising performance or deadlines. I welcome the opportunity to connect and discuss how I can contribute to your projects.

I am a multidisciplinary engineer specializing in the integration of mechanical design, electronics, and software development to deliver complete, real-world engineering solutions. With a strong found... Read more

I am a multidisciplinary engineer specializing in the integration of mechanical design, electronics, and software development to deliver complete, real-world engineering solutions. With a strong foundation across these domains, I bring a systems-level perspective that allows me to design, prototype, and implement projects from concept to deployment. On the mechanical side, I have extensive experience in CAD design, product development, and manufacturing-ready solutions. I focus on creating efficient, practical designs that consider real-world constraints such as materials, fabrication methods, and cost optimization. In electronics, I work with embedded systems, PCB design, and hardware integration. I am comfortable developing schematics, selecting components, and ensuring reliable communication between hardware and control systems. On the software side, I develop firmware and control logic for embedded devices, as well as higher-level applications for automation, data acquisition, and system monitoring. I have experience working with microcontrollers, PLCs, and industrial communication protocols, enabling seamless integration between hardware and software systems. What sets me apart is my ability to bridge these disciplines. Instead of treating mechanical, electrical, and software components separately, I design them as a unified system—resulting in more robust, efficient, and scalable solutions. I have worked on projects ranging from industrial automation and embedded systems to custom machinery and prototyping. I collaborate effectively with cross-functional teams, including mechanical engineers, electrical engineers, and software developers, ensuring smooth communication and successful project delivery. If you are looking for someone who can take ownership of a project end-to-end, reduce complexity, and deliver practical engineering solutions, I would be glad to help bring your ideas to life.

Final-year Bioengineering student with experience in designing and developing custom electronic devices, mechanical prototypes, and 3D printed parts. Skilled in CAD design, electronics, microcontrolle... Read more

Final-year Bioengineering student with experience in designing and developing custom electronic devices, mechanical prototypes, and 3D printed parts. Skilled in CAD design, electronics, microcontrollers, and signal processing. Projects include EMG-based hand gesture recognition, chiller system design, and custom sports/rehabilitation equipment. Detail-oriented, creative, and committed to delivering accurate, functional, and client-focused solutions.

Electrical Engineering Professional with over 3 decades of experience in the System-Level Architecture and Design of Radio Frequency (RF / Microwave / mmWave), Power Conversion (Linear and SMPS), Anal... Read more

Electrical Engineering Professional with over 3 decades of experience in the System-Level Architecture and Design of Radio Frequency (RF / Microwave / mmWave), Power Conversion (Linear and SMPS), Analog Mixed-Signal, Quantization and Linearization, Phase Lock Loops (PLLs) and Servo Control Systems, Motion-Control (Robotics), Digital Logic (FPGAs) and State Machines, Embedded (MCU, CPU, GPU, DSP, SoC), Electro-Magnetics (EMC), Electro-Optical (Video delivery, Displays, High Resolution Visible / IR / UV Cameras), and Electro-Mechanical disciplines for Space, Aerospace, Military, Defense, Aviation (Avionics), Medical, Marine, Automotive, Locomotive, Transportation, Industrial, Consumer, Wearables, Commercial, High Performance Computing, Data Communications, LAN/SAN/WAN, Telecommunication, Wireless Charging & IoT Sensors, Radio, Broadcast, and Motion Picture industries

18+ years of experience in electronic design. 100+ major design projects delivered. 200+ happy clients served. Whatever your electronic design needs are, reach out for a quick chat, you will not regre... Read more

18+ years of experience in electronic design. 100+ major design projects delivered. 200+ happy clients served. Whatever your electronic design needs are, reach out for a quick chat, you will not regret it! What to expect: ✅Top quality design that not only meets and exceeds your requirements but can also handle those unexpected conditions that make quality products stand out from the rest. ✅Rigorous design test and measurement that leaves nothing unchecked, keeping in mind not only your interests but also those of your end customers. ✅A design that is optimized and ready for manufacturing with parts readily available. ✅Exhaustive documentation and support so you can make best use of all deliverables. ✅A flexible service that can take care of all phases in the design and prototyping process or just those parts that you prefer. ✅Long-term availability for changes, revisions, and support. ✅Above all, an honest and friendly collaboration that you can trust. I invite you to reach out to discuss your project's unique needs. Regardless of your technical background, I am here to transform your product idea into a tangible reality, employing the most efficient and cutting-edge technology. My services extend beyond design, offering assistance in defining complete project requirements, recommending suitable technology, and guiding your product to production. I can also connect you with reliable suppliers and provide unwavering technical support throughout the entire process. As a full-time freelance engineer, having worked with clients from all over the world in very diverse applications, I’ve been able to gain a broad experience in electronic design. The designs I’ve produced over the years range from the simplest of designs to very complex high-density designs at the cutting edge of technology. I have gained experience with a variety of microcontrollers, processors, sensors, interfaces, protocols, and design architectures. I’ve also been able to utilize a variety to PCB technologies ranging from multilayer rigid, HDI, flexible, rigid-flex, metal-core, as well as exotic materials such as stretchable PCB. Throughout the years I’ve also invested significantly in a spacious lab and equipment for both prototyping (including pick-and-place, reflow oven and advanced JBC soldering equipment) as well as professional test and measurement equipment (including oscilloscopes, spectrum analyzers, VNA, bench meters, electronic loads, waveform generators, ECG simulator, thermographic imaging, and data loggers), all from reputable brands (Keysight, Teledyne-Lecroy, FLIR, Fluke, Tektronix, Pico,…). My vision is to produce top quality designs with a ‘whatever it takes’ attitude and am willing to invest effort and financially in ensuring that I am well equipped to do so. Some of the specific experiences include: Software tools: Altium Designer (my primary EDA), KiCad, Eagle, Proteus; SolidWorks; Ansys, Keysight-ADS, COMSOL; VS Code, Visual Studio, PyCharm, IntelliJ; Keil MDK Arm, GCC, IAR, CodeComposer, Microchip Studio; Quartus Prime, Xilinx ISE; Programming languages: Embedded C, C++, C#, Python, Rust, Java, VHDL, Bash scripts, PHP, javascript… Microcontrollers/SoC: STM32 (often preferred), ATSAM, STM8, nRF5x (often preferred for BLE applications), EPS32, CH32 (RISCV), C2000, CC2642, CC13xx, PIC16/18, AVR, MPS430, RP2040, i.MX, A20/50, RK35xx, MAX78000, … Protocols/Buses: RS485/422, USB, UART, SPI, I2C, CAN, LVDS, DDR; Modbus, NMEA2000, MQTT, … Common design features: - BLE / Wi-Fi with custom PCB trace antenna, fully simulated and tuned on prototypes. - USB charge circuit for Li-Ion battery, including fast charging. - Battery protection circuits and cell balancing. - PoE source/device/injector designs with necessary protocol handshakes. - ARM embedded processor design running embedded Linux system. - RTD measurement circuits, 3/4 wire, 24 bit, PGA and filtering. - ECG, EOG, EEG monitoring wearable designs. - IMU motion tracking with sensor fusion and quaternion streaming. - GNSS location tracking, including high precision RTK modes. - Audio capture, filtering, processing, and amplification. - DC/DC converters in various topologies including buck, boost, buck-boost, SEPIC, CUK, H-Bridge, cascaded, multi-phase. AC/DC converters (flyback, feed-forward, …). DC/AC inverters, BLDC control… - LED driving with attention to color rendering and thermal management. - Solar MPPT controller. - UHF long range wireless designs, LoRa, Sigfox. Cellular interfaces 4G, LTE, NBIoT, LTEM. My commitment to excellence, innovation, and collaboration has been the cornerstone of my career. I look forward to the opportunity to bring your vision to life, leveraging my extensive skill set and passion for electronic design. Feel free to contact me to embark on a successful journey together.

Hello, Everyone! I am an embedded systems engineer, PCB designer, and firmware developer with over 10 years of professional experience. I provide complete, end-to-end solutions for a wide range of ele... Read more

Hello, Everyone! I am an embedded systems engineer, PCB designer, and firmware developer with over 10 years of professional experience. I provide complete, end-to-end solutions for a wide range of electronic device designs, supporting clients from initial concept and schematic design to PCB layout, prototyping, assembly, and full system testing. I have strong expertise in high-speed PCB design, including PCIe and DDR4 routing, as well as precise impedance matching for reliable performance at high frequencies. I also specialize in RF and antenna design for modern IoT devices, ensuring optimal signal integrity and system efficiency. In addition, I have deep experience in ultra-low power design, achieving microamp and sub-microamp current consumption for battery-operated and wearable systems. I specialize in firmware development for LTE-GPS-LoRa-BLE-based embedded systems (nRF52 series), including low-power optimization and high-precision sensor acquisition. My focus is on delivering robust, production-ready solutions with high reliability and performance. 🔥 Main Skills 👉Embedded Systems 👉Schematic Circuit Design(Low Power consumption Design) 👉Firmware Development(All Microcontrollers-STM32, TMS320, ESP32, FPGA, nRF52, Raspberry PI) 👉PCB Design(High speed signal routing, PCIe, DDR4, 18 multi-Layers Design, RF antenna Design,) using Altium Designer, KiCad, EasyEDA, Fusion 360(No problem in DFM-JLCPCB) 👉IoT with nRF52(BLE), LoRa(for example, SX1262), LTE(SIM card interface), GPS and other variety of sensors 🛠️Tools & Technologies: 👉 nRF5 SDK / nRF Connect SDK 👉SEGGER Embedded Studio + J-Link debugging 👉 C/C++ (bare-metal & RTOS) 👉 BLE GATT, LTE AT commanders, custom wireless protocols 👉SPI / I2C / UART / ADC integration 👉Low-noise measurement systems (nA level) 👉STM32CubeIDE, Cube MX, Keil, CCS, Arduino, ... 👉MQTT, Free RTOS, Zephyr RTOS 🚀 I can support your project from concept to production.

I design electronic products, combining PCB design, embedded hardware and enclosure development. Main focus is helping to design products that are ready for manufacturing and real usage. I am student... Read more

I design electronic products, combining PCB design, embedded hardware and enclosure development. Main focus is helping to design products that are ready for manufacturing and real usage. I am student of Faculty of Electrical Engineering, where I learned and worked with software for designing and simulating semiconductor components, such as diodes, MOSFETs etc, as well as PCB design, embedded programming and embedded hardware development. Also, I have experience in jobs in the profession as I worked as R&D engineer, where my main focus was embedded programming and hardware development and as test engineer, where my main focus was to test electronic devices on various tests that aligns with test that are done in certification houses to check if devices would pass those certification house test and internal standards, such as EMI, resistance to electrical disturbances and many more. My portfolio includes: -various development boards (with STM32 and ESP32 microcontrollers); -USB 2.0 Hub with 4 outbound USBs, with full enclosure design; -Clock project with RP2040 microcontroller, light sensor, addresable LEDs, with full enclosure design; -ESP32 IoT project - includes relay, LED driver, humidity and temperature sensor, GPIO pins for additional peripherals; -Buck Converter - 9-36V input to 5V output with main focus on automotive compatible components. Skills I gained over the years while studying and working on jobs in the profession are: -PCB (Schematic, Layout) Design; -Embedded Hardware Design; -Microcontroller-Based Systems (STM32, ESP32, RP2040); -Power Supply Design; -Enclosure Design; -Prototype Development; -DFM; -Product Integration; -Hardware Debugging. Software I am skilled in: -Altium Designer; -KiCad; -EasyEDA; -Solid Edge; -LTSpice.

I am Md. Sanowar Hossin, an Electrical and Electronic Engineer with 13+ years of experience in electronics R&D. I specialize in high-quality PCB design and embedded systems development. My expertise i... Read more

I am Md. Sanowar Hossin, an Electrical and Electronic Engineer with 13+ years of experience in electronics R&D. I specialize in high-quality PCB design and embedded systems development. My expertise includes advanced PCB layout using Altium Designer, KiCad, EasyEDA, and Eagle. i was completed more then 1000 PCB Design for my clients. I work with Analog, Digital, Power Electronics and Microcontroller based systems. I have a deep background in microcontroller programming, having successfully completed numerous projects using AVR and PIC architectures, specifically the PIC16F, ATmega8, and ATmega16 series. Additionally, I am highly proficient in developing IoT and wireless solutions using Arduino, ESP8266, and ESP32 microcontrollers. I provide for client: * PCB Design (Single-layer, Double-layer, Multi-layer) * Reverse Engineering * Schematic Design from physical boards or images * Gerber, BOM, and Pick & Place File * Arduino and Embedded Hardware and programming. * PIC/AT-Mega Microcontroller Based Embedded system Hardware and programming. * DFM (Design for Manufacturing) * Component Placement and Routing Optimization * Silkscreen, Drill Files, and Layer Stackups * ESP32 Design * Gerber Files I provide unlimited reviews for my client.

In any robotics or embedded system project, hardware design is the backbone of success. A single design mistake can cause failures, but a well-structured circuit and PCB can maximize performance, reli... Read more

In any robotics or embedded system project, hardware design is the backbone of success. A single design mistake can cause failures, but a well-structured circuit and PCB can maximize performance, reliability, and efficiency. If you want to enhance your robot’s performance or ensure your control system runs smoothly — you’re in the right place! I’m Reem, an Electronics & Communications Engineering student with strong interest and hands-on experience in circuit design and PCB layout. I’ve worked on multiple projects using ESP32, Arduino, IR sensors, and motor control, where I handled schematic design, PCB layout, and manual fabrication. Alongside my technical background, I also support clients with professional document design, including Word files, PowerPoint presentations, and Canva slides — perfect for showcasing your technical work or training content clearly and attractively. 🔹 Services I Provide: Circuit design & simulation PCB layout (single & multi-layer) Component selection & datasheet analysis Embedded systems integration (ESP32, Arduino, microcontrollers) Preparing training materials & educational content Technical writing & structured documentation Designing Word and PowerPoint files with clear, professional formatting I aim to deliver reliable, well-documented, and organized work, with clear communication and a client-focused approach to ensure satisfaction and high-quality results. Let’s talk about your project! I’d love to understand your idea and help you turn it into a practical, efficient hardware solution. Feel free to reach out. I’m always happy to discuss your goals and suggest the best path forward.

With 25 years of experience, I design commercial and industrial products taking care of all the requirements and features of the design, prototyping and manufacturing. Italian living in Spain. My dai... Read more

With 25 years of experience, I design commercial and industrial products taking care of all the requirements and features of the design, prototyping and manufacturing. Italian living in Spain. My daily job is investigation and development of new technologies. You can benefit from my expertise if you are in need of innovation or you have an idea that nobody can't make it real. I provide better technologies, better ideas and better problems solving. I am a skilled electronic engineer, multi-language developer, inventor, circuit designer. I have a background of Linux/BSD servers admin and networks admin. My work ranges from developing space-grade electronic prototypes, deploying and managing large-scale data networks of IoT sensors to autonomous robotics design with AI. I love to get involved in projects with different technologies. I am constantly updated on new technologies and electronic trends. I am a good advisor on the best technologies you should integrate into your next project. I have a company about IoT sensors, custom circuit designs, autonomous robotics, and web API for data gathering and visualization through web services. One of my most relevant projects was the design of the avionics for a space satellite. During the development, I was able to integrate the top-quality components and adopt the most refined engineering methodologies. I am an outstanding project manager with excellent orders logistic, time scheduling, and employee management. I know how to design electronic circuits and how to optimize the PCB layouts for to pass compliance tests for the emission certification as per CE, FCC, UL regulations. My experience includes: -nRF52/53/54 bluetooth BLE chips from Nordic -nRF9161/51 LTE SoC with CAT-M1 and NB-IoT -ARM Cortex-M33 specialist -ultra low power IoT designs with LTE, LoRa, Bluetooth and 5uA during sleeping -IoT designs with sensors of any type -IMU fusion and motion sensors -Beaglebone Black, Raspberry PI, ODROID -Arduino, Teensy3.2+3.6+4.x, Spresense -design and firmware with NXP, STM32, Nordic, TI, Silabs ARM Cortex-M MCUs -Multilayer PCB layout designs -XBEE, Bluetooth BLE, WIFI, LTE -LoRa and LoRaWAN transceivers design with Semtech RF chips -Iridium sat embedded modems -Autonomous robots, ocean and ground -Wearable devices -Tracking devices with sensor -Solar panels design -Lithium battery rechargers with safety -Industrial heavy duty protocols and power electronics -Encoders and motor drivers -Automotive electronics design -Aerospace electronics, RF and avionics design -Machine learning on MCUs -CAN bus, RS485, 5-20mA protocols -Audio MIDI instruments design -DSP algorithms -Heterogeneous multicore architectures -JTAG, SWD, GDB, openocd, Segger J-Link -Jetson platforms from NVIDIA -Allied Vision cameras -CAD with FEM analysis -3D printed enclosures for electronics Software and firmware programming: -Zephyr RTOS on Nordic RF SOCs -Nuttx RTOS -custom embedded Linux OS with Yocto project -Linux OS (Raspberry PI, ODROID, ARM based) and servers: Ubuntu, Debian and ArchLinux -FreeBSD, NetBSD on embedded boards and servers -AI, machine learning, TinyML specialist -computer vision on NVIDIA Jetson boards. -PX4, MAVLINK, ROS and GAZEBO simulator -Python, C, C++, LUA, Perl -REST API via HTTPS and authentication -MATLAB, Octave, NumPy I can create custom RF circuits and antennas on PCB. I can run the required math and to provide the best impedance matching network. I can test the final RF circuit with my Vector Network Analyzer (VNA). I am specialist of IoT/LoRa/LTE frequencies. I do microelectronics SMT soldering and prototyping in my lab. I place components using a professional microscope. I mount components with dimensions down to 0402 or BGA type. I have good contacts in the industry for PCBs fabrication and for the massive production in different parts of the world. I do machine learning (AI) in microcontrollers installing into the firmware the inferences. I do training in the cloud. I am a specialist of TinyML on ARM Cortex-M33 MCUs. I am honored to be a returning, invited speaker for the BSD foundation, where I discuss BSD operative systems worldwide at annual conventions in Europe and North America. I have a private git server to manage all the files of my customers as remote accessible repositories so they can track the status on a daily basis. My monthly flat rate is 8000 Euro. I begin to work with an initial upfront payment, fully released of about the 30% of the total value of the project. I prefer to work at long term projects to take care of all the features and all the design process. I am also available for preliminary feasibility studies of new products with a final PDF report. I am the owner of a legal registered business in Spain to pay taxes and to provide all the engineering services. All the PDF invoices I send are declared and legal. Local EU regulations impose to send the PDF invoice to my customers to document the funds received.

- proficient in Catia v5 - I worked for 3 years in spacecraft industry - CSWP certified (SolidWorks PROFESSIONAL - Mechanical Design) - experience in logo design in Illustrator - very passionate about... Read more

- proficient in Catia v5 - I worked for 3 years in spacecraft industry - CSWP certified (SolidWorks PROFESSIONAL - Mechanical Design) - experience in logo design in Illustrator - very passionate about microcontrollers, electronics programming, IoT, etc ..

I am a highly skilled Electronics and Embedded Systems Engineer with a specialized focus on high-speed PCB design and system-level hardware integration. My expertise lies in bridging the gap between c... Read more

I am a highly skilled Electronics and Embedded Systems Engineer with a specialized focus on high-speed PCB design and system-level hardware integration. My expertise lies in bridging the gap between complex digital logic and physical hardware, having successfully designed and prototyped sophisticated multi-processor platforms and IoT solutions. ​Core PCB Design Competencies ​My technical proficiency spans the entire hardware development lifecycle, from initial schematic capture to manufacturing and prototyping workflows. ​High-Speed Interface Design: I have extensive experience routing and integrating high-speed protocols including PCIe, DDR3/DDR4, USB 3.0, Gigabit Ethernet, and MIPI CSI/DSI. ​Multi-Processor Architectures: My work includes designing complex boards that integrate CPLDs (EPM240) for deterministic IO, STM32 microcontrollers, and RK3568 Linux SBCs. ​RF & Wireless Integration: I specialize in the integration of LoRa (SX1276), GPS, Wi-Fi, and BLE modules, ensuring optimal antenna performance and signal integrity. ​Design Tools: I am certified and proficient in industry-standard EDA tools, including Altium Designer, KiCad, and EasyEDA. ​Proven Project Impact ​Universal Control Platform (2025): Acted as the system architect for a high-performance board featuring Hailo-8 AI accelerators via PCIe and complex MIPI camera interfaces. ​IGURU Farm GPS Tag System: Led the electronics design for LoRa-enabled livestock tracking collars, managing everything from PCB layout and antenna integration to rigorous field testing. ​Payment & Security Systems: Developed robust hardware for NFC/RFID payment terminals, implementing secure transaction logging to SPI flash and reliable network uplinks. ​With a focus on reliability and innovation, I leverage advanced prototyping workflows including JLCPCB integration to deliver high-quality electronic systems for industrial, agritech, and security applications.

I am an Electronics and Embedded Systems Engineer with strong experience in microcontrollers, PCB design, and electronic system prototyping. I specialize in developing embedded systems using ESP32 an... Read more

I am an Electronics and Embedded Systems Engineer with strong experience in microcontrollers, PCB design, and electronic system prototyping. I specialize in developing embedded systems using ESP32 and Arduino, as well as designing and simulating electronic circuits for real-world applications. My experience includes robotics systems, sensor integration, power electronics simulation, and PCB design. I have worked on projects involving motor control, ultrasonic sensors, IMU sensors (MPU6050), and real-time embedded programming. Technical Skills: • Embedded Systems Development (ESP32 / Arduino) • PCB Design (KiCad / Altium) • Circuit Design and Debugging • Power Electronics Simulation (PLECS / LTspice) • MATLAB / Simulink Modelling • Sensor Integration (Ultrasonic, IMU, IR Sensors) • Control Systems (PID) Example Projects: • Autonomous robot using ESP32 with ultrasonic obstacle avoidance and PID line-following • PCB design and hardware debugging for embedded systems • Power electronics simulation and analysis • Sensor-based control systems I focus on delivering reliable, well-documented solutions and clear communication throughout the project. If you need help with embedded systems, electronics design, or simulations, feel free to contact me.

I am an Electronics Engineer specializing in PCB design, embedded systems development, and complete product development from concept to production. My expertise includes schematic design, multilayer... Read more

I am an Electronics Engineer specializing in PCB design, embedded systems development, and complete product development from concept to production. My expertise includes schematic design, multilayer PCB layout, MCU firmware development, hardware debugging, and CAD modeling for enclosures and mechanical integration. I have experience reviewing and optimizing existing designs as well as developing fully custom solutions tailored to technical and business requirements. I support projects across the full development cycle: Requirements analysis and system architecture Schematic capture and PCB layout Microcontroller firmware development Prototyping and validation Design review and optimization Preparation for manufacturing I focus on building reliable, production-ready designs with strong attention to signal integrity, power management, EMI considerations, and manufacturability. My goal is to deliver efficient, robust, and scalable electronic solutions that meet both technical specifications and real-world application needs.

I am an electrical engineering student that is very interested in all the different types of engineering. I have been learning 3D printing, 3D modeling (Fusion 360), electronics, PCB design, programmi... Read more

I am an electrical engineering student that is very interested in all the different types of engineering. I have been learning 3D printing, 3D modeling (Fusion 360), electronics, PCB design, programming (microcontrollers, websites and apps), and prototyping. I put my skills to the test by challenging myself to difficult projects like my 3D-printed 6-axis Industrial-style robot arm. I designed everything about the arm including the circuitboards, software, and the arm itself. Although I am an electrical engineering student, I learned everything on my own through the web. I currently and studying electrical engineering in Corpus Christi Texas. My personal website: www.rondopia.com

A reliable electronics engineer and PCB designer with 15+ years of experience (trusted by clients worldwide) in PCB design, schematic capture, hardware development, and manufacturing support. I delive... Read more

A reliable electronics engineer and PCB designer with 15+ years of experience (trusted by clients worldwide) in PCB design, schematic capture, hardware development, and manufacturing support. I deliver production-ready designs that reduce risk, shorten development cycles, and work right the first time. My PCB designs are not only functional but manufacture able, testable, and scalable. With my 100% Job Success Score, I help clients turn ideas into robust, production-ready electronic products. My specialization is in circuit design, schematic capture, multilayer PCB layout, embedded systems, power electronics, RF and microwave circuits and analog circuits. I can do design reviews, hardware development, hardware debugging, reverse engineering, design optimization, troubleshooting and ensure your project is delivered with precision and attention to detail. ⭐ Core Expertise ⭐ ✅ Multilayer PCB designing ✅ PCB design with high speed interfaces, such as LVDS, HS-CAN, CAN FD, RS-422, RS-485, USB 3.0, FPGA high speed SerDes, PCIe, LVPECL, LPDDR4 clock, HDMI ✅ High power PCB design up to 4 layers, 3.2 KW, 320V output at 10A load current ✅ Design for Manufacturing (DFM) & Design for Assembly (DFA) using JLC PCB and PCB way services ✅ EMC / EMI aware PCB design practice using industry standards such as IPC-2221, IEC61188, DO-254 ✅ JLC PCB and LCSC parts selection, finding in-stock components, creating BOM with updated and available parts, finding alternate parts with similar technical specifications ✅ Generating Gerber files, NC Drill files, CPL files, BOM files for production, prototyping & mass manufacturing ✅ Schematic and PCB design review ✅ Circuit Designing, analog, digital, RF, microwave, embedded, high power circuit designing ✅ Circuit Simulation & Analysis ✅ Microcontroller Programming in C language ✅ Reverse engineering from given Gerber files, PCB images, BOM ✅ Problem solving, hardware development, troubleshooting, hardware debugging, design optimization for power, thermal, mechanicals constraints ⭐ PCB Design Software ⭐ ✅ Altium Designer v24 ✅ KICAD v9 ✅ DIP TRACE ✅ EasyEDA ⭐ Circuit Simulation Software ⭐ ✅ LTspice ✅ Proteus ✅ Multisim ✅ Keysight ADS ✅ Ansys HFSS ⭐ Programming ⭐ ✅ MPLAB X IDE ✅ C Language ✅ MATLAB SIMULINK ⭐ 3D Mechanical Design ⭐ ✅ SolidWorks ✅ PTC Creo ✅ Flow Therm ⭐ Power & analog circuit Projects ⭐ Power electronics, op-amp circuits, ADC/DAC interfaces, signal conditioning, piezo electric transducer driver, flyback converter, buck boost converter, laser diode driver, LED light driver, constant current and PWM control of LED lights, Switch Mode Power Supply (SMPS) design, linear power supply design, switching transformer magnetics design, AC load control using TRIAC, DC load control using SCR, H-Bridge driver for BLDC motor control using high power MOSFETS, gate driver circuit, multivibrator circuit using 555 timer, counter circuits, relay control, IGBT circuit for DC to AC inverter, bridge rectifier circuit for AC to DC converter ⭐ Industrial Projects ⭐ Temperature, humidity, weight, pressure sensors circuit design for instrumentation electronics, data logging, real time telemetry monitoring, signal conditioning circuit, feedback control circuits, robotics and actuator control, solenoid valve for flow control, PLC, DCS, SCADA for industrial automation, ⭐ RF Projects ⭐ X-Band and S-Band microwave RF power amplifier using GaN and GaAs devices, preamplifier, Directional coupler, band pass filter, Wilkinson divider, diplexer, microstrip transmission lines impedance matching, Low Noise Amplifier (LNA), mixer, microstrip patch antenna, electronic beam steering T/R modules, I/Q modulator, phased array circuits ⭐ Audio Projects ⭐ Audio Electronics: Amplifiers, filters, DSP-based audio processing, low-noise analog design, analog crossover network, equalizer, stereo and mono dual channel amplifier, phono preamplifier, hydrophone amplifier, MEMS based microphone array design, electret microphone amplifier, CODEC, RCA to XLR converter, phantom power supply, audio power amplifier for 8 and 4 ohm loud speakers, ⭐ Digital Electronics Projects ⭐ Digital logic circuits using discrete ICs, sequential circuit, NAND Flash memory circuit, mixed signal circuit using RF transceiver blocks with SMA connectors, FMC HPC connectors, high speed signaling with FPGA Actel, Xilinx, DSP controller from microchip, microcontrollers from Silabs, PIC, ATMEL C8051, ATMEGA, TMS320F28335, ESP32-C5, ESP32-S3, STM32, RPI, ARDUINO ⭐ Why Clients Choose Me ⭐ ✅ End-to-End Capability — from concept → schematic → PCB → firmware → prototype. ✅ High-Speed PCB Specialist —Impedance controlled routing and EMC/EMI aware designs ✅ Strong Communication — clear documentation, regular updates, and fast responses. ✅ Proven Track Record — 15+ years of hands-on design experience. ✅ Client Satisfaction — long-term ▒▒▒▒▒▒ client relationships, repeat contracts, and 5⭐⭐⭐⭐⭐ feedback

I’m a Mechanical Designer with a strong focus on 3D printing, 3D scanning, and reverse engineering. I enjoy taking ideas from concept to reality—whether that means creating precise CAD models, designi... Read more

I’m a Mechanical Designer with a strong focus on 3D printing, 3D scanning, and reverse engineering. I enjoy taking ideas from concept to reality—whether that means creating precise CAD models, designing parts for manufacturing, or developing functional prototypes. I’ve worked across different areas, from automotive reverse engineering to consumer product design, and I like combining both mechanical and electronic skills to solve problems. Alongside CAD and design work, I’ve been building up my experience in electronics, circuits, and embedded systems (Arduino, microcontrollers, and prototyping). Right now, I’m focused on expanding into product development and prototyping while continuing to grow my side projects in 3D scanning, CAD services, and custom fabrication.

I am a Mechatronics Engineering graduate passionate about embedded systems, robotics, and electronics. I specialize in Embedded C development, writing efficient, low-level firmware for microcontroller... Read more

I am a Mechatronics Engineering graduate passionate about embedded systems, robotics, and electronics. I specialize in Embedded C development, writing efficient, low-level firmware for microcontrollers. I have experience in Arduino-based prototyping and hardware-software integration. I also design schematics and multi-layer PCBs using KiCAD, focusing on signal integrity, power management, and manufacturable designs. I am driven to solve real-world problems through innovative hardware and software solutions. Feel free to reach out for end-to-end embedded solutions.

I am an experienced Electrical & Electronics Engineer with over 20 years of expertise in industrial communication systems, electronics design, and mechanical product development. My unique strength li... Read more

I am an experienced Electrical & Electronics Engineer with over 20 years of expertise in industrial communication systems, electronics design, and mechanical product development. My unique strength lies in combining electronics engineering with mechanical design using SolidWorks, enabling me to deliver complete solutions from concept to production. I have successfully managed and executed projects in maritime communications, petrochemical plants, port security systems, and audio equipment design. My background as both an engineer and a CEO gives me strong project management skills and the ability to deliver high-quality results on time.

Robotics expert and independent electronics engineer with over 10 years of experience in programming for different hardware including microcontrollers, FPGAs, SoCs, SDRs and in different languages (C,... Read more

Robotics expert and independent electronics engineer with over 10 years of experience in programming for different hardware including microcontrollers, FPGAs, SoCs, SDRs and in different languages (C, C++, Python, LabVIEW, Matlab, etc.). Extensive hands-on experience with hardware development and testing from prototypes to production units. Always up to date with the latest technologies like generative AI, swarm robotics, next generation wireless communication. Involved in open-source research and talent development.

a mechanical engineer who love to design something new.

a mechanical engineer who love to design something new.

Detail-oriented PCB designer with hands-on experience in creating efficient, reliable circuit layouts for embedded systems and robotics. Skilled in single and multi-layer PCB design, power management,... Read more

Detail-oriented PCB designer with hands-on experience in creating efficient, reliable circuit layouts for embedded systems and robotics. Skilled in single and multi-layer PCB design, power management, and signal integrity. Proficient in KiCad and experienced in integrating components like buck converters, sensors, and microcontrollers (Arduino, ESP32). Proven ability to deliver compact and field-ready designs, such as the Minesweeper 2024 robot, with a focus on performance, flexibility, and real-world durability.

I'm an expert electronic engineer, I've worked in three different London startups in the past 6 years, and I have a PhD in electronic engineering. Over the years, I built up a lot of experience in var... Read more

I'm an expert electronic engineer, I've worked in three different London startups in the past 6 years, and I have a PhD in electronic engineering. Over the years, I built up a lot of experience in various electric and electronic fields. Now I work as a freelance and I deal with all sorts of electronic projects, the more challenging, the better. I specialize in fast prototyping, I'm a very quick designer and I can build prototypes in house, thanks to my reflow oven and soldering skills. I have experience in wearables, IoT, wireless sensor networks, long-range wireless systems, ultra-low-power electronics, energy harvesting, industrial and power electronics, and much more. I have a deep knowledge of microcontrollers and SoC of many brands, and I can write firmware for prototypes. Find below a more detailed list of skills: – 10 years embedded systems design experience in a wide range of applications: wearables, wireless sensor networks, energy harvesting, automation. – Extensive knowledge of MCUs and SoC (BLE, Wifi, LowPAN, Zigbee), MEMS, SMPS, GPS, RFID, sensors, actuators, motors, primary and secondary batteries. – Design of production testing Jigs, design for manufacturing, EMC compliance and CE marking, supply chain management, production line direct experience (Shenzhen, Taipei). – Strong background in ultra-low-power systems, miniaturization and Energy Harvesting power supply. – PCB editing (Altium, Eagle, Cadence), multilayer and flexible PCB, RF optimisation, antenna placement and antenna tuning through Vector Network Analyser (BLE, Sub GHz). – Wide laboratory experience in electronic fast prototyping (SMT soldering: 0201, 0.4mm pitch SMAs), circuit debugging and electronic measurement instrumentation. – Extended knowledge of the photovoltaic technology: mass power generation and micro generation for energy harvesting. – Extended experience with other forms of energy harvesting as MFC (Microbial Fuel Cell), vibrational, thermal, etc... – IC design using the most common electronic CADs.

Mechatronics Engineer | Embedded Systems & ROS Developer I bridge the gap between complex software and physical hardware. As an entrepreneur and Director of Product Development, I don't just write co... Read more

Mechatronics Engineer | Embedded Systems & ROS Developer I bridge the gap between complex software and physical hardware. As an entrepreneur and Director of Product Development, I don't just write code—I build, simulate, and launch functional, market-ready products. Whether you need a robot simulated in a virtual environment, custom firmware for an IoT device, or high-precision mechanical CAD, I deliver production-ready solutions. Core Skillsets & Strengths: Robotics & Autonomous Systems: ROS (SLAM mapping, RViz, Gazebo simulation, RPLIDAR integration). Embedded Systems & IoT: ESP32, FPGA logic, sensor fusion, and closed-loop PID control. CAD & Digital Manufacturing: SolidWorks mechanical design, 3D printing, and custom CNC development. Executive Leadership: Proven ability to manage software teams, budgets, and end-to-end product lifecycles. Key Accomplishments & Projects: Market Success: Spearheaded the development and successful market launch of a commercial smart Water Management System and an upcoming Smart Touch Switch line at Demetronics (Pvt) Ltd. Venture Founder: Co-founded printtheory, a digital manufacturing venture where we engineered and built custom CNC machinery from scratch. Competitive Robotics: Designed and fabricated a custom autonomous warehouse logistics robot (ASRS) for the National Engineering Robotics Contest (NERC 2026). Education: B.S. Mechatronics Engineering student (Bridging advanced manufacturing, academic research, and active field implementation).