Omojmlaferznmi Micheal's Work | ContraWork by Omojmlaferznmi Micheal
Omojmlaferznmi Micheal

Omojmlaferznmi Micheal

PCB Designer and Embedded Systems Engineer

    9
    Followers
Followed by Kraig M, Muhammad Asad K, and Abdulqoyyum A

Lagos, Nigeria

WorkPostsServicesAbout

Lagos, Nigeria

Cover image for I am an electronic engneer
I am an electronic engneer
2
166
Cover image for Electronic Engineer Needed for PCB
Electronic Engineer Needed for PCB Design & Embedded Systems Project I'm looking for an experienced Electronic Engineer to help develop a custom hardware project from concept to production. Project Scope Electronic circuit design Schematic capture PCB layout (2–6 layers) Component selection and BOM creation Embedded firmware development (ESP32, STM32, Arduino, or similar) Prototype testing and debugging Manufacturing-ready Gerber files and documentation Required Skills PCB design using Altium Designer, KiCad, EasyEDA, or Eagle Analog and digital circuit design Microcontroller programming in C/C++ Knowledge of power supply, communication protocols (I2C, SPI, UART, CAN), and debugging tools Experience preparing designs for manufacturing Nice to Have IoT product development Wireless modules (Wi-Fi, Bluetooth, LoRa) 3D enclosure design EMC/EMI and signal integrity knowledge Deliverables Complete schematic files PCB layout files Gerber files Bill of Materials (BOM) Firmware source code Documentation for manufacturing and assembly Please share examples of similar electronics or embedded systems projects you've completed, along with the tools you use and your estimated timeline.
2
2
256
Cover image for I am an Electronics Engineer
I am an Electronics Engineer specializing in PCB design, embedded systems, and firmware development. I help startups, companies, and inventors develop reliable electronic products from concept to prototype. My services include: • PCB Design (KiCad, Altium Designer) • Schematic Design • Embedded Firmware (ESP32, STM32, Arduino) • Hardware Prototyping • IoT Device Development • Gerber Files & BOM Preparation I am open to freelance projects, remote opportunities, and technical collaborations.
2
3
285
Cover image for Project Brief: Stereo Tube Amplifier
Project Brief: Stereo Tube Amplifier Design (From Scratch) The goal of this project is to design a complete stereo tube amplifier from scratch, with a focus on proper engineering, stable operation, and high-quality audio performance. The design should be practical to build and test, with clear documentation and predictable results. Given Requirements / Constraints: Preamp: 1 × 6SN7 (shared between both channels) Power stage: 2 × 6V6 (one per channel, single-ended) Rectifier: 5U4 Power transformer: Hammond 272DX (144mA B+ max) Output transformers: Custom, 5kΩ primary, 55mA max, gapped for 20Hz–20kHz HiFi use Input signal: 1–1.5V nominal (2V max line level) Target output: ~5W per channel at 2V input Voicing: Final tonal shaping can be adjusted via coupling capacitor selection Scope of Work: Full circuit design of the preamp and power stages Proper biasing of all tubes (preamp and power) Power supply design including rectification and filtering Gain structure design to meet input/output targets Operating point calculations and validation Integration of all stages for stable and optimal performance Deliverables: Complete, clean schematic (build-ready) Clearly defined component values and operating points Notes on design choices and expected performance Guidance for implementation, testing, and initial troubleshooting Objective: To create a well-balanced, reliable amplifier design that meets the specified performance targets, minimizes distortion and noise, and avoids iterative trial-and-error during the build process.
2
197