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* PCB Design * Microcontroller Programming * Embedded Systems * I am a Hardware Engineer with 6+ years of experience in PCB Design, Microcontroller Programming, and Embedded Systems development. I specialize in building robust Hardware solutions using ESP32, STM32, Arduino, and Raspberry Pi platforms. From initial Schematic capture in Altium or KiCad to final production-ready devices, I deliver high-performance electronics that work in the field. 📍 Core Services: 1. Professional PCB Design & Schematic Capture - High-quality PCB Design delivery using industry-standard tools like Altium and KiCad. - Schematic development and PCB Design for multilayer boards. - Hardware Design focusing on DFM/DFA (Design for Manufacturing). - Expertise as a PCB Designer in Altium Designer, KiCad PCB, and EasyEDA. - PCB Design for PCB Audio, RF, and high-speed digital interfaces. - Professional PCB Design and Circuit Designer services for Electronics projects. 2. Expert Microcontroller Programming & Firmware - Expert Microcontroller Programming for diverse industrial and consumer platforms. - Microcontroller Programming for ESP32, STM32, Arduino, and Raspberry Pi. - Embedded Systems development using Embedded C and C language. - Custom Firmware and Embedded Software for Embedded Systems IoT applications. - Advanced Microcontroller Programming for ESP32 Firmware, STM32 HAL, and Arduino Programmer tasks. - Embedded Systems and Microcontroller Programming for Robotics and Python-based logic. 3. Strategic Leadership & IoT Solutions - I lead ARTAXE Electronics, a hardware engineering team. As CEO and Electronics Engineer, I ensure every Embedded Systems project is scalable and commercially viable. - IoT architecture for ESP32 and Raspberry Pi systems. - Embedded Systems Engineer services for Embedded Systems with long-range connectivity. - Integration of Schematic designs with Antenna Design and PCB Firmware. - Deployment of Embedded Systems for AgTech (PivotHawk) and industrial monitoring. 4. Mechanical Design & Enclosure Development - Bridging the gap between an Electrical Engineer and a Mechanical Engineer. - Mechanical Design using SolidWorks, AutoCAD, and CAD tools. - Enclosure Design and Industrial Design for IP-rated devices. - Professional Mechanical Design Engineer and Enclosure Designer support. - Mechanical Designer services for custom Hardware housing. Why Partner With Me❓ ✅ Altium & KiCad Mastery: Expertise in Altium for high-end professional projects and KiCad for open-source flexibility. The workflow in Altium ensures precision, while KiCad provides cost-efficiency. ✅ Prototyping & Production: I don't just create a Schematic; I deliver a working device. From Arduino prototypes to STM32 production units. ✅ Comprehensive Hardware Support: Every Hardware project includes a thorough Schematic review and PCB Design Circuit Design validation. ✅ Reliable Microcontroller Programming: Providing Embedded Engineer grade code for ESP32, STM32, and Raspberry Pi nodes. 💡 Technical Toolkit: ✅ Software: Altium, KiCad, EagleCAD, EasyEDA, SolidWorks, AutoCAD. ✅ Platforms: ESP32, STM32, Arduino, Raspberry Pi, nRF52, i.MX8. ✅ Focus: Embedded Systems, IoT, PCB Design, Microcontroller Programming. Ready to bring your hardware vision to life❓ From the initial Schematic stage to the final PCB Design and production support, I am dedicated to your project's success. Whether you need a simple prototype or a complex Hardware system, let's discuss how my expertise can drive your innovation forward. ❗ Click the "Message" or "Invite" button to start a conversation about your project today❗

❤Thank you for visiting my profile.❤ My name is Tetiana Medetska, 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.

Main work profile: battery chargers, USB Power Delivery, analog interfaces for sensors, low and high-speed ADCs, Bluetooth and wired data exchange, onboard local power sources (step-up, step-down, etc...), making basic firmware for: STM32, ESP32, PIC, AVR using native frameworks or/and Arduino framework, libs for attached hardware. Optimizing schematics/PCB/BOM (simple IoT or simple devices based on most popular components) for fast and low cost prototypes assembly. Experience in electronics design - 21 years Deep knowledge in Altium Designer, KiCAD and P-CAD. Also can freely work in EasyEDA, Diptrace, Eagle, MultiSim

✅ 100% Client Recommendation ✅ Top Embedded and Firmware developer ✅ Top Hardware designer ✅ Top Software design ✅ Top Mechanical design and industrial design ✅ Top Enclosure design Services: 1) Hardware/Electronics design (Power, Analog, Digital/High-speed and RF electronics design) 2) Precertification testing (EMI, ESD, EMC, FCC, CE, UL) 3) Firmware design С/C++ (Bare metal MCU/MPU, FreeRTOS, Zephyr RTOS, Embedded Linux, Wireless protocols, Security, Interfaces, etc) 4) Industrial and Mechanical design (Enclosure design, 3D printing, IP standards, Prepare all for injection molding, etc) 5) UX/UI design (Embedded devices with displays, Mobile and Desktop applications) 6) Software design (Android, IOS, Linux kernel and user space development) 7) Embedded Quality Assurance(QA) and testing 8) Manual verification/testing PCB/FPC, functional and unit testing of the Firmware/Software, stress testing, temperature range testing Service->Hardware design service: - Power electronics design: (PFC, Solar charging controller, chargers, high voltage control, Motor controllers DC/AC/BLDC ) - Analog electronics design: High-accuracy analog measurements, Noise filtration, Digital to analog conversion, Amplifying signal - Digital and high-speed electronics design: - Memories DDRx/LPDDRx, SDRAM, Camera and display interfaces (MIPI-DSI, MIPI-CSI, DisplayPort, etc), Data communication interfaces (QSpi, SPI, UART, I2C, FMC, I2S, USB 2/3.x, etc), ( - RF Designs: ( 50-60 GHz (Radars), 1-6 GHz (UWB, Wifi, BLE, ZigBee, GPS, NB-IoT, LTE-M/LTE, Z-Wave, etc), 13,6 MHz, 128 kHz (NFC, RFID, etc), 433 MHz (Custom protocols) Service->Industrial and Mechanical design - Industrial design of the sketch - it includes a few sketch designs, depending on the physical sizes of the device, specific of industry and user experience - Mechnical CAD design with deep PCB integration - it includes full mechanical draw based on the industrial design with detailed sizes, materials and manufacturing specific. - Thermal calculation and simulation - it includes simulation of the heating device inside enclosure, with theoretical cooling calculation - 3D printing and verification - we use 3D printer hp jet fusion 5210, with a very nice quality of printing, that helps us to make a good verification of parts with PCBs - Injection molding - the last step, which includes manufacturing optimization and making pres forms, preparing documentation for the manufacturing Service->Firmware design С/C++: - Languages: C/C++, Assembler - Diagrams: Block, UML, Workflow, APIs - Interfaces: I2S, SAI, MIPI-DSI, MIPI-CSI, USB 2/3.x, LTDC, DDR3/DDR4/LPDDR4, I2C, SPI/QSPI, UART, CAN, Ethernet - Wireless: NB-IoT, LTE M, GPRS, GPS, LTE, UWB, WiFi, BLE, ZigBee, Z-Wave, LoRa, Thread, 6LoWPAN, Sub 1GHz, NFC (13,6 MHz), RFID 433 MHZ and 128 kHz - Protocols : MQTT, HTTP, FTP, Modbus TCP/RTU, SNMP, TCP/IP, UDP/IP, DLMS, custom protocols - Security: AES, SSL/TLS, custom algorithms - Libs and frameworks: TouchGFX (GUI lib for MCU), emWin (GUI lib for MCU), LVGL (GUI lib for MCU), WolfSSL (SSL/TLS), Mbed TLS(SSL/TLS), osxMotionFX (Sensors fusion algorithm based on the Kalman theory), FatFS, lwIP (TCP/IP stack), WICED (Wifi stack), aws/amazon-freertos, Paho MQTT, TensorFlow - Embedded OS: FreeRTOS, TI-RTOS, ZephyrOs, Embedded Linux, Yocto, ROS - MCUs: NXP (i.MX RT1064, LPC1100, LPC4000), Nordic (NRF52xx/NRF53xx/NRF91xx), TI (CC3220/CC26xx/CC1100/CC3200, MSP430), Espressif (esp32, esp8266), ST(STM32H7/F7/F4/L4/F0/L0/WB/WL/G0 and STM8), Atmel/Microchip(SAM D20/D21/L21/R21/V70/V71, SAMA5/SAM4/SAMD4), Silicon Labs(EFR32, ZGM130S), Cypress (PSoC 3/PSoC 4), Kinetis (Family MK81FN256VDC15), Holtek (HT68xx) - MPUs: Analog Devices (ADSP-2156x SHARC), Qualcomm (Snapdragon 625/425/610/845), Allwinner (A64, A33, H3, H6 series), NXP (I.MX6/I.MX7/I.M8) , ST(STM32MP1) - SOMs: NVIDIA Jetson nano, NVIDIA Jetson Orin Nano, NVIDIA Jetson AGX Orin, Toradex (Colibri iMX6, IMX7, IMX8), Raspberry pi (CM3, CM4 modules), Inforce (Qualcomm Snapdragon 410, 820, 845 SOM), 8devices (Mango on Qualcomm IPQ6000/IPQ6010 Soc), Sensiedge(SensiBle 1 and 2, SensiLora) Service->Software: - Languages: Java, Kotlin, C#, C/C++, Python, Java Script - Diagrams: Block, UML, Workflow, APIs - Interfaces: USB, Ethernet - Protocols : MQTT, HTTP, FTP, Modbus TCP/RTU, SNMP, TCP/IP, UDP/IP, DLMS, custom protocols - Wireless: BLE, WiFi, UWB - Security: AES, SSL/TLS - Libs and frameworks: GStreamer, Paho MQTT, WolfSSL (SSL/TLS), Mbed TLS(SSL/TLS), QT framework, Xamarin Forms and Maui, ASP .NET Core and web development, React (web UI development), SQLite DB, FireBase DB, Mong DB, InfuxDB DB, Room, TensorFlow, Node.js - OS: Android, IOS, Linux, Windows

Electronics & Embedded Engineer (PCB + firmware) with strong RF and Power Electronics experience. I help startups and product teams turn an idea into a working prototype - and then into a production-ready design with clear scope, milestones, and predictable execution. ✅ What I deliver end-to-end • Requirements clarification/feasibility, system architecture, component selection, BOM planning • Schematics + low-noise, multi-layer PCB design (Altium / KiCad), bring-up, debugging • Embedded firmware (C/C++), low-power optimization, stability, OTA/update strategy • Prototype build support, validation, DFM/DFT, manufacturing handoff (Gerbers, BOM, assembly docs) ⚙️ Relevant domains • RF & connectivity: BLE / Wi-Fi / LTE / GNSS / Sub-GHz, matching networks, integration constraints • Mesh systems: BLE Mesh / Thread / Zigbee-type networks (roles, provisioning, reliability) • Automotive: CAN / LIN integration, power/EMC constraints, rugged design approach • Power electronics: AC/DC, DC/DC, battery systems, charging, protection, power path, thermal/efficiency considerations • MedTech / wearables: sensor integration and comfort-driven form factor constraints • AI-driven devices: sensor fusion + on-device inference (TinyML/edge-style) where it fits How I work: clear scope + milestones, weekly updates, and practical engineering decisions focused on reliability and manufacturability. NDA-friendly. No purchases without written approval. You receive full sources + manufacturing files. ❗Invite me to your job or message me with your idea - I’ll respond within 24 hours with the right questions and a clear next step. Keywords: PCB Design, Embedded Systems, Firmware, Altium Designer, KiCad, Low-Noise PCB, Flexible PCB, STM32, nRF52/nRF53, ESP32, RF, BLE, Wi-Fi, LTE, GNSS, LoRaWAN, MQTT, CAN, LIN, AWS IoT, AC/DC, DC/DC, Battery, BMS, DFM, DFT, Prototyping, Manufacturing Support, Wearables, MedTech

ELECTRONIC ENGINEER PCB Designer (THT & SMT), Radioelectonics, Microcontroller programming, Arduino, Power Electronics, DIY. Experience 5+ years with Altium, KiCAD, EasyEDA, DipTrace. Prepare for ordering PCB & Assembly from JLCPCB. Schematic & Modelling on Proteus, NI Multisim Programming AVR (Atmel) microcontrollers