{"version":1,"resultDescription":{"count":7,"showResultCount":false,"emptyResultLabel":"No freelancers matching your search criteria were found","notEmptyResultLabel":"7 results found"},"results":[{"isHero":false,"profileUrl":"https://www.workana.com/freelancer/029c453dddb86e9dfb890ff089da29f4","profileLogoUrl":"https://cf.workana.com/logos/ab/3dabb49bad4b6baead1c2276acd809/QQ-Tu-Pian20180305100629.jpg","profileName":"Li X.","hash":"029c453dddb86e9dfb890ff089da29f4","roleName":null,"tagline":"Electronics Engineer","isVerifiedAgency":false,"rating":5,"ratingLabel":"5 of 5.00","completedProjects":3,"badges":[{"title":"Freelancer bronze","size":"small","position":"bronze","profile":"","type":"bronze"}],"country":{"name":"China","img":"

","searchLinkUrl":"https://www.workana.com/jobs?country=CN"},"completedProjectsForView":"3","dangerouslyWillBeRenderAsHtml_description":"It is my will to make new products and intelligent products to guarantee better life.
I graduated from Beijing University of Technology, China and received a bachelor's degree in computer engineering. Since then I have accumulated over 15 years of expertise in device control and process control as an embedded expert.
In 2005, I realized control of theater stage equipment by Ethernet using the ADAM PLC product of a Taiwanese company, and implemented control of printing and food facilities by ladder program using PLCs including Mitsubishi, Delta (Uk), and Master-K (Korea) .
As a microcontroller programmer and electronics engineer, I made a lot of intelligent products useing microcontrollers such as AVR, PIC, and 8051 series and performed many projects such as temperature and humidity and speed control in the power plant and food sectors.
In particular, it holds two domestic patents for five years, developing camera surveillance system, accident surveillance system and alarm product.
Main skills:
# Software Language and Programming
- C language
- Microcontroller Programming
* AVR programming by AVR studio 4.0 and AVR studio 7.0
* PIC programming by MPLAB,MPLAB X,CCS,MikroC
* 8051core programming by Keil
- PLC ladder and C Programming
Simens,Master-K,ADAM,Delta,Mitsubishi,GMT .. programming by
self professional software tools
# Hadware Design and Design Tools
- Electronic Circuit and PCB design ( Altium, Eagle, Kicad, Pads..)
- Proteus and MultiSim design and simulation
- LogicSim design","canInvite":false,"shouldShowHireMeDialog":false,"sameAsLoggedInCompany":false,"position":"bronze","hourlyRate":"USD 25.00","hourlyWorkedProjects":0,"lastActiveLoginRelativeToUser":"March 05, 2024 23:30","lastActiveLoginRelative":"Last year","registeredSinceRelativeToUser":"March 12, 2020 06:51","registeredSinceRelative":"5 years ago","recentBreaches":{"value":0,"label":"0 recent violations"},"workerSkills":[{"anchorText":"PCB Design (+10 years)","anchorLink":"https://www.workana.com/en/hire/pcb-design","isCertified":false,"title":"PCB Design - Freelancers"},{"anchorText":"Arduino (5 to 10 years)","anchorLink":"https://www.workana.com/en/hire/arduino","isCertified":false,"title":"Arduino - Freelancers"},{"anchorText":"PLC (5 to 10 years)","anchorLink":"https://www.workana.com/en/hire/plc","isCertified":false,"title":"PLC - Freelancers"}]},{"isHero":false,"profileUrl":"https://www.workana.com/freelancer/b148d66d88d919d2c209d013803f6955","profileLogoUrl":"https://cf.wkncdn.com/static/assets/build/img/logos/default_logo_1-normal.opti.74f50d270.webp","profileName":"M. S.","hash":"b148d66d88d919d2c209d013803f6955","roleName":null,"tagline":"Embedded System Developer","isVerifiedAgency":false,"rating":0,"ratingLabel":"No ratings yet","completedProjects":0,"badges":[{"title":"Freelancer iron","size":"small","position":"iron","profile":"","type":"iron"}],"country":{"name":"China","img":"

","searchLinkUrl":"https://www.workana.com/jobs?country=CN"},"completedProjectsForView":"0","dangerouslyWillBeRenderAsHtml_description":"I am an embedded system developer from china.
Since 2004 when I was a high school student, I started programming with desktop applications on Windows, Linux with C++ & QT, HTML, PHP.
Since from 2005, I developed some big embedded systems, such as elevator control system, crane automation system, etc.
- Elevator control system
All PCB boards are designed by my own way. (I manages a small PCB design & 2D-3D CAD team)
And all software developed by me. (by STM32F1xx, 2xx Series)
It tested by an elevator company of Su Zhou China.
- Crane Automation System
In addition, I've joined some projects such as water management system, the air purification system of hotel.
During this period, I have accumulated a lot of experience.
Now I am ready for serve your request about embedded system, specially embedded OS, industrial communication, wireless communication, PCB design and layout, autocad, solidworks.
Thanks","canInvite":false,"shouldShowHireMeDialog":false,"sameAsLoggedInCompany":false,"position":"iron","hourlyRate":"USD 10.00","hourlyWorkedProjects":0,"lastActiveLoginRelativeToUser":"August 10, 2019 13:03","lastActiveLoginRelative":"6 years ago","registeredSinceRelativeToUser":"August 10, 2019 13:06","registeredSinceRelative":"6 years ago","recentBreaches":{"value":0,"label":"0 recent violations"},"workerSkills":[{"anchorText":"Embedded System","anchorLink":"https://www.workana.com/en/hire/embedded-system","isCertified":false,"title":"Embedded System - Freelancers"},{"anchorText":"PCB Design","anchorLink":"https://www.workana.com/en/hire/pcb-design","isCertified":false,"title":"PCB Design - Freelancers"},{"anchorText":"SolidWorks","anchorLink":"https://www.workana.com/en/hire/solidworks","isCertified":false,"title":"SolidWorks - Freelancers"}]},{"isHero":false,"profileUrl":"https://www.workana.com/freelancer/4219ca7a79cc6237bf0fc86b5c2c26e0","profileLogoUrl":"https://cf.wkncdn.com/static/assets/build/img/logos/default_logo_1-normal.opti.74f50d270.webp","profileName":"A. A.","hash":"4219ca7a79cc6237bf0fc86b5c2c26e0","roleName":"Electronic technician","tagline":null,"isVerifiedAgency":false,"rating":0,"ratingLabel":"No ratings yet","completedProjects":0,"badges":[{"title":"Freelancer iron","size":"small","position":"iron","profile":"","type":"iron"}],"country":{"name":"China","img":"

","searchLinkUrl":"https://www.workana.com/jobs?country=CN"},"completedProjectsForView":"0","dangerouslyWillBeRenderAsHtml_description":"","canInvite":false,"shouldShowHireMeDialog":false,"sameAsLoggedInCompany":false,"position":"iron","hourlyRate":null,"hourlyWorkedProjects":0,"lastActiveLoginRelativeToUser":"April 17, 2024 10:59","lastActiveLoginRelative":"Last year","registeredSinceRelativeToUser":"April 17, 2024 10:59","registeredSinceRelative":"Last year","recentBreaches":{"value":0,"label":"0 recent violations"},"workerSkills":[{"anchorText":"PCB Design (3 to 5 years)","anchorLink":"https://www.workana.com/en/hire/pcb-design","isCertified":false,"title":"PCB Design - Freelancers"},{"anchorText":"Circuit Design (3 to 5 years)","anchorLink":"https://www.workana.com/en/hire/circuit-design","isCertified":false,"title":"Circuit Design - Freelancers"},{"anchorText":"Technical Support (3 to 5 years)","anchorLink":"https://www.workana.com/en/hire/technical-support","isCertified":false,"title":"Technical Support - Freelancers"}]},{"isHero":false,"profileUrl":"https://www.workana.com/freelancer/21c0a4eef889a5d193274ca7d73b3860","profileLogoUrl":"https://cf.wkncdn.com/static/assets/build/img/logos/default_logo_1-normal.opti.74f50d270.webp","profileName":"D. L.","hash":"21c0a4eef889a5d193274ca7d73b3860","roleName":"Electrical engineer","tagline":null,"isVerifiedAgency":false,"rating":0,"ratingLabel":"No ratings yet","completedProjects":0,"badges":[{"title":"Freelancer iron","size":"small","position":"iron","profile":"","type":"iron"}],"country":{"name":"China","img":"

","searchLinkUrl":"https://www.workana.com/jobs?country=CN"},"completedProjectsForView":"0","dangerouslyWillBeRenderAsHtml_description":"XXXXXXXXXXXXXXXXXXXXXXXXX","canInvite":false,"shouldShowHireMeDialog":false,"sameAsLoggedInCompany":false,"position":"iron","hourlyRate":null,"hourlyWorkedProjects":0,"lastActiveLoginRelativeToUser":"August 05, 2022 11:25","lastActiveLoginRelative":"3 years ago","registeredSinceRelativeToUser":"August 05, 2022 11:25","registeredSinceRelative":"3 years ago","recentBreaches":{"value":0,"label":"0 recent violations"},"workerSkills":[{"anchorText":"Electronic Design (1 to 3 years)","anchorLink":"https://www.workana.com/en/hire/electronic-design","isCertified":false,"title":"Electronic Design - Freelancers"},{"anchorText":"PCB Design (1 to 3 years)","anchorLink":"https://www.workana.com/en/hire/pcb-design","isCertified":false,"title":"PCB Design - Freelancers"},{"anchorText":"Electrical Engineering (5 to 10 years)","anchorLink":"https://www.workana.com/en/hire/electrical-engineering","isCertified":false,"title":"Electrical Engineering - Freelancers"}]},{"isHero":false,"profileUrl":"https://www.workana.com/freelancer/3b900b695ca75f60b980b6ccf9b75680","profileLogoUrl":"https://cf.workana.com/logos/6d/651d2595e14196aa7346c22e675db6/CC.jpg","profileName":"L. J.","hash":"3b900b695ca75f60b980b6ccf9b75680","roleName":null,"tagline":"PCB design|RF design|Embedded Programmer","isVerifiedAgency":false,"rating":0,"ratingLabel":"No ratings yet","completedProjects":0,"badges":[{"title":"Freelancer iron","size":"small","position":"iron","profile":"","type":"iron"}],"country":{"name":"China","img":"

","searchLinkUrl":"https://www.workana.com/jobs?country=CN"},"completedProjectsForView":"0","dangerouslyWillBeRenderAsHtml_description":"What I can support is following:
- System architecture design (project specification and structuring).
- Electrical & electronic diagram, and Circuit & PCB design.
•RF Antenna/Front end, filter design. Microstrip/Micro wave circuit analysis and deisgn
•High frequency circuit analysis and design – UHF/HF analog circuit design, High frequency digital circuit design such as DDR3, eMMC, Flash memory, 1Gbps Ethernet circuit design.
•Video/Audio streaming circuit
•FPGA, DSP, CPLD circuit/PCB design
•Accelerometer, aspiration, ECG, EEG, Air quality, Doppler sensor….. peripheral circuit and PCB design
•Flexible PCB inlay design.
•Up to 32 layers PCB design and signal integrity analysis.
- Firmware development in assembler or C/C++ for any MCU platform.
•UART, I2C, Quad - SPI, USB, CANBus, I2S interface.
•FREE RTOS, hal based driver firmware.
•Bootloader coding.
•EPD(electronic paper display), Touch screen LCD, OLED driver.
•BLE Gatt driver and AT commands
•FPGA/ DSP firmware.
•ADC/DAC, capacitive sensing.
•BLDC motor control firmware.
•Drone auto pilot firmware.
•ISO7816 EMV chip firmware.
•BMS(Battery Management system) firmware
- Standardization and protocols
•FCC, ISO/IEC 14443, ISO/IEC 18092, ISO 18000
•ISO IEC 7816, ISO/IEC 7815
- User interface applications for iPhone, Android phone, websites, and windows version.
- Rapid prototyping and shipping the prototypes.","canInvite":false,"shouldShowHireMeDialog":false,"sameAsLoggedInCompany":false,"position":"iron","hourlyRate":null,"hourlyWorkedProjects":0,"lastActiveLoginRelativeToUser":"August 28, 2019 06:40","lastActiveLoginRelative":"6 years ago","registeredSinceRelativeToUser":"August 22, 2019 04:30","registeredSinceRelative":"6 years ago","recentBreaches":{"value":0,"label":"0 recent violations"},"workerSkills":[{"anchorText":"Bluetooth","anchorLink":"https://www.workana.com/en/hire/bluetooth","isCertified":false,"title":"Bluetooth - Freelancers"},{"anchorText":"PCB Design","anchorLink":"https://www.workana.com/en/hire/pcb-design","isCertified":false,"title":"PCB Design - Freelancers"},{"anchorText":"Electronics","anchorLink":"https://www.workana.com/en/hire/electronics","isCertified":false,"title":"Electronics - Freelancers"}]},{"isHero":false,"profileUrl":"https://www.workana.com/freelancer/bcf9bb5597b116566cabaf477e617a41","profileLogoUrl":"https://cf.workana.com/logos/f8977e6328b8dfb39a163d5a95e9f447/qx/logo_n1_160_160.png","profileName":"P. X.","hash":"bcf9bb5597b116566cabaf477e617a41","roleName":"Electrical engineer","tagline":null,"isVerifiedAgency":false,"rating":0,"ratingLabel":"No ratings yet","completedProjects":0,"badges":[{"title":"Freelancer iron","size":"small","position":"iron","profile":"","type":"iron"}],"country":{"name":"China","img":"

","searchLinkUrl":"https://www.workana.com/jobs?country=CN"},"completedProjectsForView":"0","dangerouslyWillBeRenderAsHtml_description":"We are a group of electrical engineers with years of experience in PCB design and layout. We've designed a set of PCBs for Package/Parcel Sorting System, which is now working in Thailand, and they've done a excellent work till now. We are confident that with our expertise we can provide satisfying service for you. Let us know by requesting us your projects or problems. We'll try our best to provide services for you.","canInvite":false,"shouldShowHireMeDialog":false,"sameAsLoggedInCompany":false,"position":"iron","hourlyRate":null,"hourlyWorkedProjects":0,"lastActiveLoginRelativeToUser":"January 04, 2022 00:25","lastActiveLoginRelative":"3 years ago","registeredSinceRelativeToUser":"December 29, 2021 05:27","registeredSinceRelative":"4 years ago","recentBreaches":{"value":0,"label":"0 recent violations"},"workerSkills":[{"anchorText":"Embedded System (3 to 5 years)","anchorLink":"https://www.workana.com/en/hire/embedded-system","isCertified":false,"title":"Embedded System - Freelancers"},{"anchorText":"PCB Design (3 to 5 years)","anchorLink":"https://www.workana.com/en/hire/pcb-design","isCertified":false,"title":"PCB Design - Freelancers"},{"anchorText":"Circuit Design (3 to 5 years)","anchorLink":"https://www.workana.com/en/hire/circuit-design","isCertified":false,"title":"Circuit Design - Freelancers"}]},{"isHero":false,"profileUrl":"https://www.workana.com/freelancer/e20d97dac25801bf4dc3d6d8bd5445fc","profileLogoUrl":"https://cf.workana.com/logos/96/027487e5b944069951477b975ff296/Untitled-1.jpg","profileName":"M.","hash":"e20d97dac25801bf4dc3d6d8bd5445fc","roleName":null,"tagline":"famous freelancer","isVerifiedAgency":false,"rating":0,"ratingLabel":"No ratings yet","completedProjects":0,"badges":[{"title":"Freelancer iron","size":"small","position":"iron","profile":"","type":"iron"}],"country":{"name":"China","img":"

","searchLinkUrl":"https://www.workana.com/jobs?country=CN"},"completedProjectsForView":"0","dangerouslyWillBeRenderAsHtml_description":"Dear Client
I have many experiences for 7+ years with circuit design, PCB design, Arduino, electronic design.
Here are some of the experiences that I built ago
- Schematic and PCB Layout using Altium designer, easy EDA, KiCAD.
- Multi layer, flexible, High-speed PCB design
- Exceptional C++/C /C# programming skills.","canInvite":false,"shouldShowHireMeDialog":false,"sameAsLoggedInCompany":false,"position":"iron","hourlyRate":"USD 25.00","hourlyWorkedProjects":0,"lastActiveLoginRelativeToUser":"October 20, 2025 20:00","lastActiveLoginRelative":"2 months ago","registeredSinceRelativeToUser":"February 15, 2020 11:27","registeredSinceRelative":"5 years ago","recentBreaches":{"value":0,"label":"0 recent violations"},"workerSkills":[{"anchorText":"PCB Design","anchorLink":"https://www.workana.com/en/hire/pcb-design","isCertified":false,"title":"PCB Design - Freelancers"},{"anchorText":"Electronic Design","anchorLink":"https://www.workana.com/en/hire/electronic-design","isCertified":false,"title":"Electronic Design - Freelancers"},{"anchorText":"Arduino","anchorLink":"https://www.workana.com/en/hire/arduino","isCertified":false,"title":"Arduino - Freelancers"}]}],"pagination":{"total":7,"limit":10,"page":1,"pages":1,"urls":{"base":"https://www.workana.com/en/freelancers/china/pcb-design","template":"https://www.workana.com/en/freelancers/china/pcb-design?page={:page}","1":"https://www.workana.com/en/freelancers/china/pcb-design?page=1"},"offset":0,"nextPage":null},"g11n":{"addFreelancerToList":"Add to list","verifiedAgency":"Verified agency","completedProjects":"Completed projects","expandText":"View more","collapseText":"View less","hire":"Hire","hourlyRate":"Hourly rate: ","hourlyWorkedProjects":"Hours worked in hourly projects: ","lastActiveLogin":"Last login: ","registeredSince":"Registered since: ","certifiedSkill":"Certified skill","viewMore":"View more","pagination":{"start":"Home","final":"Final","previous":"Previous","next":"Next"}}}

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