Cambodia旗标 Phnom Penh, Cambodia
16 人推荐


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Thank you for viewing my profile I have 7+ years of experience in embedded system design, power electronics and Biometric identification. I was served at a large Renewable Energy System Center and served as Team Lead for 3 years. I will do everything I can do delight you and your customers. Embedded Linux driver program and solar and wind power supply control system and Radio Frequency Antenna designs are my passion. And I also attended in the project for 20MW solar power plant as a control system design and PCB designing member. My experienced aspects are: - Embedded programming - STM32 series microcontroller - PCB design - Solar Power Plant and inverter design - MIG/MAG welding machine - Bio-identification system and design (fingerprint and electrocardiogram) - RFID systems - Wireless technique - GPS and GSM technique - Telecommunications engineering - Antenna and CST, HFSS expert - Arduino, Raspberry pi 3 - ECG, EEG and EMG signal processing - Inverter design - Glucose monitor
$40 美元/小时
  • 83%完工率
  • 87%预算內
  • 96%准时性
  • 7%重雇率



  • jeffroberts235的图片 EagleCAD Assistance/Mentorship $574.00 USD

    “Ratana is an excellent engineer. He was able to teach me how to complete my project and then check the entire project for errors. He provided me with what I needed and did it with professionalism and punctuality. He also works on U.S. business hours which is very clever of him and very beneficial for me.”

  • a6245的图片 written work on active analogue filers with references £80.00 GBP

    “really good guy and fantastic help”

  • jgarcia007的图片 contador de objetos utilizando rapsberry o arduino $300.00 USD

    “This person is not trustworthy and nothing expert. he connect in my teamviewer to complete a job and it ends the project and release the money from my user. I do not guarantee it at all. NEVER HIRE AGAIN”

  • maso54的图片 Project for Ratana L. $400.00 USD

    “Good job, I will work with him again”

  • Jyoti B.的图片 Project for Ratana L. $50.00 USD

    “Had terrible experience Put all his mind in collecting money and feedback, so that he can safe path after submitting code. He tricked me in first project, but in second project I caught him, immediately after that he became rude, stopped replying. Unfortunately in first project i didnt had any option as money and feedback both was submitted... Please dont hire him, and if you do then dont clear money immediately, Do it only when you are 100% sure that code submitted in not present on net”

  • aadmr55的图片 MATLAB simulation for (SAR) imaging using Chirp Scaling - 28/04/2018 13:35 EDT $300.00 USD

    “Not as expected !”


MIG/MAG Welding machine

Feb 2013

I developed MIG/MAG welding machine.


Master of Electrical Engineering

2008 - 2012 (4 years)


communication technican (2012)


excellent communication technican


About ADSL

ADSL means asymmetric digital subscriber line


  • Preferred Freelancer Program SLA
  • US English Level 1


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