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Dear Sponsor, I use ATMega 2560 to write program on relays, etc. using bluetooth and Android. I am a hard core developer with 14 years of experience in software development with Java (3Y), C++ (10Y), C#(3Y), Visual Basic, Excel, VBA programming, Web programming, HTML5, PHP, MySQL, Linux and Windows. I am an Android developer with 2Y of experience. Please check "Math Align Square" in google play. I am a PMP certified from PMI. Plus, I am a part of a team of experienced MNC professionals. Great virtual team, who can deliver on time, within time, budget, and at high quality. I am rich in domain knowledge like web technologies, medical domain and management. My Knowledge in Architecture, programming, design skill can be proven with prototype. Please ask for a quick prototype for your problem. Honesty, hardworking, above average intelligence is my assets. I hope you will really enjoy my work. Please award your project(s) with a appropriate milestones. With warm regards, Freelancer

i have a good knowledge about arduino programming and have done number of projects using arduino board.i am also working with stepper motor.i also have good knowledge about its hardware interfacing with PC.I will do your work easily and accurately.

I am professional in it. I already had designed such system.

I can do your job .

With me knowledge of the arduino that project will be easy for me. Of course I will need more details to better understand what you want to achieve.

Hi, I have experience for 15+ years in electronics/embedded development. I have several years of advanced AVR/arduino development, including library development from scratch. Practically all Arduino AVR boards used, like: 2009, 2010, UNO, MEGA, NANO, MICRO, MINI, etc. Several shields used like Ethernet (W5100, ENC28J60, etc.) with various IP protocols implementation, various graphical TFTs with and without touchscreen and various BUS types (parallel, SPI, I2C, etc.), all kinds of sensors and buses, serial and parallel memories, etc. I didn't get by your project description what you intend to do, but by your sketch, it seems you are trying to connect a matrix keypad to an arduino ? I have worked several times before with matrix keypads and will have no problems implementing this. Also, I didn't get what you mean by "To make a connections between PC and electric house devices.", we can discuss this further, I guess... If you are interested in my bid, please let me know some more details about your project and I'll be able to answer you back telling if I'm up to the task or not. Feel free to contact me. Regards, Carlos.