Audio Matrix Circuit controlled by Arduino

Hi Ive worked with high-end audio designs and would love to design this for you. There are also a number of improvements that can be had if you can share a bit about your exact requirements. To begin with TEA6420 is considered obsolete and there are other/better analog switches available. Also, i understand you want to have 4 analog inputs (via the TDA7449 preamp ICs as of now) but you can also cut down on unnecessary components and have a good audio buffer input instead. For the bid, i'll be taking your inputs, suggesting you better alternatives, designing and giving you a complete PCB prototype (unpopulated) mailed to your address.

Hi, I have worked on all Arduino and had exertise in writing code in C++ for sensors and actuators. I have also worked on TDA modules. I have full expertise in - I2C -SPI UART Communication. I would like to discuss this project in more detail. Looking Forward, Khawaja

Dear Sir, We have previous experience with Electronic Hardware development and App development. please see our profile for more information of past projects. I am looking forward to hear from you. best regards Lasantha Prasad

Hello, Have a great day. My name is Shahbaz Ali. iam running a setup for prototyping Electronic devices. we shall deliver the following. 1. Working Protype. 2. Schematics, Bill Of Material. 3. PCB design, Gerber files 4. Arduino Coding. Please note i will check for availabilties of parts in Local and international market. May be i change the design and use components that are low cost and easy to obtain. Please feel free to contact. Best Regards, Shahbaz.

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Hello, I have been associated with Hardware design (Circuit / Electronics design), PCB design, PCB Manufacturing, Component procurement, PCB Assembling and Functional testing for over 7 years. I have used various CAD/EDA tools for PCB design. Would you prefer any specific EDA tool for PCB design (or) any tool is okay? I will provide the PCB Manufacturing, Component procurement, PCB Assembling & Functional testing services too. I look forward to hearing from you! Wish you a nice day! Thanks & Regards, Karthik

hi i am an electrical engineer. i have strong skill set related to Arduino development and pcb layout. i have worked on many embedded projects. i can do this project for you. let me know if you are interested and we will discuss the details.

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Hello: I am interested in your project. Please provide the schematic diagram of your tested prototype. I will develop the PCB Layout and also I have experience with C programming. Please feel free to write back if you consider. Thank you, Sam

hi... i can design your project in Altium Designer v15.. i ll provide to you schematics, PCB, BOM and gerber files and what you need im interesting your project, pls give me more details.. actually your board is very useless and amateur. i offer to you professional design with no error to build real hardware thanks..

I am a pcb and firmware developer. Many years of experience with PCB design and Atmel firmware. Ready to start.

Commonly I will use PSpice Tools for building the optimized circuit so you will save much time for this part. I am also expert C programming especially for Arduino (I have my own UNO). Let me know the schematics design you have so I could process using my PSpice tools.

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Hi, I am an Electrical engineer and expert in embedded systems and circuit design. I have done many projects arduino like line following robot using PID controller, speed control of motor, gsm module control etc. I had done many pcb designs as you can see my portfolio. I assure you I will complete the project according to your requirements. Thanks

Hello, I have the experience needed for this porject, I'm an electronic engineer and know about C, PBASIC, PHP, etc... I also build PCB circuits as a hobbyst too.

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We are a team of skilled engineers with over 13 years of high complexity embedded system development. We have only started on Freelancer.com but you can have look at our portfolio and see samples of our previous work. Our area of expertise include digital signal processing, digital/analog circuit design, RF/MW system/sub system design. Our board spectrum of skillset covers schematic design, PCB layout/fabrication/assembly, firmware development (FPGA, uController), SDK development, algorithm development (Matlab), and software development (MS Visual Studio, TI CodeComposer, Freescale PowerPC). We have worked with industry standard tools like Matlab, Agilent ADS, Mentor Graphics ModelSim, Microsoft Visual Studio (C/C++, C#), Xilinx ISE, OrCAD Capture, Altium etc. Once awarded, you will find our work of top quality. Looking forward to top quality business relationship.

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