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The project is about developing an Arduino based AC motor control for a record player. In a previous project we managed to generate a stable PWM signal with an Arduino Uno, that is later on filtered and amplified to generate a proper sine wave, that can be altered by frequency and amplitude to control a motor. The current version works fine with the exception that finetuning the generated frequency ("pitch control") is only possible in a very limited range. Ideally the output frequency should allow for setting between 33.333, 45, 78 and max. 100 rpm as exact as possible with the possibility to finetune the pitch in a range of approx. +/- 5% but down to 0.001 rpm using a 5k potentiometer on the Arduino. It looks like the 8-bit processor of the Arduino Uno is not capable of solving the task and now switching to a 32-bit Arduino processor might be necessary to go ahead. So I would assume the project should be based on an Arduino Due. The given code shall be reviewed and optimized, to keep the PWM/sine signal stable and allow for finetuning the pitch as described above. If necessary a new approach has to be found (based on the Arduino). The project will require availability of at least an oscilloscope, multimeter and an Arduino Due board.
Project ID: 19496044
8 proposals
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Active 7 yrs ago
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8 freelancers are bidding on average €243 EUR for this job

Hi I am experienced electronics engineer with more than 9 years of experience. I have read the details. I have arduino due and oscilloscope with me Please let me know if you are interested in working with me I am waiting for your reply to start Regards
€800 EUR in 15 days
7.9
7.9

Hello my name is Maria, I would like to work in this project, I’m an engineer with plenty of experience working with Electronics, Microcontroller, I have made many arduino projects, so I am sure I can do a good work for you. Good communication with my clients it is a top priority for me. If you have any doubt or want to see more of my work I’ll be here. Contact me for more info.
€250 EUR in 3 days
5.8
5.8

Hello there, I am an Electrical Engineer by profession and have been doing Arduino projects for a while now. I have worked with quite a lot of sensors and know all about configuring and debugging them. You can visit my profile or can check out my portfolio for sample work. I got the expertise you require for this project. Do open the private chat box, so that we can discuss more.
€250 EUR in 3 days
5.5
5.5

Hello I have got your job posting “Arduino based Record Player Control” and I am very much interested to work in your project. I am a circuit designer and have more than 5 years experience of working with the Analog/Digital Electronics Embedded systems(Arduino,Rasberry pi ,ARM processors ,PIC microcontrollers,Wireless boards,TFT Touch Displays,All types of sensors and actuators). i have done tons of similar projects So, I think you’ll find that, I have the skills you’re looking for. For more on my skills and successfully finished projects, please have a look on my Profile and Portfolio. I have all the components available here with me so i will develop a working prototype according to your specifications and then send you the code and schematics so things will work for sure.I will remotely guide you and help you build the system on your side. I am always available on Email and Skype. Please have a voice or video chat if necessary. I shall be available round the clock and able to start your project as soon as possible according to you. Thank you for your consideration, Best Regards, Haseeb Shafqat
€200 EUR in 7 days
5.6
5.6

Hello, My name is Andrei, i am a Romanian IOT Developer with a lot of experience in IOT projects and automatics . I have read the project and is nice , and the tests are in Proteus , let's discouse more about this project , i can do if for you in a short time . I can work with all types of Microcontroles programming in C , C++ , Mikro C , CCS C , Atmel Studio , Arduino , gcc . Creating Schematics and PCB in Kicad , Eagle , EasyEDA and Proteus (+simulation). i have an workshop full of parts and the infrastructure to build PCB and test the solution end to end using special tools (Spectrum analyzers , oscilloscope , logic analyzers ) Derivable on the project : Wiring diagram for prof of concept . Schematic design PCB Design Gerber files for manufacturing MCU code explained every line . As an additional service i can make you a full working prototype and ship to you. Regards, Andrei
€200 EUR in 10 days
4.4
4.4

I am an Electrical Engineer with a masters degree I have high proficiency in Electrical Engineering, HVAC, LTE system model, Thermal system design, FPGA, Verilog / VHDL, Matlab/ Simulink, Microcontroller, Modeling, optimization, simulation of building energy systems: PCB Layout, Arduino and have been working on Industrial Automatics and Electronics. My fields of interest are Schematic design, Prototyping, PCB Design, Development of Electronic systems, Firmware and Software development. I would love to discuss this project with you and meet your exact requirements. I am confident I can provide you with top-notch materials that will fit your needs. Once you share the project, I will have a look & confirm if I can do it. I’m honest, creative and a unique person to carry out your tasks given to me. Leaving your project with me is a privilege; I will make sure that the project is done in a perfect way and do my very best until you are satisfied. I pride my work on being professional, of the highest quality and always delivered on time. Thanks in anticipation
€30 EUR in 3 days
4.5
4.5

I am an Electrical Engineer having specialization in Electronics Control and Power, teaching at well known University in Pakistan. I have my BS degree in Electrical Engineering with specialization in Power. Also i hire many persons in my Company for freelancing. They know many skills like Graphic designer, Logo Designer, Video Editing and Data entry. I have taught the followings courses, and also done many projects related to these subjects as well as related to consumer electronics products. 1. Control System Design & Modelling Continuous, Discrete, Linear, Non-Linear, Optimal, Fuzzy Logic + Matlab & Simulink 2. Digital System/Logic Design Verilog, VHDL, Logisim 3. Digital Signal Processing MATLAB 4. Micro-controllers 8051, Arduino, PIC 5. Power Electronics PSIM, MATLAB, PSpice 6. Control of Electric Machine Drives 7. Circuit Analysis and Designe etc 8. PCB Design Proteous + Ultiboard + Altium Designer I assure you, if you assign your project to me, you surely g
€100 EUR in 7 days
3.1
3.1

Hi, I am a enthusiastic freelancer and have a bunch of experience in doing projects related to your skill. You can check my profile. Please consider
€111 EUR in 2 days
0.0
0.0

Stuttgart, Germany
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Member since Jul 24, 2009
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