Design a DC/DC converter + micro-controller for a stationary bike - repost

Budget $30 - $250 CAD
Bids 19
Average Bid $413
Status Closed

The project is consist of a stationary bike, a DC/DC generator with a micro-controller and a battery. As the cyclist pedal of the bike, the energy is transferred from mech. to elec. and is uncontrollably stored in the battery. At this stage, The bike, bike stand generator and battery are already purchased. The generator is a 24V DC generator and the battery is 12V. The generator is in touch with the back wheel of the bike. as the bike's back wheel's rotate, it rotates the rotor of the generator.

The work is designing the DC/DC converter with a micro-controller to control the rate of charge of the battery. it is desired to avoid over charging the battery. Also it is desired to have the option of changing the degree of difficulty of pedaling by changing the current/torque produced. this could be done by having a potentiometer for the user to change it.

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Bids on this Project

  • farazahmad759 Profile Picture


    Lahore,  Pakistan

    My areas of expertise are: 1- Circuit Design 2- Control Systems 3- Programming (Assembly, C, C++, Java, Matlab, HTML, PHP, CSS) 4- Matlab Simulink 5- Softwares: Etap, Keil, Orcad, Proteus, Matlab, PWS CONTACT HOURS: Monday: 3:30 GMT to 11:00 GMT Tuesday: 3:30 GMT to 11:00 GMT Wednesday: 3:30 GMT to 11:00 GMT Thursday: 3:30 GMT to 11:00 GMT Friday: 3:30 GMT to 7:15 GMT Saturday/Sunday: OFF

  • akramkarimi1036 Profile Picture


    Lahore,  Pakistan

    Fully dedicated professional with the approach of taking any problem of my field as a challenge and to deliver best possible solution to the employer above his/her satisfaction.

  • jacer81 Profile Picture


    KARACHI,  Pakistan

    My aim is to provide accurate work well on time with efficiency, reliability and dependability. I am experienced Electronic Design Engineer, Modelling Simulation Specialist and present myself as a growing, flexible and multiple-talent freelancer. Expert in : -1- Analog/ Digital Circuit Designing (SMPs, UPS, Amplifiers, RF systems, Instrumentation, Control Systems, Embedded Systems) -2- Modelling Simulation -3- Embedded Systems -4- Technical Writing -5- Proteus, EAGLE, Orcad, MultiSim, EWB -6- MATLAB- Simulink -7- Assembly, C, C++, as well as Teaching Engineering Subjects. Further more with extensive writing experience, I have all the skills and experience needed to provide clients with insightful quality work. A large portion of my work work is focused on creating clear and concise content. My work also encompasses blog writing, technical writing, ghost writing, copy-editing, SEO articles and proofreading. My education, hard-work, dedication and attention to details have helped me acquire a skill-set needed to full-fill the needs of a variety of customers and help them achieve their dreams. My services are provided under following conditions only: 1- Employer will check the work product/ service before releasing any milestone as milestone once released will not be returned back to employer and employer or any one on his behalf will not make demands/ claims for return of money. 2- Money once paid will not be returned back to employer under any circumstances. 3- I shall not be responsible for any kind of loss resulting from my service(s), including but not limited to loss of life, money or property resulting from my service(s), and employer accepts that he/she or any one on his/her behalf will not make any claims in this connection. Employer agrees that I could not and would not be held responsible for any kind of loss or damage resulting from my service(s). 4- My service(s) and work products are provided on as is basis without any guarantee for correctness or efficiency and employer will not challenge it at any level/ forum. 5- Employer agrees and accept that he/she will release any or all milestones when he/she will receive an acceptable/ reasonable portion of service in the concerned project. 6- Employer will not unfairly dispute any milestone after receiving the required portion of work product or service connected to that milestone.

  • rraaddmmaann Profile Picture


    Calgary,  Canada

    My skills: Schematic capture and PCB layout using Altium Designer 10. Microcontroller firmware development in C I am a professional with 16 years design experience designing PC peripherals and instrumentation. My focus is on delivering quality designs in short time. You will not be disappointed!

  • maksmusings Profile Picture


    Lahore,  Pakistan

    I am an electronics system developer, designer , programmer, and I can make your ideas come to life and according to your requirements in very reasonable cost.

  • RoboTechnics Profile Picture


    ─░stanbul,  Turkey

    RoboTechnics is an engineering company whom serving globally in mechatronics field. Company specialized in unmanned ground vehicles for both military and civilian uses. First product prototype of unmanned ground vehicle has manufactured. With many skills and experiences in mechatronics field we would be glad to serve you in the subjects listed below; - Research & Development - Computer Aided Drawings (CAD) - Computer Aided Simulation - Engineering Drawings (Ready to Manufacture) - PCB Design and Layout - PCB Production - Electronic Prototyping - Embedded Systems Programming (C, C++, Linux, Arduino, Android, ...) - Arduino Projects (Turnkey Apllications) - Robotics Systems (Design and Manufacture) - Autonomous Systems - Unmanned Systems - Telemetry Applications - Renewable Energy Control Applications

  • bchandra1955 Profile Picture


    KANPUR,  India

    I love engineering tasks. I have been in product design , development and testing area since past 37years. Wind and solar area are my preferred areas. I can take care of mathematical modeling , Programming in MATLAB, SIMULINK and LABView and real time programming as well as simulation Skills in MATLAB, FORTRAN,Pascal, C,C++, LABView, I have put minimum limits for project budgets: $42 for hourly consultation (that is, for 2 hours), and $45 for fix cost quotes for 2 hours of occupancy.

  • MikroStar Profile Picture


    Lahore,  Pakistan

    Hello, I am an electrical and electronics design engineer. I have design expertise in Embedded system, firmware development, PCB layout and hardware prototyping . I also have experience in MATLAB for modelling and simulation of electrical systems and ANN. Software proficiency: 1) Proteus Design Suite 2) Altium Designer 3) Cadence ORCAD 4) KICAD 5) MATLAB 6) Arduino IDE 7) MIKROC for AVR/PIC 8) Fritzing 9) Eagle CAD I have more than 7 years of experience in developing custom electronics. I can take your project from concept to completion. Furthermore i have high level of design expertise in following technologies: RF, Bluetooth, BLE, Zigbee, wireless, GSM, 3G, WIFI, GPS, NFC, RFID, Energy harvesting, MEMS and datalogging.

  • erol27 Profile Picture


    Cimahi,  Indonesia

    have experiences in embedded system, now active in web development, data mining and data analityc

  • Expert321 Profile Picture


    Lahore,  Pakistan

    I am Electronic Expert with specialization in Embedded Systems. My expertise is 1) Verilog 2) Matlab 3) PCB Design 4) Digital Logic Design 5) Hardware design, 6) Micro controllers, 7) FPGA, 8) C, C++.