Embedded - Universal PWM Controller using ARM STM32F407VET6 Microntroller

Hello. I have 20 years experience in Linux kernel porting, device driver development, RTOS (FreeRTOS, uCOS) and bare metal systems using various ARM and other Freescale processors (coldfire, gb60, m1, hc11). I would like to discuss the details of this project with you. Please feel free to contact me and we can go over your requirements. As to the free development environment, I assume that GCC and the VSCode IDE would suffice for this project. Are you looking for a bare metal solution or would a micro kernel environment, such as FreeRTOS, suffice? I see a USB to serial converter in the schematic, so I am assuming that no actual code support for USB needs to be provided. This project could be structured as a series of milestones: * Processor bring up, hello world * Peripheral serial busses support (UART, SPI) * PWM support * Keypad support * LCD support * Menu control UI * PC control application (since this is a non commercial test utility, the free community version of Visual Studio may suffice) Please contact me so that we may discuss these details further and refine the bid to match the requirements.

Hello sir, I have experience in designing electronics circuits and can develop hardware compatible smartphone and PC based apps. I also have done a lot of IoT projects and can transform your idea into a fully working product. If you wish we can discuss details in chat. Thanks

Hi Sir, I think sir we already discussed the project with you and were willing to work together. Lets talk to me on it please. We are professional engineers and developers who do such projects from the last 10+ years. We offer you our skills for this project at very low rates comparatively without compromising the quality of work. Let me introduce you to our company TURKTRONICS. We are TURKTRONICS. We are team of professionals with 10+ years of experience in Circuit designs, PCB designs, embedded system solutions, mobile app development, programming and software development. We provide complete end to end solutions for all kind of development projects. IOT is our strong point. In this bid, prototyping and shipping cost is not included however paying extra slight of money to include prototypes. We have the manufacturing facility and we produce the very high standard PCB boards and send ready products to customers doorsteps via DHL. We care about our clients and help them to get out of any potential problem throughout the projects and also give post completion technical support if ever required. We are very much looking forward to hear from you on this in coming days! Cheers!!! Ahmad Lead Technical Engineer TURKTRONICS An Internet of Things Company !

General message: Dear Sir, Greetings from Turkey. I hope you are good. Let me introduce me. I'm Electronics Enginner who have 19 year experience. My experience is related to power electronics, hardware design, analog design, PCB design and microcontroller coding. My projects summary is attached. Please look them. If you look them you will see that I'm ideal person who can make your project without any problem. I use Altium for electronic design. I use the datasheet of ICs to create a library and schematic. I can give you examples if you want. I'm going to use a PIC microprocessor in your project. I have 10 years of experience in microprocessors. I have enough experience to make your project successful. Some examples are attached. It shows my ability to make your project. Please give me your project. I promise that I will give good solution. Please respond to me. I hope you will select me. Have a good time Cheers Metin

Hi, I am a post graduate power electronics engineer and having very good experience in product design and development. I am excellent in embedded design & programming using pic, dspic controllers and MATLAB codding for Power projects, Boot loaders, Bluetooth & GPS designs, CAN communication, EEprom. UART , RF circuits ,Protocols for networking, wi-Fi routers,OBD diagnosis with CAN bus protocols, Electrical vehicles and AC drives, stepper motor controls. I designed sine wave inverters for standalone and grid tie Inverters. I designed projects like Off line UPS up to 3 KVA, 5kW motor controller for electrical vehicles ,synchronous rectifiers, Solar MPPT chargers, Solar trackers, Battery chargers ,Grid tie inverters design with PLL and feedback control circuit emergency light of 66W and Online UPS control cards, Battery Charging power supplies, LED drivers for PWM controlling and dimming, SMPS, Power supplies. I have experience in schematics and PCB design experience in Altium and ORCAD. I am ready to work for you. Please contact for further discussion.

Hello, I am Anthony from Sri lanka. I have 7 years of experience in the field of electronics. Currently I am working as a full time freelancer and I have state of the art electronic lab. Why you should hire me ?? *** I have state of the art electronic workshop. *** I have worked with many micro controllers and modules. I have developed my own libraries to work with most of popular modules. *** My workshop is equipped with, ** PCB printing materiels ** 3D printing (Both DLP & FDM) **Various kinds of breakout boards **Qualified developers *** At some point after creating the prototype, if you are willing to take your idea to commercial level (mass production) I can help you with that since I have many reliable contacts in China. I would like to start working with you in order to bring your idea into reality. Please contact me if you are interested. We can discuss more. Thank you Anthony

I have Bachelors in Electrical Engineering and holds Masters degree in Energy Systems Engineering with strong research background. I have worked extensively on PCB designs, Schematics, Microcontrollers, Arduino and product development projects having indepth understanding of both MPPT and PWM controllers. Considering my qualification and sound understanding of the controllers i would be pleased take up this work for you. Look forward to hearing from you soon. Haris

Hi. I have read your project description and I can do this work, I can write MCU program as well as program for PC on any language that you want. For MCU I will use Atollic and C language. To evaluate my skills you can look at this project: https://www.freelancer.com/projects/dot-net/WinForms-App-connect-STM-Compile/details Regards, Alex.

hello Sir, I read you proposal and I am really interested in this project. I am an embedded engineer, PCB designer (experienced in IOT, STM32, STM8, AVR, PIC, Arduino, 8051, ZigBee, Bluetooth BLE devices, GPS, RF etc.). I can do this project as per your requirements. I hope you will consider me for this project. Thank you Preetpal Singh

We are a team of Electrical and Electronics engineers and we are Excellent in the following areas: • Embedded C Programming. • VHDL/Verilog • Microcontroller like Arduino, Raspberry Pi, FPGA, AVR, PIC and STM32. • IDEs like Keil MDK V5, ATmel studio and MPLab XC8. • PLCs / SCADA • PCB Designing-Proteus, Eagle. • Multisim • IOT Technologies like Ethernet, GSM GPRS. • HTTP Restful APIs connection for IOT Communications. Also we have good command over report writing, I can show you many samples of our previous reports. Kindly consider us for your project and text me so that we can further discuss specifically about your project's main goals and requirements. We can deliver your project efficiently at a time. If you choose me, I think you won't regret. Best Regards. Also we have good command over REPORT WRITING, We can show you many samples of our previous reports. We can discuss further details in the message box.

I am an electrical engineer and interested in your project. I have read the description of your project. Kindly send me text to discuss the project in details. Thanks

Hello, I am Engineer and interested in your project. I have some questions regarding your project. Please tell me about your time limits? When you want your project to be completed? See my profile and reviews for further details. Regards Engineer Nouman

Hi. I have a good experience in firmware design, especially for STM32 MCUs. Also I’m familiar with all peripherals and hardware used in your project. Even more, I have almost all libraries and drivers requested by your requirements. If you interested in my service, please contact me to discuss project nuances, price terms and timing of the job completion. Regards, Roman.

Hi there, My name is Jaspreet & I'm part of larger embedded hardware and firmware development team. Please share us more details about your project so we can be able to provide you proposal with desired solutions. Looking forward to hearing from you soon! Thanks

Hi As an embedded software engineer with hands-on experience PWM based applications I want to help you with your project so you can achieve that goal. I have STM32F4 DISCOVERY board with STM32F407VG and use STM32CubeIDE for free. So I can create and test a solution for you. Please send me a message so we can discuss more about details. Regards

Hello, I am hardware and software engineer and currently working in electricity metering and calibration industry. I worked on similar projects for the idustrial applications. I have several questions and I would like to discuss them with you before I make my proposal. Thank you in advance. Best regards, Radojica Berak

Dear Sir or Madam, I am writing to apply for the position that you are advertising and I attach my resume for your consideration. Having read the specification for this role, I feel that I have the right blend of skills, knowledge and experience that you are searching for, and that I would be an asset to your team and organization. I am passionate about technology, logical, analytical and keen to join an organization offering the opportunity for development and progression. I am a recent college graduate with a B.C.S Honors in Computer Science with Software Engineering from Carleton University. Whilst studying for my degree, I have also accrued 2 years of practical work experience, taking the skills that I have learnt during my studies and in my own time, and applying these too projects for businesses and clients. I have had the privilege of working for Viavi Solutions Inc. as a Systems Tester, the Department of Defense as an Engineering Trainee, and in various website and software development roles in my free time. As a result of these engagements I have developed valuable professional skills, including advanced techniques, application development, project management and technical troubleshooting. You will find that I am diligent, pragmatic and organized with great judgement. I thrive when analyzing and solving complex problems and I can prioritize tasks and multitask with ease. In both my academic and professional life, I have been consistently praised as hard-working by my professors and peers. Whether working on academic, extracurricular, or professional projects, I apply teamwork, critical thinking and technical skills to achieve tasks. I am sure that you will see from my resume that I offer the acumen and experience to perform in the role advertised, and I would like to take this opportunity to state that I embrace any possibility to undertake training in support of further developing my career in a field that I am so passionate about. Thank you for your time and consideration, and I look forward to hearing from you in due course. Yours faithfully, Siraj Ahmadzai

Hello I'm interested in your project. I'm Electronics and communication engineer. i have 3 yrs experience in PCB designing and embedded systems along with micro-controller programming. Discuss your project once i assure you for the best work .i have done many project in past like this so it's easy for me to complete on time. For more information visit my profile. Feel free to contact me. Thank you

I've been working with microcontrollers STM32 last 7 years. I have all the hardware to make this job. I have all the qualities that you are looking for. I have a strong belief that I would be able to make this project successful within short time. I will testing completely and write intelligible comments on each program step. And I will answer all your questions. I will give you advice in this area, and after the end of the job, as much as you'll need. I am very interested in the accumulation of work history and regular customers. I have a long term plan to work in here, that’s why I am here with all qualities and experiences. I am here not to cheat you rather help you. The last device which I made this Base Station Controller. 2 uC STM32F373. 74 analog inputs(ADC) (with a possibility of reassignment of functions). 16 relays. 8 digital inputs. SD memory card, CAN Interface, USB, SPI Interface ,USART Interface, 1-wire Interface, Ethernet(UDP,TCP/IP, FTP), RS-485 Interface ,TFT screen, GSM-modem, heating. 8 user buttons. Analog and digital sensors of temperature/pressure/humidity. Control of single/three-phase mains (definition of frequency, imbalance, health). Control of single/three-phase generator (gas/diesel/petrol). Control wind turbine, solar panel. Measurement 24 battery cells, identify the faulty resistance. Control refueling of fuel tanks (the definition of theft, leakage and other faults). Sending messages about emergency events via GSM, Ethernet.

Dear sir, I read the PDF attachment, it's clear but of course we will need to document it in more graphical way as requirements to eliminate the corner cases. Also it's not clear weather the SW tool in the PC is to be developed or not. I estimate that this project will take 40 days from the reception of the PCB ( I work ~20 hours per week ). What you will get: 1- Source code according to MISRA-C compliance. 2- High level design document explaining the SW (If not needed then the time can be reduced) 3- If something else is needed, please let me know My experience related to your project: 1- 7 years professional experience in the embedded systems in the automotive field. (My current position is SW architect and design lead) 2- Developed similar projects before for semi-automatic cloth machines (Machine name: Havartex) 3- Completed a HW design for 3D printer controller 4- Worked in internet connected sensors (was based on STM32 family)

Hello, - is the lcd alphanumeric or do you need graphical characters to be programmed on the controller (data sheet required) - do you need synchronization between the PWM outputs. - what type of PWM is required, pulse centered, any dead banding - are there any parameters to store on the flash memory. - do you need soft starting, soft stopping, modulation, patterns - do you plan to control the system in future by a host in real time. My quotation is based on simple application, no graphical coding, no synchronization, no real time host, no modulation, no patterns. A windows based test application is included as is without source code. You will be able to send serial commands by any general purpose tool. The communication is one way, you will not be able to receive information from the controller. We can discuss extra features. Wishing you the best of luck.