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Design and prototype of a motor controller circuit

$250-750 USD

Closed
Posted over 5 years ago

$250-750 USD

Paid on delivery
The operator sets the first potentiometer to the desired speed and the second potentiometer to the desired off/on time ie off for say 3secs then on for say 1.5 secs, note this must be variable by the potentiometers. Now i had this designed and prototypes built in the past and it all failed as the 2 potentiometers interacted with each other and caused a very unreliable output, i think they fed off each others voltages and it contaminated any chance of being accurate or smooth.
Project ID: 18201533

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29 proposals
Remote project
Active 5 yrs ago

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29 freelancers are bidding on average $476 USD for this job
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Hi I am experienced electronics engineer with more than 8 years of experience. I can do it for you. I have read the details and can solve it , I would like to know what are deliverable s of the circuit then I can give you my final quote Please reply to discuss it more in detail regards
$600 USD in 10 days
4.9 (255 reviews)
8.0
8.0
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$555 USD in 10 days
4.8 (89 reviews)
7.6
7.6
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I am embedded system electronics engineer and have worked on CNC controller, stepper motor controllers, smart homes, etc. Please consider sending me a message so that we can discuss further
$600 USD in 10 days
5.0 (19 reviews)
6.4
6.4
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Senior ENGINEER has more of 40 years’ experience in this profession, developing Hardware and Software Expertise in video processing and associated simulation and evaluation tools and methods, communication I2C, I2S, SATA, RS232, RS422, RS485, USB, TCP, Bluetooth, RF433, Wi-fi, GSM, GPS, GPRS and any other serial communication. Producing Analog/Digital board designs, layouts and modifications or any other multi-layer PCB design, Verifying designs and layouts. See Portfolio for samples of works. Preparing documentation for manufacturing. Gerber, Bom, 3D model Contact with partner in China for make PCB in 32 layers Design in Any CAD, Allegro, Altium, Orcad, Eagle, and other. Developing board layout including 3D model, size, performance, power consumption, and cost. Developing software for any microcontroller or microprocesor in C, C++, Basic, Assembler, compiler Keil, IAR, and other.
$555 USD in 10 days
4.9 (53 reviews)
6.5
6.5
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Hi, In my experience, when two potentiometer are looks like interact each other , the simplest solution is move away potentiometer from each other. or if you want , it should be looking at register level initialization. but it takes Time, I guess you are used STM32 based ADC, didn't you? Let me know if you are interested to working with me. I have became hardware design engineer and firmware programmer since 2012 and has done lot of project from Hobbyst to Military purpose. let's discuss the detail over chat. let me help you. best Regards, Rijal
$450 USD in 5 days
4.9 (72 reviews)
6.2
6.2
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Hi, I am an experienced electrical engineer and preferred freelancer on freelaner.com. I would be happy to work on this project. First of all I will design schematic and test code and circuit in simulations. After your complete satisfaction with simulations results I will design PCB board and will provide all required files to get PCB board manufactured and assembled. I will guarantee flawless code and circuit diagram. I will work with you until you get your desired results. I am sure you forget about previous bad experience. Please contact me to discuss about project if you find my proposal appealing to you. Thank you very much. Best, Junaid
$666 USD in 10 days
5.0 (39 reviews)
5.8
5.8
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Hello, We have 15 years of work experience in manufacturing and have worked extensively in china, Apac countries and India. We have a Team of Designing and Developing Electronics Projects and also have good experience in designing Multilayer PCB. My Expertise: • Multilayer PCB up to 8 Layers • Control Circuits • Mixed signal board • Motherboards • RF Modules • Power Supplies • Taken care of EMI/EMC guidelines, Thermal effects, and signal integrity. Our past product experiences includes: - Communication products on (Bluetooth, wifi, gsm-2g/3g/4g with and without gps, Lora, sigfox) - Commercial products (fully automatic top loading washing machine with fuzzy logic, smart microwave over, BLDC fans and compressor drives for air conditioners, Led lightings-home down lights, smart bulbs and tube lights, solar street lights and high bay lights) - Automotive products (tire pressure management systems, obd2, Bluetooth for infotainment, ev charging stations, BLDC drives, Battery management systems) - Utilities (water flow meters and Energy Meters) We have a production capacity to support international quality standards of production. We hence request-fully submit our proposal for your evaluation and reassure you of our quality and promptness. We also are willing to sign a long term freelancer support contract for your future needs as well. Awaiting your response. Regards, Mihir
$750 USD in 10 days
5.0 (1 review)
4.4
4.4
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hi there i can do it perfectly ...................................................................................
$750 USD in 10 days
5.0 (2 reviews)
3.2
3.2
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Hello sir i am an Electrical engineer as well as a product designer and have work experience in my fields. !!! I have worked on and built an electric vehicle where we had to maintain the speed at variable loading conditions so i have a good hand on intelligent speed control!!!
$333 USD in 1 day
4.9 (3 reviews)
2.2
2.2
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A simple project already similar has some already made
$444 USD in 10 days
2.0 (5 reviews)
5.0
5.0
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Hello. I have experience with 2 potentiometers to operate the process. There were usual potentiometers and everything worked OK. So i want to help you with your problem.
$277 USD in 10 days
5.0 (2 reviews)
1.4
1.4
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Hello, I'm a new freelancer. I designed hardware and firmware of a system before, It is TI InstaSpinMotion. This is a very stable control library for speed position or tork control for small or big power motors. If 20 years of experience on hardware firmware and software design is something valuable for you, I'm here to accomplish your project.
$750 USD in 10 days
0.0 (0 reviews)
0.0
0.0
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Hello, I have been designing BLDC/PMSM and DC motor controllers and motors for several years. I can produce fully assembled PCBs quickly due to experience and excellent prototype and production setup. I have examined your drawings and I will be able to produce this effectively. A microcontroller will monitor the potentiometers and switch inputs, debounce filtering will be implemented to avoid unintentional switching. Motor rpm will be measured alongside current too. It’s an interesting project and I look forward to discussing it with you further. Kind regards, Hugo
$600 USD in 18 days
0.0 (0 reviews)
0.0
0.0
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hello dear I propose to do this job with numeric method, i mean using a micro controller, so he take control from 3 potentiometer then he make decision for on/off and speed of the motor. a power electronic part must be do it and i'm good in this, also i have in my laboratory some motors and component so i can test that. I would like to work in this job thank you aymen
$555 USD in 10 days
0.0 (0 reviews)
0.0
0.0
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With my experience, you can do it using two solutions, the first solution is to using timer555 IC but timer555 is not stable enough if you need the system to be too accurate. The second solution is to use a cheap MCU and make a faraday cadge if you need to use it in industry environment.
$277 USD in 1 day
0.0 (1 review)
0.0
0.0
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I have a good circuit design experience and I do this well because I am an electrical engineer. I provide my skills to you for complete this task with in a time Relevant Skills and Experience I am electrical engineer with good experience in circuit designing.
$555 USD in 10 days
0.0 (0 reviews)
0.0
0.0
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Hello dear Sir/Madam I have MSc in electrical engineering. I made the board like this in the past. I can do this very well .if you interested I can send the photo of that PCB best regard
$340 USD in 10 days
0.0 (0 reviews)
0.0
0.0
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Hi Sir, first I will develop a concept of your mechanism. you can hire me only if you are satisfied with the first concept. I feel this is a fair deal to select a designer. Please let me know the details of requirement to build the concept. thank you and looking forward to hear from you sincerely
$277 USD in 15 days
0.0 (0 reviews)
0.0
0.0
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I have a vast experience in electronics and automation Your design looks like working with automatic feeders for aquariums that I am familiar with
$333 USD in 14 days
0.0 (0 reviews)
0.0
0.0
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I would love to work with you on a solution. My background in industrial controls design means that I have strong skills in this field. I have also developed real-world solutions on the scale of this type of project. I propose a solution based on an Arduino Nano with the following additional circuits: 1) 12V regulator for motor supply 2) 3.3V regulator for Arduino supply 3) Motor FET driver for PWM speed control 4) Potentiometer and on/off switch connections 5) Battery voltage monitoring A microcontroller-based solution offers several advantages over a simple circuit: 1) Stability: Separation of the control circuits from each other and from the motor circuits. 2) Flexibility: Easy to change the interval timing range, or modify other aspects of the logic. All it requires is a firmware update. Optional: 1) You could upgrade the potentiometers with rotary encoders and/or an LCD display to indicate actual timing and speed. This may be negotiated. Excluded: 1) Li-Ion charging is excluded from this project due to the complexity of charging 4 separate packs. I do not believe it belongs in the scope of this type of project. 2) This bid does not include cost of postage for the finished products. I have allowed significant time because a prototype must be built first, then a PCB designed and samples manufactured and assembled before the final solution is complete. I look forward to working with you on this project. Thank you for considering my bid.
$400 USD in 45 days
0.0 (0 reviews)
0.0
0.0

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Member since Nov 8, 2018

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