Save this Search
     
Sort by:
  • Posted Date
Time Left: Less than 7 days
Fixed Price: Less than $500   |  Posted: Mar 05, 2015  |  Ends: 5d, 14h  |   17 Proposals
Hello, I need a battery and system power management solution for a GPS tracking device that I am working on. I've been working on this for a long time, but couldn't find a proper solution. I used bq24072 - which was perfect for the job in theory. However I never achieved fast charging as it was in the theory. I tried with different circuits and batteries, the result was always insufficient. I also tried mcp73831, tp4056 and some other circuitries. As I told BQ24072 seems really perfect, but I couldn't figure out what the problem is. Anyway, you can bring a working system with bq24072 or you can provide desired functionality with anything else. As long is it works - it is ok. Characteristics: -The input voltage is 5V. -Battery should be Li-Ion or Li-po (which one you recommend for better performance and longer life) -Battery should be 3.7V and around 2000 mAh. -The system should switch to power source when external input power is on, when it is off battery should power the syste...
Category: Electrical       

m****can
 [?]
Sign in to view client's details.
| m****can
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Mar 04, 2015  |  Ends: 1d, 9h  |   10 Proposals
Looking for assistance in putting together a permit/construction set for the renovation of a single family home in the Chicago suburbs. Scope of work is all on the interior: basement, first floor and second floor. Must be proficient in AutoCad and be familiar with the International Residential Code with experience in putting together construction documents. A pdf set will be provided for reference showing the level of information expected on the drawings, and for assistance in preparing your bid. Job Duties will include: 1) Edit an existing Title sheet to reflect new project (there will be no zoning/code research - but you will have to do some area calcs). 2) Create Demo plans for 2 floors 3) Floor plans (dimensions and notes for all 3 floors) 4) Elevation sheets - these will be photographs inserted into the drawing and noted, so no actual drafting of elevations, just notes and/or tags. 5) Door schedule, window schedule, light & vent calcs 6) Electrical plans for all 3...
Category: Architecture       
Skills: Architecture, AutoCAD       
Preferred Location: United States

M****713
 [?]
Sign in to view client's details.
| M****713
|    United States
Fixed Price: Not Sure   |  Posted: Mar 04, 2015  |  Ends: 13h, 33m  |   10 Proposals
I would like a quote for preparing a material list takeoff for supply bidding. I need a materials for framing, drywall, suspended ceiling, electrical and plumbing. I have architect drawing sample. I have attached a sample floor plan for your viewing. I have full set of architect and mep drawings. Please be located in the USA and have knowledge of code requirements to better understand what materials are required. Must be accurate.
Category: CAD       
Skills: 3D Modeling, Architecture, AutoCAD       
Preferred Location: North America

e****166
 [?]
Sign in to view client's details.
| e****166
|    United States
Fixed Price: Less than $500   |  Posted: Feb 26, 2015  |  Ends: 6d, 21h  |   2 Proposals
I have a research paper and need the implementation of a couple of parts. The attached is a paper "Design and New Control of DC/DC Converters to Share Energy Between Supercapacitors and Batteries in Hybrid Vehicles" I need the implementation of following two sections section 2 "Super capacitor and battery modeling" section 3 "Buck-Boost Converter Modeling And control Strategies" I need these to implemented using matlab (Simulink). And i don't want to use the built-in functions available. And the functions you will create for section 2 must be used in section 3 implementation.
Category: Electrical       

u****per
 [?]
Sign in to view client's details.
| u****per
|    Pakistan
Fixed Price: $500 - $1,000   |  Posted: Feb 26, 2015  |  Ends: 6d, 21h  |   0 Proposals
I'm applying to our building co-op board for a kitchen & bathroom renovation. I need simple drawings. The renovation work doesn't alter any structural walls, doesn't change any plumbing. It does include replacing an electrical fuse box with a circuit breaker box but no additional service. No supervision of the work is needed. No appearance before the co-op board.
Category: Architecture       

D****646
 [?]
Sign in to view client's details.
| D****646
|    United States
Fixed Price: $20 - $120   |  Posted: Feb 26, 2015  |  Ends: 6d, 20h  |   8 Proposals
I need a code and report for a project related to image and video processing. please find the attached files that are a good description for the project.
Category: Electrical       

q****002
 [?]
Sign in to view client's details.
| q****002
|    Canada
Fixed Price: $500 - $1,000   |  Posted: Feb 25, 2015  |  Ends: 6d, 9h  |   14 Proposals
I am trying for a second time to find a freelancer that can provide mechanical, electrical, programming, and render for a unique idea. We have an idea for a device that can automatically measure and inject detergent, cell phone alert app. to provide alerts when laundry is done, remote programmable, pre-load liquid and powdered detergent to eliminate measurement and save costs. The system will then automatically inject into a washing machine based on computer program. The device must be able to be controlled by an electronic keypad and easy to use. It must also be able to be controlled remotely. It must be easy for even a child. Deliverable will be: 1. 3D CAD model 2. 3D CAD assembly 3. 2D drawing with general dimensions and specification ready for manufacturing 4. 2D drawing of the assembly with BOM(Bill of Materials) 5. 2D drawing for patent application. 6. Electronic PCB 7. Software Skills required: Electrical Engineering, Electronics, Mechanical Engineering, Product Design, Sof...
Category: Mechanical       

m****gen
 [?]
Sign in to view client's details.
| m****gen
Fixed Price: Less than $500   |  Posted: Feb 25, 2015  |  Ends: 6d, 8h  |   1 Proposal
Nice to contact you! I'm Clare, the representative of Good Enterprise SZ Limited. We are looking for Italian and Spanish freelance translators as our long- term partners. Good Enterprise SZ Ltd is a well-known professional translation agency, located in Shenzhen, China. We mainly translate such documentations as user manuals, gift box features, marketing materials, websites and software applications. For more information about our company, please visit the website:  [obscured]  -global.com. What areas or technical fields are you experienced and MOST specialized in? Do you have any experience in medical, electric, electronic or car/truck/automotive fields? May I know your Skype, thus we can talk to each other easily and conveniently. If you are interested, please contact me and send your CV a.s.a.p. Thanks! Looking forward to working with you soon. Welcome to join our team! Best regards, Clare February 26, 2015
Category: Other - Engineering &...       

C****213
 [?]
Sign in to view client's details.
| C****213 *
|    China
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Feb 25, 2015  |  Ends: 6d, 6h  |   2 Proposals
I need a California licensed electrical engineer for the electrical plan for a minor office remodel in San Francisco. I have generated the basic electrical sheets and load calculations. See attached files. New electrical is limited to some receptacles and lighting. Panel and power is adequate.
Category: Electrical       
Preferred Location: United States

j****lan
 [?]
Sign in to view client's details.
| j****lan
|    United States
Hourly Rate: $10 - $15 / hr   |  Duration: 3-4 weeks  |  Posted: Feb 25, 2015  |  Ends: 6d, 4h  |   9 Proposals
We are looking for a talented Revit mechanical Engineer/draftsman to work remotely for a prestigious Consulting office in Saudi-Arabia. Looking for someone who has professional experience in the use of Autodesk Revit(mechanical, Electrical,Plumbing, Fire fighting, Structural, Architectural) and who can turnover 2 sheets to a level of detail 350 (Construction Drawing level of detail) per day. If the above position appeals to you please email your CV, work samples (PDF, max 10MB please) and covering letter. Quick interviews will be set by tommorow, Don't hesitate if your skills fits the job requirements.
Category: 3D Modelling       

h****ima
 [?]
Sign in to view client's details.
| h****ima
|    Egypt
Hourly Rate: $30 - $40 / hr   |  Duration: 4-6 months  |  Posted: Feb 25, 2015  |  Ends: 6d, 2h  |   7 Proposals
Looking for a person to design and build a prototype of device using Mesh networking technology. The device will be used in the elder care industry and requires a high degree of system fault tolerance. The device will have both audio and video two way communication features. Individual must have the ability to design the prototype and the follow on production model. In addition must be able to assist in FCC certification if necessary.
Category: Product Design       

t****ech
 [?]
Sign in to view client's details.
| t****ech
|    United States
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Feb 25, 2015  |  Ends: 6d, 1h  |   21 Proposals
We are in need of a creative architectural designer that is a professional and can offer us some good advice since this is our first project to build residential apartments. The project will be executed in Dar Es Salaam, Tanzania which has a population of nearly 6 million people. The unique things about Dar Es Salaam, is first the weather which are very warm and can reach up-to 33-35 degrees during the day. Well, our thought was to have exceptionally large windows to provide a cool breeze inside the apartment during the day. But since we are going to be insulating the whole multistory building [ something not common here] we need to get some good advice on how we can execute such a step. Also, there is a shortage of water from time to time and hence we require large water storage which will be kept underground with capacity to provide 30,000 liters. There is also plenty of African sunshine over here and hence we would like to consider the ability to have some solar panels. A projec...
Category: Architecture       

n****rer
 [?]
Sign in to view client's details.
| n****rer
|    Finland
Fixed Price: Less than $500   |  Posted: Feb 25, 2015  |  Ends: 6d, 1h  |   39 Proposals
We need to have a PCB design modified. The board is double sided and is 38mm x 25mm and is low density. The PCB is for a wireless microphone, it is based off a DECT module and only needs about 15 lines run. Files are currently in Altium.
Category: Electrical       

l****ech
 [?]
Sign in to view client's details.
| l****ech
|    United States
Fixed Price: Not Sure   |  Posted: Feb 25, 2015  |  Ends: 6d, 0h  |   8 Proposals
Design and build a hub that will receive data from various z-wave sensors (motion, door contact, temperature, humidity, etc.) and then send that data to our web based database via wifi. The hub will need to have an ac power source, receiver of z-wave, and wifi connection to a home network. The hub will have to have an easy method to pair z-wave sensors...and add the sensors to database. The hub will need to have an easy method to connect to wifi network- WPS or similar. The Hub production cost can not exceed 35$- so pay attention to wifi chip be used. The bid must include design, building 3 prototypes, shipping these to USA, and all firmware. Working prototypes must be completed within 14 days of project start date. Data transfer- The Api we provide will be POST method. The data will be pass in JSON format like following keywords { sensormacaddress: Datatype String, sensortype: Datatype String, batterylevel: Datatype Integer, sensorevent: Datatype Integer, year: Datatype ...
Category: Electrical       
Skills: Electrical Engineering, Electronics       

J****erg
 [?]
Sign in to view client's details.
| J****erg
|    United States
Fixed Price: Not Sure   |  Posted: Feb 25, 2015  |  Ends: 5d, 19h  |   17 Proposals
My company is looking to hire an engineer/designer who has experience engineering remote controlled vehicles. We are starting with a platform toy and would like to develop an extension that incorporates Bluetooth RC technology. We are looking for an engineer or team of engineers and designers with the following skillset: 1) Ability to work with us on initial concept design. 2) Must be well versed in designing around motors, battery supply, and Bluetooth technology. 3) We are a very experienced product development company but do not currently offer anything using this type of technology. We are looking for a team to help engineer the complex moving parts of this toy. We have established plastic manufacturing and are looking for the integration with RC technology. We will be making decisions based on work experience so please provide examples.
Category: Product Design       

a****gns
 [?]
Sign in to view client's details.
| a****gns
|    United States
Fixed Price: Less than $500   |  Posted: Feb 25, 2015  |  Ends: 5d, 19h  |   3 Proposals
Technical translation. About 5 pages. The price is 15 USD. The price is fixed. Translation must be done tomorrow, 15.00 UK time.
Category: Electrical       
Skills: Electrical Engineering, Electronics       

M****he1
 [?]
Sign in to view client's details.
| M****he1
|    Lithuania
Fixed Price: Not Sure   |  Posted: Feb 25, 2015  |  Ends: 5d, 12h  |   2 Proposals
I need a 1 kw recuperated microturbine generator to be designed. The turbine will burn cooking oil, have air bearings, and start electrically. The turbine will be manufactured entirely by selective laser sintering 3d printing. You must fully understand this technology to design the turbine with few parts as possible.
Category: CAD       

M****ine
 [?]
Sign in to view client's details.
| M****ine
|    China
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Feb 24, 2015  |  Ends: 5d, 4h  |   12 Proposals
I need a ME to design a mechanism that would go in the arm of a foam bed lounger that would allow a tray type piece to be attached to the arm of a structured foam arm that would have a sturdy clip to hold a plastic or light weight wooden tablet tray that could be adjusted slightly only for the users needs. It's a retail product that we sold for years with a over hanging snake light. I want to eliminate the light and and electric components in the lounger and instead have it be able to hook a removable tablet tray to the left arm
Category: Mechanical       

s****tar
 [?]
Sign in to view client's details.
| s****tar
|    United States
Fixed Price: Less than $500   |  Posted: Feb 24, 2015  |  Ends: 4d, 21h  |   1 Proposal
i want to build a VCSEL driver that can drive the VCSEL at 120 Mbps at a low power consumption of 3 mW, this VCSEL should send the data accross skin and i want to see the transmitted data on the receiver from the other side of the skin. the space between the transmitter and receiver should not be more than 3 mm, and the skin should be in contact with the VCSEL. i want this system to be build on PCBs and i need it to be ready in 25 days if possible.
Category: Electrical       
Skills: Electrical Engineering, Electronics       

m****123
 [?]
Sign in to view client's details.
| m****123
|    Canada
Hourly Rate: $20 - $30 / hr   |  Duration: Not Sure  |  Posted: Feb 23, 2015  |  Ends: 4d, 9h  |   3 Proposals
Complete M&V report for small bowling club. Preference for report to comply with Option C of IPM&VP. Analysis performed using ECAM tool. Report being submitted as part of CEEP project.
Category: Electrical       

m****cxl
 [?]
Sign in to view client's details.
| m****cxl
|    Australia
Fixed Price: Not Sure   |  Posted: Feb 23, 2015  |  Ends: 4d, 5h  |   1 Proposal
Location: Rockland, MA Our client, Globe Composites, is a privately held designer and manufacturer of composite products utilizing advanced materials and processes. Originally founded in 1890, Globe provides turnkey research, design and manufacturing services for industrial, medical, material handling, oil field equipment and military applications. They are currently seeking a driven and ambitious QC Manager to oversee the implementation, maintenance, and improvement of Globe's quality program. Manage all company-wide quality policies, procedures, processes, programs, and practices to assure the company of continuous conformance with all standards and regulations. Position Overview and Job Functions This role is responsible for successfully execute individual projects from concept inception to volume production. Working closely with our customer base, this role will require innovation in formulating, validating and providing custom solutions to our customers' most challenging pro...
Category: Other - Engineering &...       

s****igh
 [?]
Sign in to view client's details.
| s****igh *
|    United States
Fixed Price: Not Sure   |  Posted: Feb 23, 2015  |  Ends: 3d, 18h  |   17 Proposals
This project is to develop a sensor network system. The network will consist of many identical but configurable sensors wired together in a daisy-chain. The sensor PCB is already designed but needs to be debugged. Therefore most of the work will be in writing and debugging the firmware. Each sensor module will have a button for configuring the function of the sensor. For example one sensor might be configured to trigger an alarm when a switch closes. There will be approximately 17 commands related to sensor configuration and control. We are not using a standard network protocol. Firmware must be in C for an 8 pin PIC PIC12F1822-I/P-ND. The sensor network cable will have a total length of up to 500 ft so the firmware must consider noise immunity. Confidential details will be provided to qualified applicants after which you can fine-tune your bid.
Category: Electrical       
Skills: Electronics, Microcontroller       

m****log
 [?]
Sign in to view client's details.
| m****log
|    United States
Fixed Price: Not Sure   |  Posted: Feb 23, 2015  |  Ends: 3d, 15h  |   14 Proposals
Hi We are seeking for freelancers who are able to write simple matlab codes (very small scripts within few lines) to be uploaded on a learning site in the following fields: Matlab basic Digital image processing Digital signal processing Control systems Wireless communications Power engineering applications Connect matlab with other applications Video processing Neural network applications Genetic algorithm applications Support vector machine applications Mechanical engineering applications Numerical analysis Linear algebra Wireless sensor network applications Solar cell applications Simulink applications Graphical user interface applications Financial applications Civil engineering applications no problem if those scripts are from the internet, but you should ensure that they run without errors and there is a comment on each command to describe its function. in addition, you should offer a brief description for each task If you are interested, kindly specify filed(s) that you can w...
Category: Other - Engineering &...       
Skills: Electrical Engineering, Electronics       

m****lab
 [?]
Sign in to view client's details.
| m****lab
|    Jordan
Fixed Price: Less than $500   |  Posted: Feb 22, 2015  |  Ends: 3d, 8h  |   28 Proposals
Custom PCB Design Based on Housing Constraints Atmel SAMA5D3 Cortex A5 512MB of RAM 16GB of Flash Specifications for items are available Project will be fixed fee. PCB fabricators are lined up. We will fabricate and test as needed. Joshua
Category: Electrical       

r****gg1
 [?]
Sign in to view client's details.
| r****gg1
|    United States
Symbol Key
Payment method not yet verified
Payment verified
Purchased $1-$500
Purchased $500-$5,000
Purchased more than $5,000
You have already submitted a
proposal to this job