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Fixed Price: $1,000 - $5,000   |  Posted: 48 minutes ago  |  Ends: 25d, 21h  |   3 Proposals
I am using a CFD program CONVERGE to simulate engine operation. The compression chamber has small leak passages, on the order of 1mm^2, from which the compressed gas leaks during the engine cycle. Modeling these leaks is inefficient due to the small mesh size required, and this slows the simulation computing time dramatically. I would like to hire someone who can modify the CFD code using a "User Defined Function" which will uniformly remove mass from the chamber as a function of time, at a prescribed rate, without physically modeling an orifice to the atmosphere. Please contact me for details.
Category: Mechanical       
Skills: Computational Fluid Dynamics (CFD)       

M****son
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| M****son
|    United States
Fixed Price: Less than $500   |  Posted: 3h, 24m ago  |  Ends: 14d, 20h  |   0 Proposals
I'm looking for some one who can do my cource work which is about dc-dc converter all the details are attached here ,so please let me know if you need any further information. just read Bidirectional DC-DC Converters for Energy Storage Systems and answer all the questions and do the report as well. thanks
Category: Electrical       
Skills: Electrical Engineering       

e****lfa
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| e****lfa
|    United Kingdom
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: 8h, 1m ago  |  Ends: 14d, 15h  |   7 Proposals
Working on an industrial design prototype that requires knowledge of basic mechanical movements, solar energy and motor specifications. Open to discussing project rate/ hourly rate ...as well as possible business collaboration for this well received concept with excellent opportunity for mass market appeal and huge profits. Please be willing to sign a Non disclosure agreement.
Category: Mechanical       

j****316
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| j****316
|    United States
Fixed Price: Less than $500   |  Posted: 12h, 40m ago  |  Closed  |   4 Proposals
I'm looking for some one who can do my cource work which is about dc-dc converter all the details are attached here ,so please let me know if you need any further information. just read Bidirectional DC-DC Converters for Energy Storage Systems and answer all the questions and do the report as well. thanks
Category: Electrical       
Skills: Electrical Engineering       

e****lfa
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| e****lfa
|    United Kingdom
Fixed Price: Less than $500   |  Posted: 23h, 24m ago  |  Ends: 14d, 0h  |   8 Proposals
We have a signal light tower, model ME-A, that needs to be connected to an integrated circuit wafer processing machine. There are three lights: red, amber, and green. See the first attached image. The second attached image has details on the required electrical connections. We need to turn the lights on and off from a computer. The computer interface is an Adlink 7442 PCI card with isolated digital outputs. See the attached data sheet. We should be able to attach three signal lines and a ground line from the 7442 to one side of the Light Control Circuit board, and the red, orange, green, and yellow wires from the light tower to the other side of the Circuit board. There should also be provision for 24V power. Given the schematic and part numbers, we can probably build it ourselves, but preference will be given to proposals that include fabrication and delivery of three circuit boards. I use the phrase "circuit board" loosely. It doesn't have to be a printed circuit...
Category: Electrical       

q****dex
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| q****dex
|    United States
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: 23h, 52m ago  |  Ends: 14d, 0h  |   10 Proposals
Design or source and assist in manufacturing a MR16 LED driver that is capable of powering a 10 watt LED from major manufacturers including Phillips, Sorra, and TCP. Driver MUST be dimmable down to 5% (preferably 1%) with either forward or reverse phase (leading edge or trailing edge) triac dimming, preferably both. High efficiency electronic driver is preferred. Project phases include design or sourcing of driver and housing, building driver and housing prototype, testing, and assist in manufacturing. Final driver must be ETL of UL certified.
Category: Electrical       

j****738
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| j****738
|    United States
Hourly Rate: $20 - $30 / hr   |  Duration: 1-2 weeks  |  Posted: May 02, 2015  |  Ends: 13d, 22h  |   3 Proposals
We are looking for a mechanical and electrical engineer to be able to connect an iPad as a payment system for a coffee machine.
Category: Electrical       

l****age
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| l****age
|    United States
Hourly Rate: Not Sure   |  Duration: 1-3 months  |  Posted: May 02, 2015  |  Ends: 1d, 21h  |   2 Proposals
Software and Hardware development of a XBee or ZigBee based system using both .1watt and Spread Spectrum transmitters. System low development using Aurdrino or Digi International OEM hardware. System consists of Peer to Peer Environmental control components. Need to interface into a OEM interactive software control package.
Category: Electrical       
Skills: Wireless Network Implementation       

M****ols
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| M****ols
|    United States
Fixed Price: Less than $500   |  Posted: May 02, 2015  |  Ends: 1d, 20h  |   4 Proposals
looking for a prototype with 5 push-button sound module that will be powered by AA batteries and can be play up to 5 minutes of music. Each push button is related to one of the audio file and The device/circuit must play one of the 5 mp3 files at a time when the push-button is activated and stop the rest. the speaker and file storage should be part of the prototype. please list out individual component selection and specifications. the prototype must be complete with in itself, meaning it must play the sample files when activated with no additions needed to make it work.
Category: Electrical       
Skills: Electrical Engineering, Electronics       

n****llc
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| n****llc
|    United States
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: May 02, 2015  |  Ends: 28d, 19h  |   14 Proposals
Design a PCB based on a prototype made with Arduino Mega. I have all boards and components schematics used in the construction of the prototype. Also within the design work, is to search components that have the same functionality but to lower the cost of the final product. ------------------------------------------------------------------------------------------ Diseñar una placa PCB en base a un prototipo hecho con un Arduino Mega. Tengo los esquemáticos de todas las placas y componentes que se utilizaron en la construcción de este prototipo. También dentro del trabajo de diseño, es buscar componentes que tengan las mismas funcionalidades pero que bajen el costo del producto final.
Category: Electrical       
Skills: Electrical Engineering, Electronics       

r****ell
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| r****ell
|    Chile
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: May 02, 2015  |  Ends: 13d, 15h  |   9 Proposals
Hello, I am interested in creating a sewing tool with special features. Please contact me where I can enumerate on it's functions further. Thank You!
Category: Mechanical       

a****187
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| a****187
|    United States
Fixed Price: $1,000 - $5,000   |  Posted: May 02, 2015  |  Ends: 13d, 10h  |   8 Proposals
We have do execute electrical modifications on the Heathrow airport baggage handling system. It is our plan to subcontract the work to implement modifications on the lelectrical drawings. We would support redlined drawings and the eplan files. The documents can be handed out in our office in Heathrow, send by mail paper wise or we just email the relevant redlined pages. There is also the possibility to do the work in our office in Heathrow. We are about to produce the redlined drawings in the next 2 weeks and then we can give a estimate about the numbers of pages. The target of this description is to get first contacts.
Category: Electrical       

f****nig
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| f****nig
|    United Kingdom
Fixed Price: Less than $500   |  Posted: May 02, 2015  |  Ends: 13d, 9h  |   0 Proposals
1.) Design the cell assigned to you with the following specifications using a layout editor(magic, etc..) a.) 0.5 Micron technology b.) Layouts fit in a 20 micron by 40 micron box c.) Balanced rise and fall delays 2.)Extract the circuit netlist for your cell and run SPICE simulations to study your cell performance 3.) Write a complete VHDL model for the cell using obtained values from the SPICE simulations 4.)Simulate your cell model (ModelsSim) and show in circuit results in comparison to circuit ( SPICE simulations) Expression:- Not((a+b)(c+d))
Category: Electrical       

l****eja
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| l****eja
|    India
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: May 01, 2015  |  Ends: 12d, 23h  |   2 Proposals
I will need a set of 4 acrylic glass sheets (2 are identical) ? 1 Front part ? 2 Left and Right part ? 1 Upper part I need 100 sets. Material : Clear Acrylic Glass 3.2mm (1/8 ") The edge/sides need to be clear polished (No burr, no chips). Laser cutting prefered. Clear plastic protection film on both sides Please refer to attached drawing. Your quote by Monday 5/4 EOB will be greatly appreciated. Please include your lead time in the quote. Parts are to be shipped in California USA. Please indicate the packaging and shipping cost. Thank you. Serge
Category: Mechanical       

d****eip
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| d****eip
|    United States
Fixed Price: Less than $500   |  Posted: May 01, 2015  |  Ends: 12d, 23h  |   15 Proposals
I have a small project that entails programming a Atmel ATTiny841 microcontroller. The controller will receive a serial input command and will need to send PWM signals to three output pins based on the input command. I have already proto-typed this using the Arduino Uno. I have the code written using the Arduino commands. I need someone to rewrite this code for the ATTiny841 in Atmel Studio 6.2. I can share design schematics, block diagram, pseudo code as well as my Arduino Uno code. I need someone who is proficient in Atmel uC programming who can do this profesionally with the correct libraries etc..
Category: Electrical       

g****m40
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| g****m40
|    United States
Fixed Price: $500 - $1,000   |  Posted: May 01, 2015  |  Ends: 12d, 21h  |   4 Proposals
I'm not sure how feasible or complicated this is, so I welcome suggestions or estimates from someone able to achieve it. Local providers preferable. I'd like to use the video signal going to a monitor and make it display only the pixels containing a particular shade of gray/luminance at a time, while turning on separate mood lights for each shade/luminance. This would be for an art project to add different color backlights according to the grayscale images that are being displayed. Similar to the typical color backlights in some TVs, but it will only show pixels of the same brightness on the screen at the same time, instead of the whole image. For example: 1- Monitor displays only the pixels with 0-10% brightness (for any image or video being played), and turns on a yellow LED strip mood light. All other pixels remain black. 2- Next, the monitor displays only pixels with 11-20% brightness and turns on a blue LED strip ... and so forth, until it displays the pixels for all luminance...
Category: Electrical       
Preferred Location: United States

s****ins
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| s****ins
|    United States
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: May 01, 2015  |  Ends: 12d, 20h  |   3 Proposals
I have a custom PCB based around the Freescale i.MX6 that needs to have simulation done on its DDR3 interface. Depending on how that goes there could be follow on with the eMMC and PCIe interfaces being simulated. Must be done in Altium and then the files passed back because we need to run the simulation in house on our Altium installation. The design files will not be allowed outside of the United States.
Category: Electrical       
Preferred Location: United States

R****-iQ
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| R****-iQ
|    United States
Fixed Price: Less than $500   |  Posted: May 01, 2015  |  Closed  |   7 Proposals
I have 3 conceptual designs of a human powered tractor. The designs should be differentiated from each other by a written report. I can explain the mechanisms and go further into details through a skype call if necessary. The deadline is in 3 days. A sample report of another product is attached.
Category: Mechanical       

s****abi
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| s****abi
|    United Arab Emirates
Fixed Price: Not Sure   |  Posted: May 01, 2015  |  Ends: 12d, 16h  |   9 Proposals
I have an idea for a medical scar product. I would like an engineer to work with me to handle the technical aspects. This project will address feasibility and design. Please contact me by PMB if you have any questions.
Category: Mechanical       

d****aik
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| d****aik
|    United States
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: May 01, 2015  |  Closed  |   9 Proposals
Schematic Design & Detailed BOM. Looking for support to develop first step of new product that includes bluetooth, microcontroller, accelerometer, microphone, LED, chip antenna, primary coin cell, plus components to complete circuit and achieve low-power consumption objective.
Category: Electrical       

j****yiv
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| j****yiv
|    United States
Fixed Price: Less than $500   |  Posted: May 01, 2015  |  Ends: 12d, 13h  |   13 Proposals
I want to make electrical drawings from manual sketches. Sotware to be used is Autocad electrical or Xrelais.
Category: Electrical       
Skills: AutoCAD, Electrical Engineering, Electronics       

z****sem
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| z****sem
|    Tunisia
Hourly Rate: Not Sure   |  Duration: 1-3 months  |  Posted: May 01, 2015  |  Ends: 12d, 13h  |   6 Proposals
Need a circuit than can track a pencil or similar type line as a device moves along it and sends signals to two or four stepper/servo motors or other position controllers to keep the device in line by compensating for any drift within 6 mm (or more). The device consists of an inner and outer frame. The outer frame is for large movement. The inner frame is for precision movement. The outer frame moves horizontally, parallel to the line and is not electronically controlled. The inner frame holds the tracking unit. It is the tracking unit that adjusts while the outer frame is moving. If the outer frame begins to move out of the range of the inner tracking unit, an indicator comes on indicating the direction to move the outer range otherwise the inner frame adjusts automatically to maintain position. The inner unit can move via the servo motors or similar position controllers +/- 3 mm. This is the minimum acceptable range. Greater range is desired. Summary: Device tracks along a line Co...
Category: Electrical       

J****BUS
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| J****BUS
|    United States
Hourly Rate: Not Sure   |  Duration: 1-2 weeks  |  Posted: May 01, 2015  |  Ends: 4d, 9h  |   3 Proposals
I am looking for VHDL implementation of LMS ALGORITHM based Adaptive filter. A system should perform FIR operation with fixed coefficient value. If any noise is added to system output it has to regenerate the coefficient using LMS Algorithm to maintain Output constant according to input. Total number of input should be 500 and all the operations (addition, Subtraction and Multiplication) which are taking place should be in floating point numbers. I need this job to be completed in next 5 days. I have a MATLAB code for this.i can provide that to you. Even we can have a discussion over Call/Skype/to give you the understanding of this topic.
Category: Electrical       
Skills: Electronics, Verilog / VHDL       

v****agi
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| v****agi
|    India
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