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Fixed Price: Less than $500   |  Posted: 2h, 36m ago  |  Ends: 14d, 21h  |   9 Proposals
I am looking for instructions on designing a LED wired circuit. I currently have most of the parts and need instructions on how to connect them and make them work. I want to connect some RGB LED to the micro controller to be able to control the color. I am not sure what order or what resistors to use and where.
Category: Electrical       

p****dig
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| p****dig
|    United States
Hourly Rate: $10 - $15 / hr   |  Duration: Not Sure  |  Posted: 3h, 4m ago  |  Ends: 14d, 20h  |   0 Proposals
I want a miniature PSU (transformerless) design which can deliver dc output from a 100-250VAC input to charge a a li-poly battery correctly. Battery capacity is 8000mah- 12000mah.
Category: Electrical       
Preferred Location: Eastern Europe, India/Southern Asia, Eastern Asia

v****whk
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| v****whk
|    Hong Kong SAR, PRC
Fixed Price: $500 - $1,000   |  Posted: 11h, 59m ago  |  Ends: 14d, 12h  |   7 Proposals
We need help designing a very simple circuit, that will fit our specifications. We are trying to use the attached LED, with the attached LED driver (or an equivalent), but we don't know how to design an appropriate circuit for our specs. We want the LED to run at 18.2V and 1.2Amps. We don't need anything fancy, no PWM functionality. We just need to turn the LED on and off very quickly via a +/- 5V signal. Please see the "Shopping List" below for further requirements and specs. SHOPPING LIST: Input Power 24v dc-27v dc Battery 150AH Led Requirements 1. Build a linear array of 120 light that will be powered using a 24vdc 150 amp battery. 2. The lights will be mounted on a heat sink that will cool the lights to temperatures well below the required operating temperatures. 3. Regulate input to each led to 18.3v dc and limit amperage to 1.2 amps 4. Ability to turn light on and off 10,000 times per second for 14 micro seconds. 5. Each LED will have a dedicated driver to prevent t...
Category: Electrical       

4****ech
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| 4****ech
|    Canada
Fixed Price: Not Sure   |  Posted: 16h, 11m ago  |  Ends: 14d, 7h  |   1 Proposal
You will get a real life netlist of a combinational block (no memory elements). Your task, is using standard Python programming language Generate a new logically equivalent netlist which only uses NAND2 and NOR2 gates, which replace all the different gates that are there already.(refer block32 notepad for verilog code) Requirements: ? Code should be tidy and commented ? The code should work also on other netlists ? make it as generic as possible ? The netlist generated should be a legal verilog netlist including input, output declarations, wires, unique gate names etc. ? Tip: use a text editor that supports highlighted verilog syntax like: sublime text, Notepad++, Nedit or emacs ? Assume the drive strength to be X1 in all NOR2 an d NAND2 that you would use ? Code should be easily extended to new types of gates upon request ? i.e. when a new netlist comes with new gate types inside ? the change process should be easy
Category: Electrical       

r****n89
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| r****n89
|    Germany
Fixed Price: Not Sure   |  Posted: May 21, 2015  |  Ends: 13d, 14h  |   6 Proposals
In need of a circuit designer who can create a breakout board in Eagle CAD. The board should have programming pings broken out. Instructions for simple programming as well as for environment setup is needed. The breakout board should replace an expensive programmer. Example sketch and Eagle CAD files as well as all the instructions are part of the delivery. Somebody with experience with STMicroelectronics STM32L is preferred.
Category: Electrical       

u****mir
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| u****mir
|    United States
Fixed Price: Not Sure   |  Posted: May 21, 2015  |  Ends: 13d, 14h  |   10 Proposals
I need a circuit that can be used by an external microcontroller to communicate over ZigBee. The circuit should contain the zigbee chip, potential range extending amplification, antenna (one of chip-,wire-, pcb antenna) The range should be 1mile+ line of sight. The BOM cost should be kept minimal. Please include in your proposal your relevant experience. Also basic firmware should be part of the deliverable.
Category: Electrical       

u****mir
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| u****mir
|    United States
Fixed Price: Not Sure   |  Posted: May 21, 2015  |  Ends: 13d, 5h  |   6 Proposals
ABOUT SEVA: We are an expanding Brazilian IIOT (Industrial Internet of Things) company, in need of a simple and small project from outside. We drift between many different areas: automobile automation, home automation, health devices, precision livestock farming and much more. ABOUT THE PROJECT: We need someone for a small project. The candidate should be able to provide high quality product within good price range and for a reasonable time. We need to develop our own barcode scanner. It should be provided the ELECTRONICS (SCHEMATICS), a LIST OF MATERIALS, a LIST OF SUPPLIERS and the PROTOTYPE . It's simply a barcode reader. Check the image and videos attached for more details. THOSE ARE THE SPECIFICATIONS: BarCode Reader 1. Optics requirements Image sensor resolution : 720 x 480 pixels Rotational sensitivity: 360 Viewing angle: 40 Ambient light: Total darkness to 100,00 lux (full sunlight) Illumination LEDS: 626nm 30nm Working range: 5.3 cm to 33.5 cm depend on bar...
Category: Electrical       

s****asa
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| s****asa
|    Brazil
Fixed Price: More than $10,000   |  Posted: May 21, 2015  |  Ends: 13d, 2h  |   1 Proposal
Field Service / Applications Engineer Company Work Location: Waukesha, WI Salary: $60,000 - $80,000 Job Description: Experienced Field Service / Applications Engineer is required having responsibility to Supports Sales by evaluating the Technical/Commercial feasibility of a tender and help to clarify customer inquiries and specifications. Requirements: ? Experience with Mitsubishi, Fanuc, and Siemens controls is critical. ? Min. 2-3 years working experience with Turbo-expanders and/or Compressors. ? 5 to 10 years of experience in design engineering, applications engineering, high technology sales support, or field service. ? Requires knowledge of API, ASME, NEC (or IEC) codes. ? Experience integrating automation and motion control components such as motors, feedback devices and servo drives and controllers ? Process design knowledge, experience reading and interpreting technical specifications, and familiarity with technical drawing sets. ? Ideally someone with experience in...
Category: Electrical       

P****era
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| P****era
|    India
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: May 20, 2015  |  Ends: 12d, 19h  |   14 Proposals
We are developing an integrated circuit board for remote data acquisition, and remote control of solid-state relays, for solar power systems in remote, off-grid healthcare facilities in sub-Saharan Africa. We call this circuitry the RMC Unit (Remote Monitor and Control). We have engaged a PCB design company to design the board. The RMC uses a variety of sensors to gather necessary data. Today. we need help in determining which sensors will be used, so that the PCB design firm can select the correct ports. Further, our in house team lacks experience in PCB design. We need someone with extensive experience who can answer questions and offer guidance. Experience developing relevant circuitry is crucial. Experience with sensors (voltage, current, and temperature) is important. As are basic programming skills. We are looking for an on-going working relationship. We expect to have further technical hurdles in the coming months for which we will need help. Feel free to contact ...
Category: Electrical       

S****gan
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| S****gan
|    Rwanda
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: May 20, 2015  |  Ends: 12d, 14h  |   10 Proposals
I am looking for somebody to programming and coding Arduino products and acknowledges the wide range of official Arduino boards, shields, kits and accessories.
Category: Electrical       

s****ina
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| s****ina
|    United States
Fixed Price: $500 - $1,000   |  Posted: May 20, 2015  |  Ends: 12d, 8h  |   10 Proposals
The object is to build a web based application Takes input in the form of a collection of one or more images The input will also include a structure/arrangement of images. Identify similar structure in a large set of PDFs containing images Display results that match the structure and individual input images The above application will be used to find presence of small circuits within large circuits. So a user can provide images of two transistors connected in a particular way. The system will then find simlar arrangement in all the other circuit images that it has in its database. Opencv can be used for image processing. Type of application development required: New Application Integration requirements: Standalone Application Purpose or functionality of application: Take set of images as input Take structure as input. Structure defines how these images are arranged w.r.t each other Identify similar structure/arrangement in the set of available images in the database Produce set...
Category: Software Application       
Skills: Linux System Administration, Python, OpenCV       

p****987
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| p****987
|    India
Fixed Price: $50 - $250   |  Posted: May 19, 2015  |  Ends: 11d, 19h  |   5 Proposals
Electrical engineering & Soldering rework small project - need sharp soldering Would be nice if you are local so we avoid shipping and time delay - but not a showstopper Best AK
Category: Electrical       
Preferred Location: United States

a****izb
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| a****izb
|    United States
Fixed Price: $20 - $25   |  Posted: May 19, 2015  |  Ends: 11d, 6h  |   11 Proposals
Arduino coding for the Temperature Controller, Read data through temperature sensor; Minimizing Error (Data ? Set-point) by PID controller and then send PWM and direction to Polulu motor driver to control Peltier Heating and cooling system, for bringing the temperature to the set-point and Display Temperature (C/F) to LCD. I'm going to attach the proposal for my project.
Category: Software Application       

s****chs
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| s****chs
|    United States
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: May 18, 2015  |  Ends: 10d, 18h  |   5 Proposals
Hello there, My name is Drew & I design and work with analog video circuitry. I have a basic understanding of electronic circuit design, very basic, I am self taught. On my most recent design I've run into a problem that I cannot really explain and I am looking to get a professional take on my trouble. Long story short, I have a small video fx processor. On top of being a cool analog video device with a bunch of control knobs it features an audio input function. I have an audio input going to a TIP31 bipolar junction transistor which is amplifying my audio signal and driving my LED light to the db of the incoming audio signal. The goal is for this LED to be the LED portion of a vactrol. Upon driving the LED everything behaves as it should until suddenly at an unpredictable moment, while noodling around with the fx knobs on my unit (perhaps the LED lighting in conjunction with a particular knob position), the whole board goes bad. By bad I mean the LED keeps on blinking... but ...
Category: Electrical       

d****-m1
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| d****-m1
|    United States
Hourly Rate: $10 - $15 / hr   |  Duration: 7-9 months  |  Posted: May 18, 2015  |  Ends: 10d, 12h  |   1 Proposal
Looking for an electronic technician with experience in soldering and assembly of electronic components as well as maintaining and tracking inventory. Must be located in DC metro area. Job site is located in Alexandria, VA
Category: Electrical       
Preferred Location: United States

g****usi
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| g****usi *
|    United States
Fixed Price: $200 or less   |  Posted: May 15, 2015  |  Ends: 7d, 18h  |   1 Proposal
We need someone who is specialised in 1) Nanowire circuit 2) TFT 3) Material Engineering Our product is a display on transparent material. Individual bidder is preferred, with a Master Degree or above in Electronic Engineering. You will need document revision on R&D methodology, content and specifying the deliverables and deliver before next Wednesday. The payment will be due at satisfying the proposal after review of theTechnical Department.
Category: Electrical       

j****103
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| j****103
|    Hong Kong SAR, PRC
Fixed Price: Not Sure   |  Posted: May 14, 2015  |  Ends: 21d, 10h  |   15 Proposals
Currently I have a User Interface PCB design that works in our products (Homogenizer). However, we are wanting to make updates and add more functionality. This will be a relatively simple project. We own all of the board files and schematics. These files will need to be used to further optimize the design for manufacturing as well as incorporate a few minor changes. The individual needs to be skilled at PCB design and Electrical Development. Please feel free to contact with any further questions and details if interested. We will be able to provide the project scope.
Category: Electrical       
Preferred Location: United States

C****mni
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| C****mni
|    United States
Fixed Price: $100 - $250   |  Posted: May 14, 2015  |  Ends: 6d, 9h  |   9 Proposals
I want to build a 2-bedroom cottage in a remote area where sun is aplenty (Siem Reap region in Cambodia), but where I cannot count on a reliable utility company. Therefore, I need to put together a self-sustainable source of electricity (110V-50Hz) for the lighting, fridge and some electronic devices (TV, radio, computer, etc.). I estimate my needs to require at least a battery storage capacity of 3KW battery storage (looking at the newly-announced Tesla Powerwall, but a bank of gel deep cycle (200Ah) batteries could also do the job. I did some research and found most of the major components I need (PV panels, MPPT charger, batteries, Inverter). I am looking for someone qualified to: 1) Validate my components for compatibility and balance. 2) Provide a more complete BOM, including jump cables, wiring, junction boxes, switches, remote control panel, etc. 3) Draw a detailed diagram of how the various components are attached to one another, with proper minimum distance between them if...
Category: Electrical       

V****run
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| V****run
|    Canada
Fixed Price: Less than $500   |  Posted: May 13, 2015  |  Ends: 5d, 11h  |   17 Proposals
Hi Guys, I am stuck with MOSFET over heating issues. I really need to resolve this fast. Behind schedule and over budget. How is $100 to the first person who steers me to success? Details are here ...   [obscured]  /support/power_management/non-isolated_dcdc/f/196/p/421954/1508657#1508657 I prefer not to award this to any single person, and tie this up longer. I need suggestions / answers immediately. Once I get the circuit to work from your guidance, I can award / pay. I am hoping to find a power expert that has seen and fought this fight before, not just anyone who is tossing out random suggestions (although I would take that now)
Category: Electrical       

r****ics
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| r****ics
|    United States
Fixed Price: Less than $500   |  Posted: May 12, 2015  |  Ends: 4d, 10h  |   1 Proposal
Extensive experience in building structured cabling for computer rooms and offices , configuration , support and maintenance of computer equipment and other devices. Experience in teaching at the undergraduate level in the subjects of Mathematics , Physics , Technology, Computer and others.
Category: Other - Engineering &...       
Skills: Integrated Circuits, Electronics       

m****z82
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| m****z82
|    Colombia
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: May 12, 2015  |  Ends: 4d, 8h  |   2 Proposals
We had an interior designer draw up our lighting plan for our bar business. We need a certified Electrical Engineer to sign off on our lighting plan so that we can submit to the city of Redondo Beach, CA.
Category: Electrical       

t****ita
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| t****ita
|    United States
Fixed Price: Less than $500   |  Posted: May 11, 2015  |  Ends: 3d, 13h  |   27 Proposals
Looking to have someone design a small circuit for me, I will give more information in person. Looking for someone who can deliver quickly
Category: Electrical       

P****360
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| P****360
|    Canada
Fixed Price: Not Sure   |  Posted: May 11, 2015  |  Ends: 3d, 1h  |   8 Proposals
I need help designing an amplifier. Below is the spec needed 2x 50W (min) Class A/D Digital to analog converter Optical, Coaxial & USB digital inputs. 2 x RCA Analog input 1 x Phonostage 1 x XLR analog input Wireless module for audio transfer (not bluetooth)
Category: Electrical       

A****rth
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| A****rth
|    United Kingdom
Fixed Price: $1,000 - $5,000   |  Posted: May 10, 2015  |  Ends: 1d, 21h  |   16 Proposals
We are working on a project that uses Raspberry Pies and currently use serial-to-usb convertors to receive serial input from 2 sources. We lack opto isolation & this is not a solution we can repeat without great effort. So instead we need a board designed that does that and is easy to add to the Raspberry Pi. Design a board that has at least 2 (serial) inputs (more = better) with opto isolation. Every incoming connection will be a copper cable pair, not your typical 9-pin serial port. We also need guidance with where to have these made, in greater numbers (500 at least). Please propose what you can create as a board (how many inputs, and don't forget to opto-isolate every input) and what your estimated size and production price board would be, based on a rough estimate of the parts used & production process cost. #THANK YOU
Category: Electrical       

k****cho
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| k****cho
|    Belgium
Fixed Price: Less than $500   |  Posted: May 09, 2015  |  Ends: 1d, 9h  |   10 Proposals
We have developed a new design having rf components, during the sample test stage we have noticed certain issues and looking for validation by third party rightly experienced in this. The prospective person must be having atleast 10 years experience in designing & layout and pcb and well known to RF/ESD issues. He is supposed to find the issues and then implement changes in the schematic and layout which has been done using Altium.
Category: Other - Engineering &...       

m****nuk
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| m****nuk
|    India
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