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Results for 'Electronics Circuit Design'
Fixed Price: Not Sure   |  Posted: 2h, 28m ago  |  Ends: 14d, 21h  |   2 Proposals
Hi, I need a high voltage circuit designed. I need to be able to transform a low voltage (ideally between 12-24V) to a very high voltage of 45,000V, so there is a potential difference between two electrodes 45,000V (i can then vary the electrode size, distance to create the desired electric field strength etc). The output voltage needs to be variable to a minimum of the low input voltage and to a maximum of 45,000V.
Category: Electrical       

b****691
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| b****691
|    United Kingdom
Fixed Price: Less than $500   |  Posted: 5h, 31m ago  |  Ends: 6d, 18h  |   2 Proposals
hello Guys, i have a small electric circuit working with generator principle that needs to be improved. a PCB with coil on it passes by a magnet. the induced Voltage is then kept in Ecaps and is slowly released to drive 2 standard LEDs. please see attachment. the whole PCB is rather simple. only 9 components so far. in case there is small money needed for component etc, we will pay extra or ship from here...
Category: Electrical       

S****ial
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| S****ial
|    Germany
Fixed Price: Less than $500   |  Posted: 7h, 49m ago  |  Ends: 14d, 16h  |   11 Proposals
I have gerber file for simple frequency generator -need assembly with lcd PIC and digikeypad -need 4 to 10 every week and pay $25 per unit plus shipping-I will send you plastic box to finish unit and mail every week. You must know how to assemble pcb program unit and ship me finished working units.
Category: Electrical       

d****est
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| d****est
|    United Kingdom
Fixed Price: Not Sure   |  Posted: 22h, 6m ago  |  Ends: 29d, 1h  |   9 Proposals
Temperature control utilizing a 1000 ohm RTD input designed to output to a 3-32vdc solid state relay. The temperature control features power saving functions such as standby (reduced heat) and sleep (self power off) modes, a remote encoder / pot w/ momentary for user input, LED display and other calibration parameters. There should be an output to power (activate) other or additional modules and sleep mode may be inhibited by an external feedback from such other modules. Of particular interest is temperature calibration and related duty cycle settings as described later.
Category: Electrical       

p****ian
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| p****ian
|    United States
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Jul 30, 2015  |  Ends: 13d, 15h  |   15 Proposals
Need a talented engineer with demonstrable portfolio of work to help assess a product I have in mind. It incorporates Bluetooth low energy and another communication circuit that relies on the BLE. At this stage all I require is a very simple 'study' on whether the concept can work. From there happy to discuss moving into potential design phase. We can discuss more clearly deliverables when you apply.
Category: Electrical       
Skills: Electrical Engineering, Electronics       

N****L83
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| N****L83
|    Australia
Hourly Rate: Less than $10 / hr   |  Duration: 1-2 weeks  |  Posted: Jul 29, 2015  |  Ends: 12d, 22h  |   0 Proposals
BID IF AND ONLY IF YOU MEET THE CRITERIA BELOW AND CURRENTLY IN THOSE COUNTRIES COUNTRIES OF STUDY UK, France, Germany, Italy, Spain, UAE and South Africa PROJECT BRIEF Identify users and evaluators of hardware-in-the-loop (HIL) simulation/testing tools among engineers at any level engineering management (lower levels to C-level). CRITERIA 1.Respondent's organization should have embedded controllers/control systems, ECUs, embedded software in design/development or production. 2.Hardware-in-the-loop (HIL) simulation/testing tools" as a tool on embedded projects in past, current or upcoming three year projects in respondent organization. 3. Respondent responsible for using / managing team of HIL users and for selection of HIL tool / testing solutions INDUSTRY Out of 35, we want at least 15 to be from Auto, at least 7 to be from Military/Aerospace, and the rest can be from any industry TARGET Engineers and any level of engineering management (from first...
Category: Other - Engineering &...       

W****mor
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| W****mor
|    Nigeria
Fixed Price: About $20   |  Posted: Jul 28, 2015  |  Ends: 12d, 9h  |   1 Proposal
I have an audio source (portable cd player) connected to an amplifier through the AUX In. At the push of a button (preferably wireless) I need to have a device interrupt the current audio source by lowering its volume and instead feed a pre-recorded message to the AUX In to be played on the Receiver. The message is no longer than 30 seconds. This is similar to PA systems where when the announcers starts to talk the music is lowered. These are my constraint: 1. The solution has to be an existing device (or multiple devices) that integrates with my current setup. No computer solution. 2. I need to be able to easily record a new announcement on the device. 3. The cost should be less than $200.
Category: Electrical       

d****ava
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| d****ava
|    United States
Fixed Price: $500 - $1,000   |  Posted: Jul 28, 2015  |  Ends: 12d, 3h  |   14 Proposals
We are looking for a partner who could help us to develop an IOT box which will contain up to 48 home keys. The box should be able to be opened via password provided though the app which we are building already. The Box will have a safe type pin code lock and the password will be provided via the app. Once the user input the passcode, then the door of the box and lock of the specific key will be opened. The box will be powered via ac adapter and wifi/lan cable should be available. The box size should be under 50cm high, 30cm wide and 10cm deep. The box material can be anything light weight but need to have strength that normal human can not penetrate with bare hand. The box must have water proof version and non water proof version. Below is a spec which we assume. Bluetooth Option Spec: - 5V Power supply for controller - 24V Power supply for lock device - Microcontroller module 400Mhz - Bluetooth 3.0 module - Relay switch - Electric door lock device - Developed firmware - 9-...
Category: Electrical       

m****ly1
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| m****ly1
|    Japan
Fixed Price: Less than $500   |  Posted: Jul 28, 2015  |  Ends: 12d, 3h  |   10 Proposals
We have existing project done in Allegro and now want some changes to be done in mainly layout as some of the component placement has to be changed. There may be some minor schematic change as well. If you have good experience on PCB schematic and layout using Allegro, only then bid.
Category: Other - Engineering &...       
Preferred Location: China

m****nuk
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| m****nuk
|    India
Fixed Price: Less than $500   |  Posted: Jul 28, 2015  |  Ends: 12d, 2h  |   15 Proposals
Hi there, I'd like someone to build a 12v circuit for me that provides a 60hz sinewave oscillator. We'll later take this sinewave oscillator and use some MOSFET transistors to amplify the signals. We'll then connect a transformer to create a 12v-to-120v inverter capable of 5000 watts. The power source of the inverter will be a 12VDC deep cycle battery rated at 110ah @ 20 hours. The battery will also be connected to an alternator providing 100 amps at 14.3 VDC. If you can build the oscillator, that's all we need for now - but if you think you can build the whole project, then great - please indicate that in your proposal. I look forward to your proposal! Please include the word "inverter" in your proposal so that I know you read this project description. Here's some reference material:   [obscured]  /watch?v=VDi_uFSr3w0   [obscured]  /wp/?p=415 I'd like the inverter to be as close to pure sinewave as possible, but that objective will be limit...
Category: Electrical       

m****ert
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| m****ert
|    Canada
Fixed Price: Not Sure   |  Posted: Jul 28, 2015  |  Ends: 11d, 21h  |   4 Proposals
looking for a company to design and prototype a sliding gate motor with remote controls. A sample sliding motor with remotes will be provided to the right company. The manufacture cost of the motor must be $50. Company must have mechanical and electronic design experience. A sample sliding gate motor can be provided to aid in the design. Most important aspect is to reduce production cost of the motor. Target production cost must be no higher than $50.
Category: Product Design       

r****014
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| r****014 *
|    South Africa
Fixed Price: Not Sure   |  Posted: Jul 27, 2015  |  Ends: 10d, 17h  |   4 Proposals
Hi we are seeking for an expert freelancer to develop and model a solar power system using an artificial neural network To accept your bid, kindly provide us with a brief description concerning both the contribution (enhancement that will distinguish your work from previous ones) and the methodology to be conducted
Category: Electrical       

m****lab
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| m****lab
|    Jordan
Hourly Rate: $10 - $15 / hr   |  Duration: Not Sure  |  Posted: Jul 27, 2015  |  Ends: 10d, 13h  |   13 Proposals
I am having the circuit design ready and I am very new to Altium designer . I have tried to make the schematic diagram but do know how to make PCB layouts and use which PCB material for high frequency application. Need ur help in components layouts on PCB inorder to have minimum track length .As i will give you the schematic diagram so u can make changes in it to have minimum track length .The circuit is complex its just 9 stage villard voltage doubler......
Category: Product Design       

j****915
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| j****915
|    New Zealand
Fixed Price: Less than $500   |  Posted: Jul 26, 2015  |  Ends: 10d, 7h  |   3 Proposals
I am looking for a circuit designer (and possibly builder) who can use Broadlink Home Automation DNA to create an item that work through the Broadlink RM PRO to call lighting scenes. Broadlink is an existing semi-open source home automation system manufactured in China. The electronics seem quite high quality and they have created an aspect to their system called Broadlink DNA. This is a way that almost any other electrical appliance can communicate with the Broadlink hubs. Broadlink is a way of storing and centralizing remote commands for various light switches, TV and airconditioning systems. By using an APP on your mobile the system calls the stored commands and broadcasts them. What I am looking to do is create a unit that has a set of buttons that can be programmed through the APP to call scenes from the Broadlink. The scenes are a series of commands that activate a set of devices. This could be a "arrive home scene" where all the lights in a living area are switched ...
Category: Electrical       

b****own
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| b****own
|    New Zealand
Fixed Price: Less than $500   |  Posted: Jul 26, 2015  |  Ends: 10d, 1h  |   5 Proposals
Hello, I am looking for ideas / approached / protocol suggestions on a wireless device implementation. Please do not bid on this if you do not have working experience with this type of network! I will not pay if you do not have real experience! My application has a master base / router to send out ON and OFF commands to the end devices.Each end device needs to be individually separately controllable. The end device is battery powered and controls a light. There is no real data to send upstream, so one way may be an option. The tricky part ... it needs to support 500,000 devices under the same roof. The protocols I have reviewed thus far will not support this many devices. So I am looking for protocol suggestions and frequency bands. Again DO NOT respond if you do not have real, successful, hands on experience! Thank you PS this device does not have to communicate on or over the internet. Additional information: The network topologies is open. I am able to use wired or wireless re...
Category: Electrical       

r****ics
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| r****ics
|    United States
Fixed Price: Less than $500   |  Posted: Jul 26, 2015  |  Ends: 10d, 0h  |   11 Proposals
Hello, I am looking for additional ideas / approached on a LiPo charger circuit. Requirements: Schematic - can be hand drawn if very legible Single cell LiPo battery (100mah, with no secondary protection) +5V input voltage And the final, most difficult requirement... Total BOM cost of <$ 0.20 USD in volume. This will eliminate the typical LiPo single chip charger solutions. Probably will require discrete components. Additional information: Charging source is a USB port so figure 5V 100ma Over voltage charging protection is required. Deep discharge protection is required. There is a micro already available, so a digital I/O and ADC is available for intelligent control. That can be used to enable a series pass transistor, and ADC to monitor voltage. You would need to provide all scaling / and interface circuitry. Low bat indicator is desirable, can use micro ADC if needed.
Category: Electrical       

r****ics
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| r****ics
|    United States
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Jul 24, 2015  |  Ends: 8d, 1h  |   11 Proposals
Greetings, I'm a patent holding developer in search of a creative, active individual or group that can supply various control panels for several products I am currently prototyping. I can provide the necessary function of the device along with it's intended placement and user interaction but the development of the underlying electronics is beyond my expertise. So my ideal candidate is someone who messes around with this sort of stuff for fun and can take a concept and build AND SHIP me a finished product that I just connect and go and continue the development of the prototype. Thanks, Jeff
Category: Electrical       

j****phx
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| j****phx
|    United States
Fixed Price: Not Sure   |  Posted: Jul 24, 2015  |  Ends: 7d, 23h  |   6 Proposals
We have a project to build some prototype boxes with a mind to producing approx 10 per week later in the year I want someone to price and build the first box. I will work closely with you to deliver it. The box will hold an intel NUC, a 5 port switch module and aphantom power audio preamp. It must be able to all be powered from POE and provide POE to one of the network outputs. I have sourced the NUC and included details on the diagram I have sourced the POE splitter and injector Only the green items on the diagram remain open to source by you. The case should be plain and simple, standard off the shelf aluminium section is fine by me with custom end plate. but I am flexible and happy with suggestions included 3D printed. Please only send me details if you speak fluent english and send me your skypeID. I would like a price for delivery of the first box - if you need to ask me questions you can caveat your price with assumptions. I will assess the box with videos and photos etc...
Category: Electrical       

N****osi
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| N****osi
|    United Kingdom
Fixed Price: Not Sure   |  Posted: Jul 24, 2015  |  Ends: 7d, 12h  |   22 Proposals
I would like to create a circuit that controls 2 muscle stimulating electrode pairs with an arduino UNO micro-controller. Attached is the current circuit which works well for the stimulating electrodes, however there are a few changes I would like to implement to this configuration: - I would like to be able to adapt this circuit so I can control their on/off state using the arduino. This includes precise timing of when the electrode's become active and the duration for which they remain in the 'on' state. - I would like to be able to keep the integrated intensity control If this is a job you would like to take on, please do not hesitate to contact me and I will be happy to discuss details, any queries you may have and provide a full request for quotation. Kind regards, William Markiewicz
Category: Electrical       

W****mkz
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| W****mkz
|    United Kingdom
Fixed Price: Not Sure   |  Posted: Jul 23, 2015  |  Ends: 7d, 6h  |   10 Proposals
I need help putting together a control unit for a custom sous vide. I first looked at using a PID system but was told that a programmable touchscreen control could be the better way to go. I have a little electrical background but this is pass me. I need a unit to control the temp and time like a PID but I need preset buttons to hold set profiles. If this is something you could do please let me know. Thank you.
Category: Electrical       

R****use
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| R****use
|    United States
Fixed Price: About $200   |  Posted: Jul 23, 2015  |  Ends: 6d, 23h  |   21 Proposals
We want to have a PCB layout created using Altium Designer. The board will have 2 layers and will require panelization. We will need source Altium Designer files as well as fabrication files which can be used by a manufacturer for production.
Category: Electrical       

m****uja
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| m****uja
|    United States
Fixed Price: Less than $500   |  Posted: Jul 23, 2015  |  Ends: 6d, 13h  |   9 Proposals
Hi I'm looking for a Electronics engineering expert who can optimise the time existing PCB and also replace existing components with less expensive components with no deterioration in performance and also be able to reduce current consumption.
Category: Electrical       
Skills: Electronics, Circuit Design       
Preferred Location: India

v****gin
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| v****gin
|    India
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Jul 22, 2015  |  Ends: 13d, 3h  |   14 Proposals
Hi, I'm looking for someone to design and build a small prototype board for a round, small (ideally 30mm diameter or smaller), coin cell powered device. The device would be placed on a horizontal lid and in "sleep mode". When the lid opens, the circuit is activated and a clock is started. After 5 minutes the device would beep once per 30 seconds. After 10 minutes the device would beep once per 5 seconds. Beeping would continue until the lid is returned to its original state (horizontal). Device would then enter "sleep" mode. I found this schematic online which I think would be helpful as a starting point   [obscured]  /5748/timer-with-alarm/. My thought is that an accelerometer would be used rather than a tilt switch for better reliability and smaller size. Buzzer should be relatively audible from one room to another in a typical residence. Once board is designed/built I would create a clamshell housing for it. Thank you for considering.(ID: 7...
Category: Electrical       
Preferred Location: North America

D****pts
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| D****pts
|    United States
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