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Hourly Rate: Not Sure   |  Duration: 1-3 months  |  Posted: Aug 27, 2015  |  Ends: 11d, 20h  |   3 Proposals
Looking for the Hi-Fi Engineer to design an Audio Hi-Fi VU meter with the Following requirements: 9.1 Independent Analog Input Channels, RCA, XLR, Banana, Etc 9.1 Vu Meters/leds ( 1 per input ) Can use a DSP for Functions Like: Input Level, Input Detect: Peak, RMS Dimmer Response Speed. Your Job here will be to design the Electronic Part using from the shelf Components, write code is a plus. NDA and Contract will be required, If interested please send your information for NDA. Project design Price to be determined
Category: CAD       

e****ico
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| e****ico *
|    United States
Fixed Price: Less than $500   |  Posted: Aug 14, 2015  |  Closed  |   13 Proposals
I need the electronic components designed for what will be a battery powered bluetooth speaker unit. I need everything to fit on a single PCB, as small as possible, 2 sided is fine. Specs: Battery Supply: 3.7V-5V Li-Ion rechargeable DC battery recharger Bluetooth v2.1 transceiver Class D amplifiers to power 4x1W 8ohm full range HIFI speakers -Need total of 4 Channels The board will need the highest quality products to ensure best Audio quality (was thinking TFA9887 amp by NXP). Will also need connection points/solder pads for leads to connect micro usb jack for charging purposes as well as for leads to connect an on/of switch.
Category: Electrical       

t****n15
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| t****n15
|    United States
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Aug 12, 2015  |  Closed  |   7 Proposals
I need a DSP specialist with at lease 5 successful projects review on fast signal analysis some knowedge of microwave /radar would be nice but not necessary I need some body who can can help us with the module You must have: 1) Experience with analogue signals in very low voltage such as 30 micro volts 2) Experience in noise reduction and filtering (such as notch filters, band pass, etc) 3) Must know how to use Spice and can simulate LM324 4) own HB100 module (can be bought for $7 from eBay) I cant use the limpkin design as it is filtering almost all useful data - I like to add a proper filter so I can measure speed (not just motion) of fast moving item from 30-50 centimeters (or 15") distance - speed can be from 30 miles/h to 200 m/h it is necessary to have good grasp of fast fourier transform and mathematics involved in processing frequencies, task is simple - hook up HB100 to a microprocessor (can be ARM Cortex) (use an A2D) (convert it to digital) analyze and mea...
Category: Electrical       

j****om1
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| j****om1
|    United States
Fixed Price: $500 - $1,000   |  Posted: Aug 11, 2015  |  Ends: 41d, 18h  |   9 Proposals
Hello, I am looking for some who can create a functional prototype of a Micro Headphone DAC/Amplifier for Iphone and android mobile ''samsung''. The DAC/Amplifier should be based on the AKM 4430 Audio DAC Chip. The DAC/Amplifier will not use a battery but will rather be powered by mobile device that it is connected to. The device should use official Iphone Lighting cable and Micro usb for the android/samsung mobile. The Purpose of the Device is to offer those who listen to music on their mobile devices a great HD Studio quality sound in a small well design compact and portable package. Please don't hesitate to ask any question. Design and dimensions for the prototype will be provided on request. Budget is negotiable so please don't be put off by it.
Category: Electrical       

a****ker
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| a****ker
|    United Kingdom
Fixed Price: $1,000 - $5,000   |  Posted: Aug 10, 2015  |  Closed  |   14 Proposals
This is for a total of (2) circuit boards to be designed and (5) prototypes of each, assembled and tested. This design is happening concurrently with the speaker cabinet design and will require collaboration unless one person / team bids both parts. The first board: - is approximately 3" square with a 7/8" hole in the center to clear the speaker magnet. The first circuit board shall contain: 1. An RF Receiver. 2. An approximately 2 Watt audio amplifier 3. A dual-pole audio filter to apply the proprietary sound curve (to be provided to the winning bidder). 4. Volume up and down buttons (brought to outside of cabinet, working with the cabinet designer). 5. Battery charging circuit for a battery capable of operating the speaker at a reasonable listening level for at least (4) hours on a single charge. 6. Designer to select the battery in cooperation with the cabinet designer to above specs. 7. Connectors for speaker, battery and external battery charger. 8. Provision to turn u...
Category: Electrical       

R****ham
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| R****ham
|    United States
Fixed Price: $200 or less   |  Posted: Aug 10, 2015  |  Closed  |   3 Proposals
Currently I am working on a project to improve walkie talkie headset quality. At the moment we are using a throat microphone headset, however the transponder(sensor) in the throat microphone is sensitive that it produces noise when there is movements while moving the neck or running. I wonder if you could use a bandpass filter/highpass filter connected to the headset to eliminate those noises and just let the desired voice signal to pass through. If this method could not work, you are welcome to provide any suggestions on how we can eliminate the unwanted scratchy noise produced from movements. Your help will be very much appreciated.
Category: Electrical       
Preferred Location: Australia

S****esh
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| S****esh
|    Australia
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Aug 09, 2015  |  Ends: 69d, 8h  |   4 Proposals
FM receiver: "Bracelet" (or a wristwatch) (alerting with sound, light ... vibrating,) - A FM receiver, like a FM radio. FM transmitter: "Keychain accessory" - A weak and limited FM transmitter sending a signal in a short distance, something like 200cm (2 meters) away at most. The bracelet will alert when LOSING and/or FINDING the signal of the receptor. I imagine that the biggest technical problem will be to synchronize two devices (Transmitter / Receiver) with the same free frequency ? And ? maybe it's necessary a kind of specific sound transmission in constantly loop. In a short distance the bracelet finds the signal... insofar as move away... stays mute or begins to have interference or begins to sizzle. When losing the specific beep, the bracelet triggers the alert. To keep even more as a necessary item in day-to-day... it may be interesting add this alert function in a new kind of digital clock by adding a schedule of commitments associated with creating ale...
Category: Electrical       

c****uiz
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| c****uiz
|    Brazil
Fixed Price: About $100   |  Posted: Jul 27, 2015  |  Closed  |   1 Proposal
It's a hiphop/rnb type of project on a budget so I need high quality reasonable price. Someone with a background in hip hop. If the work is top tier there will definitely be more business done.
Category: Other - Multimedia...       

A****e77
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| A****e77
|    United States
Hourly Rate: $10 - $25 / hr   |  Duration: 1-2 weeks  |  Posted: Jul 22, 2015  |  Closed  |   0 Proposals
Need pcb designer for RC car controller. Designer must good at pcb design in very small form factor with microcontroller, RF inside very small space. One version for mini RC car or quadcopter with micro motor Another version for regular RC car with regular motor.
Category: Electrical       

h****ai2
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| h****ai2
|    United States
Hourly Rate: $10 - $25 / hr   |  Duration: 1-2 weeks  |  Posted: Jul 22, 2015  |  Closed  |   1 Proposal
Need pcb designer for RC car controller. Designer must good at pcb design in very small form factor with microcontroller, RF inside very small space. One version for mini RC car or quadcopter with micro motor Another version for regular RC car with regular motor.
Category: Electrical       

h****ai2
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| h****ai2
|    United States
Fixed Price: Less than $500   |  Posted: Jul 19, 2015  |  Closed  |   2 Proposals
Hi People, I would like to obtain a quote to design and produce a 220-240VAC 50Hz to 115V AC 60Hz Pure Sine Wave Converter to suit a 15 watt electric motor. The device needs to withstand a Start current of 7 x FLC and have a duty cycle of 20 minutes on/10 minutes off. The device needs to plug into an Australian Power outlet via a flex lead and be equipped with a US plug to accept a US product plug. I would need the design, initially as a prototype in a test box. The design must then be able to go into production in a compact Moulded Plastic case. The case can be an "Off the Shelf" box if it looks professional. The design will need to meet all Australian and NZ standards including AU/NZ Approvals (RCM Electrical safety Mark, A-Tick, C-Tick, MEPS
Category: Electrical       

H****red
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| H****red
|    Australia
Hourly Rate: $15 - $20 / hr   |  Duration: 1-2 weeks  |  Posted: Jul 18, 2015  |  Closed  |   14 Proposals
It's a hiphop/rnb type of project on a budget so I need high quality reasonable price. Someone with a background in hip hop. If the work is top tier there will definitely be more business done.
Category: Other - Multimedia...       

A****e77
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| A****e77
|    United States
Fixed Price: Less than $500   |  Posted: Jul 18, 2015  |  Closed  |   14 Proposals
I need a PCB designed that includes a Bluetooth audio transceiver 3.0 or higher, 5v lithium ion battery charger, and dual 5 watt channel watt amp.
Category: Electrical       

t****n15
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| t****n15
|    United States
Fixed Price: Not Sure   |  Posted: Jul 17, 2015  |  Closed  |   11 Proposals
must have analog and digital hardware design skills pads circuit board and schematic capture important. outstanding interpersonal and communication skills knowledge of analog ics design fundamentals & semiconductor theory amplifier filter design good knowledge of analog layout
Category: Electrical       

d****dan
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| d****dan *
|    United States
Hourly Rate: Not Sure   |  Duration: Not Sure  |  Posted: Jul 16, 2015  |  Closed  |   4 Proposals
Creation of Autodesk infra-works model. Adding roads, buildings and trees. Draping an image onto the ground surface. Should only be a few hours initially but potential for more hours as design developes.
Category: 3D Modelling       
Skills: Amplifiers and Filters, Autodesk       

r****woz
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| r****woz
|    United States
Fixed Price: Less than $500   |  Posted: Jul 15, 2015  |  Closed  |   3 Proposals
I need a person to simulate CMOS, FGMOS, Quasi FGMOS based circuits on cadence tool- spectre for dc and ac analysis and to do analytical analysis of same circuits to find out various parameter expressions like transconductance, rin, rout etc. The circuits will be provided by me.
Category: Other - Engineering &...       

a****med
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| a****med
|    India
Fixed Price: Less than $500   |  Posted: Jul 15, 2015  |  Closed  |   2 Proposals
I need a person to simulate CMOS, FGMOS, Quasi FGMOS based circuits on cadence tool- spectre for dc and ac analysis and to do analytical analysis of same circuits to find out various parameter expressions like transconductance, rin, rout etc. The circuits will be provided by me. Payment can be hourly basis or fixed type as per your choice
Category: Other - Engineering &...       

a****med
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| a****med
|    India
Fixed Price: Less than $500   |  Posted: Jun 30, 2015  |  Closed  |   10 Proposals
I require a simple Psoc design (cypress chip), which includes: -filter -amplifier -automated gain controller -peak detector. More detail will be provided to negotiate the task at hand.
Category: Electrical       

****
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| Client
|    Australia
Fixed Price: Less than $500   |  Posted: Jun 19, 2015  |  Closed  |   4 Proposals
My intent is to mimic this transmitter but improve on it a bit   [obscured]  /2009/06/command-transmitter-by-dave-martin.html?m=1 It would be nice to have band modules by that i mean in the schematic above the band is changed by L6 - L7 and C13-16 this would be nice to be able to just changer out a module for the and i want and then the crystal to get me on frequency the idea is in a emergency situation i want to be able to broadcast a audio file from a device into the transmitter via the shortwave band(s) this transmitter must have a low pass filter so any out of transmitted band harmonics are filtered out this filter must be modular and be swapable inline with the tx so when i change frequency i can change filters as well Transmitter must be capable of producing a minimum 25w output Transmitter must be build on a pcb (no bread board no dead bug no perfboard) This project includes you building a physical working prototype This project includes you designing the ...
Category: Electrical       

w****eed
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| w****eed
|    Canada
Fixed Price: $500 - $1,000   |  Posted: Jun 18, 2015  |  Closed  |   0 Proposals
Project ACSR First part: SETTING UP Monitoring with BITSCOPE, RASPBERRY PI 2, SOFTWARE, STORING PICKED UP SIGNALS ON EEPROM OR MICRO SD CARD, PORTABILITY. Testing,Analyzing, picking up signals.then finding the signals to replicate.. (For dispensing) Second part: Testing, analyzing, pick-up signals if weak or shielding SIGNALS.Then needs amplifying of signals then.more testing... (For dispensing) First: MILESTONE RELEASED When ALL WORK IS fully completed and 100% satisfied by me. Noted:But? IF FIRST PART AND SECOND PART ''CAN NOT BE DONE''ONLY HALF OF THE FIRST MILESTONE WILL BE PAYED FOR THE WORK YOU DONE..PROJECT IS CANCELED IF FIRST PART AND SECOND PART IS COMPLETED AND WORKING WE GO TO PART THREE. YOU WILL BE PAYED THE FULL AMOUNT OF THE FIRST MILESTONE. Then we move on to next stage. Noted:Also? THIS IS THE SAME FOR PARTS THREE AND FINAL PART OF PROJECT. HALF OF MILESTONE PAYED FOR WORK DONE. PROJECT IS CANCELED. IF PART THREE AND THE FINAL PARTS TESTED AND 100% WORKING and ...
Category: Electrical       

c****ce2
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| c****ce2
|    United States
Fixed Price: About $100   |  Posted: Jun 16, 2015  |  Closed  |   2 Proposals
I need someone with good knowledge of electronics and GSM modems to help me find a good source of cheap GSM modems i can buy new and in bulk. Ideally you give two links to different brand and model together with price. Requirements: Has UART (they usually all have) Has required approvals for Europe (CE at least) Is below 4US when buying 1000-5000pcs. I know its out there. Provide vendor contact info and Model number In addition it may be useful to know that i really only need to send and receive SMS. No need to show SIM900 SIM800 as i checked those already and they are a little to expensive. I don't mind if its a full blown GSM Modem, but in reality i only need the SMS functions which in theory should drive the price down. So far i have been unlucky finding anything below 4US Thanks.
Category: Electrical       

****
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| Client
|    China
Fixed Price: Not Sure   |  Posted: Jun 15, 2015  |  Closed  |   9 Proposals
I am looking for someone to do PCB layout for a startup company. The board should contain eight transimpedance amplifiers, that can operate with high gain (1e8), high bandwidth (2e5 Hz acceptable, but prefer going up to 1e6 Hz), with low noise. These amplifiers would be used for applying a fixed voltage, and measuring small currents (less than 10 nA). To get an idea, a similar, acceptable layout can be found at:   [obscured]  /datasheets/1599345.pdf (though this board is for 1 amplifier, and not 8. Specifically looking for a board configured in transimpedance configuration, measuring current and applying a fixed voltage). Also, there are likely to be better opAmp packages that can be mutually agreed upon. These circuits are for high precision applications, so low leakage currents, low voltage drift, and low noise are all required. If possible, would also like to keep the size of the board to that of an Arduino header. If this is not possible, two boards of the Arduino size w...
Category: Electrical       

I****orp
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| I****orp
|    United States
Fixed Price: Less than $500   |  Posted: Jun 10, 2015  |  Closed  |   5 Proposals
design a switched capacitor integrator( i have transfer functions for sc integrator) need to implement sc circuits using state space representation method implement it in matlab and cadence
Category: Electrical       

s****k17
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| s****k17 *
|    Canada
Fixed Price: Less than $500   |  Posted: Jun 03, 2015  |  Closed  |   7 Proposals
Hello, i need to filter a mix signal with a digital filter and display the filtered signal on a glcd or tft. The signal contains 50Hz base signal and its harmonics. Plus a fault signal just below 50Hz so all frequency included 50Hz must be gone but a fault signal. Output signal will be written through adc and displayed. I do have a arduino due board which has ADC and DAC moduls on board. Can you design and port it for arduino due?
Category: Electrical       

o****779
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| o****779
|    Turkey
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