Save this Search
     
Sort by:
  • Posted Date
Fixed Price
Fixed Price: Less than $500   |  Posted: 16h, 53m ago  |  Ends: 6d, 7h  |   3 Proposals
I need a program for an Arduino board so that it can generate 4 types of PWM. 1. Sinusoidal pulse width modulation - SPWM 2. Selected harmonic elimination - SHE PWM 3. Space Vector PWM - SVPWM 4. Hysteresis band current control PWM The user must be able to select the type of PWM that he wants and the frequency (1-200 Hz). The system is intented to work with a SINGLE-phase inverter. The Arduino board that will be selected will be anyone with an ATMega micropcessor. The final deliverable should be the arduino code files with extensive comment documentation.
Category: Electrical       

n****pas
 [?]
Sign in to view client's details.
| n****pas
|    Greece
Fixed Price: Less than $500   |  Posted: 19h, 47m ago  |  Ends: 14d, 4h  |   1 Proposal
I am looking for a maltab developer who can work on Stock prediction using ANN and other matlab toolboxes. Looking forward to build long term relationship. Budget- Below $300
Category: Electrical       

a****408
 [?]
Sign in to view client's details.
| a****408
|    India
Fixed Price: Less than $500   |  Posted: Apr 24, 2015  |  Ends: 13d, 16h  |   4 Proposals
In need of an electrical engineer to design a preamp for a dynamic microphone (using a DIY board off of EBay is fine, audio fidelity is not a major priority), as well as a volume control for a set of headphones. The project enclosure should have the following: 1. A 4-pin XLR connector for headset (2-wire mic, 2-wire headphone) 2. A 6-pin XLR connector for the following: a. 2-wire incoming audio from external source b. 2-wire outgoing audio to external source c. 2-wire for 12V DC 3. A volume dial for headphone volume control 4. A push-to-talk button to un-mute the mic 5. A beltclip 6. No external mic controls are needed. A set-and-forget it internal pot can be utilized. This is for a custom intercom beltpack with specific needs.
Category: Electrical       
Preferred Location: United States

S****red
 [?]
Sign in to view client's details.
| S****red
|    United States
Fixed Price: $500 - $1,000   |  Posted: Apr 24, 2015  |  Ends: 13d, 9h  |   32 Proposals
We need to have the layout done for a small USB 3.0 camera. The camera uses a Cypress CX3 and an Aptina image sensor. The entire camera has to fit on a PCB of 29mm * 29mm, where we need to leaf a space of 1.5mm around the perimeter. The 4 corners of the PCB have to be rounded with a radius of 3mm. - The schematics of the camera is available in Altium. - All the footprints are available. - An initial placement of the major components has been done to verify if the design fits. - The layout has to be done with a 12 layer PCB. - With drilled via from top layer to bottom layer - With drilled via from first inner layer to last inner layer - With laser via from top to first inner layer and bottom to last inner layer If you are interested then let me know, I can send you the schematics and the initial placement of components in PDF format or possibly in native Altium format. Best regards
Category: Electrical       

V****ign
 [?]
Sign in to view client's details.
| V****ign
|    Switzerland
Fixed Price: Not Sure   |  Posted: Apr 24, 2015  |  Ends: 13d, 9h  |   4 Proposals
I am after a crossover designer to help create a crossover for my loudspeaker design. It is a 3 way system and I have already designed the cabinet. I need some help designing a high end crossover to match the drivers and cabinet.
Category: Electrical       

A****rth
 [?]
Sign in to view client's details.
| A****rth
|    United Kingdom
Fixed Price: Less than $500   |  Posted: Apr 23, 2015  |  Ends: 12d, 19h  |   2 Proposals
Objectives: - To design a 6-bit binary to BCD converter. - To layout and perform physical verification on the 6-bit binary to BCD converter. EDA Software Required 1. Pyxis Design Manager 2. Design Architect (DA-IC) 3. ELDO 4. Ezwave 5. IC Station 6. Calibre
Category: Electrical       
Skills: Circuit Design, Semiconductor, VLSI       

1****88l
 [?]
Sign in to view client's details.
| 1****88l
|    Malaysia
Fixed Price: Less than $500   |  Posted: Apr 23, 2015  |  Ends: 12d, 19h  |   0 Proposals
Objectives: - To design a 6-bit binary to BCD converter. - To layout and perform physical verification on the 6-bit binary to BCD converter. EDA Software Required 1. Pyxis Design Manager 2. Design Architect (DA-IC) 3. ELDO 4. Ezwave 5. IC Station 6. Calibre
Category: Electrical       
Skills: Circuit Design, Semiconductor, VLSI       

1****88l
 [?]
Sign in to view client's details.
| 1****88l
|    Malaysia
Fixed Price: Less than $500   |  Posted: Apr 23, 2015  |  Ends: 12d, 19h  |   0 Proposals
Objectives: - To design a 6-bit binary to BCD converter. - To layout and perform physical verification on the 6-bit binary to BCD converter. EDA Software Required 1. Pyxis Design Manager 2. Design Architect (DA-IC) 3. ELDO 4. Ezwave 5. IC Station 6. Calibre
Category: Electrical       
Skills: Circuit Design, Semiconductor, VLSI       

1****88l
 [?]
Sign in to view client's details.
| 1****88l
|    Malaysia
Fixed Price: Not Sure   |  Posted: Apr 23, 2015  |  Ends: 12d, 18h  |   14 Proposals
We are looking for consultant that can help us do some fairly basic electronic design work. We have budget for this project and are ready to start immediately. Essentially we want to take an existing reference design for WiFi enabled smart plug (   [obscured]  /tool/TIDC-SMARTPLUG-WIFI ) and perform the following modifications: 1) We would like to have two (2) completely independently controlled and monitored egress power ports. Per the documentation, the relay, meterology and microcontroller per egress port is "scalable" so this looks to be a fairly simple task. We would ask for help both with the hardware design as well as the software modifications to be able to control/monitor the second port similar to the primary (note: I am linux software engineer with 20 years of experience, but I have never written hardware drivers). 2) We need to add an electronic or mechanical switch: the board will be housed in a lockable chassis, I just need some notification when the ch...
Category: Electrical       
Preferred Location: North America

k****oso
 [?]
Sign in to view client's details.
| k****oso
|    United States
Fixed Price: $500 - $1,000   |  Posted: Apr 23, 2015  |  Ends: 12d, 14h  |   5 Proposals
Need a circuit designed to mix three low-impedance microphone-level audio signals and provide line-level output. Must be low noise, and provide adequate headroom of transient signals at inputs. Op-amp circuitry preferred.
Category: Electrical       
Skills: Integrated Circuits, Electronics       

E****has
 [?]
Sign in to view client's details.
| E****has
|    United States
Fixed Price: Less than $500   |  Posted: Apr 23, 2015  |  Ends: 12d, 5h  |   12 Proposals
Need a hardware engineer to work with a Software engineer to build/fix a bluetooth circuit which would sit in between a Mobile device and a healthcare device to transfer data. Need a hardware engineer to work with a Software engineer to build/fix a bluetooth circuit which would sit in between a Mobile device and a healthcare device to transfer data.
Category: Electrical       
Skills: Electrical Engineering, Electronics       

s****IDI
 [?]
Sign in to view client's details.
| s****IDI
|    United States
Fixed Price: $500 - $1,000   |  Posted: Apr 23, 2015  |  Ends: 12d, 4h  |   10 Proposals
Design-Build capacitors, RLC circuits (resistor, inductor, capacitor circuits in series/parallel) to increase/decrease voltage (V) or decrease/increase current (I)to provide power supply to a new-facility, like a small house or office--in an experimental study. An experienced Electrical engineer (with BSEE) or a Physicist (with MSc) having hands on expertise in electrical circuit and/or EM microwave antenna circuit design/hardware to convert into electric current. It is preferable if the expert is in the US (between Baltimore, MD and Philadelphia, Pa.). .
Category: Electrical       
Preferred Location: United States

M****kki
 [?]
Sign in to view client's details.
| M****kki
|    United States
Fixed Price: $20 - $25   |  Posted: Apr 23, 2015  |  Ends: 12d, 2h  |   3 Proposals
A harmonic filter was built in simulink, all that is needed is the tuning of the pid and capacitor of the voltage source inverter which would allow for the source current to become sinusoidal. compensation currents and reference currents must not change, if pid is correct hysteresis should occur where both currents track each other in a hysteresis band. This is an easy job and requires only 1 hr of someone who has experience. I need this done asap, very quickly.
Category: Electrical       
Skills: Analog Electronics, MATLAB, Simulink       

i****ys4
 [?]
Sign in to view client's details.
| i****ys4
|    Trinidad And Tobago
Fixed Price: $1,000 - $5,000   |  Posted: Apr 23, 2015  |  Ends: 12d, 0h  |   17 Proposals
Hello, My name is John and I need someone who can create a heating pad and an electronic control unit to operate the device. The heating pad will fit inside a garment and the control unit will too. I want to look at a rechargeable battery and wall-powered configurations. Please contact me at your convenience. Best, John
Category: Electrical       

J****L73
 [?]
Sign in to view client's details.
| J****L73
|    United States
Fixed Price: Not Sure   |  Posted: Apr 22, 2015  |  Ends: 11d, 18h  |   9 Proposals
I need someone to design a quadcopter with an autopilot function. The autopilot needs to be a program that keeps the copter flying around a device connected by bluetooth (or an RFID tag), stabilize it if knocked, and land safely when the battery is low. The copter will be in a small 70mm in diameter "shell" that will be designed by another individual in conjunction with the development of the electronics. Along with the copter, I will need an RGB LED light that will change colors based upon the gyroscopic sensor, temperature sensor, and accelerameter. I would also like a microphone to be built in so the copter and LED can interact with music being played. I will need a prototype made and the ability to manufacture in the future.
Category: Electrical       

M****ski
 [?]
Sign in to view client's details.
| M****ski
|    United States
Fixed Price: $5,000 - $10,000   |  Posted: Apr 22, 2015  |  Ends: 26d, 10h  |   17 Proposals
PUSH is a Toronto-based wearables and sport technology startup that has developed a ground-breaking armband that can track and analyze strength training performance. Athletes at all levels struggle with these fundamental questions during training: How much should I lift and how many reps should I do? Making the wrong choice can lead to an increased risk of injury or, in the case of undertraining, wasting the athlete's time in the gym. PUSH has been working on solving this problem for the past two years, during which we've had the good fortune of attracting the attention of some of the world's best athletes and coaches. PUSH Bands are proudly being used in a number of elite training facilities as well as several NHL, NFL, MLB, NBA, EPL, & NCAA teams. Our team is currently looking to bring on an experienced Embedded Firmware Engineer with intermediate to extensive experience to us on a contract basis with continuous improvements to our hardware solution. Experience with the foll...
Category: Electrical       

T****USH
 [?]
Sign in to view client's details.
| T****USH
|    Canada
Fixed Price: $5,000 - $15,000   |  Posted: Apr 22, 2015  |  Ends: 22d, 7h  |   6 Proposals
We are a firm which is looking for UL certification consultant with specific expertise in organizing, pre-testing and providing hands on management of the UL certification process to completion for the US with a select product grouping including Low voltage, capacitive touch devices with LED backlighting and glass surface. Controllers for lighting and dimming control and HVAC control.
Category: Electrical       
Preferred Location: United States

P****dor
 [?]
Sign in to view client's details.
| P****dor
|    Canada
Fixed Price: $100 - $300   |  Posted: Apr 22, 2015  |  Ends: 1d, 22h  |   12 Proposals
We require a small form factor solution that satisfies the requirements listed below. We think Arduino or RaspberryPi might be the best solution, so that we can easily update code in the future, but are open to other suggestions. We will cover all parts and supplies costs. Unit must have the following hardware capabilities: - integrated speaker(s) capable of playing audio in a noisy home and still be heard. - 1/8" headphone output jack (internal speaker(s) are disabled when a device is plugged into this jack) - SD card or MicroSD card reader - built-in WiFi with ample power or antenna to provide sufficient range - power adapter connection option - user-replaceable battery powered option (we will need to determine best battery size to keep unit powered for an acceptable amount of time before battery needs replacing) Unit must have the following software capabilities: - Play audio WAV file from inserted SD card - RESTful API (read details below) The device will s...
Category: Electrical       

A****lin
 [?]
Sign in to view client's details.
| A****lin
|    United States
Fixed Price: Less than $500   |  Posted: Apr 21, 2015  |  Ends: 10d, 18h  |   5 Proposals
Objectives: - To design a 6-bit binary to BCD converter. - To layout and perform physical verification on the 6-bit binary to BCD converter. EDA Software Required 1. Pyxis Design Manager 2. Design Architect (DA-IC) 3. ELDO 4. Ezwave 5. IC Station 6. Calibre
Category: Electrical       
Skills: Circuit Design, Semiconductor, VLSI       

1****88l
 [?]
Sign in to view client's details.
| 1****88l
|    Malaysia
Fixed Price: Less than $500   |  Posted: Apr 21, 2015  |  Ends: 10d, 10h  |   18 Proposals
I'm looking at a pcb to try to make smaller. I'm not sure how much smaller you could actually get, but I'm not efficient at this and hope someone else can do it better than I. The layout of the connectors doesn't matter. There is little room to change parts. The connectors and RGD LED need to remain the same part number, but could possibly go to smaller resistors and caps to save space.
Category: Electrical       

V****rks
 [?]
Sign in to view client's details.
| V****rks
|    United States
Fixed Price: Not Sure   |  Posted: Apr 21, 2015  |  Ends: 10d, 7h  |   5 Proposals
I need help designing a touch panel module. I need to be able to have multiple touch features (touch panel buttons) and also have feedback display.
Category: Electrical       

A****rth
 [?]
Sign in to view client's details.
| A****rth
|    United Kingdom
Fixed Price: Not Sure   |  Posted: Apr 21, 2015  |  Ends: 25d, 4h  |   6 Proposals
Schematic program and prototype circuit to use zigbee to transmit messages using Atmel radio soc.
Category: Electrical       

m****apu
 [?]
Sign in to view client's details.
| m****apu
|    India
Fixed Price: Less than $500   |  Posted: Apr 20, 2015  |  Ends: 9d, 21h  |   20 Proposals
OVERVIEW I have a schematic diagram for a electronic stimulation system, meant for applying electric fields to different types of materials ranging from liquids to soils. The implementation is very simple, consisting of an 5V Arduino pro-mini module, with 3 different pin outputs going to a connector. Each output is different. One puts out 5V, another does 3V via a voltage divider, and the last one has a RC filter on one of the PWM ports. I also have 4 LEDs, 2 switches, a CdS light sensor and a power jack. I developed the schematic myself along with some help from some engineering mentors, but need help with validating portions of the design, namely the current buffer and ESD protection stages. I also need to make some minor changes to the board, e.g. Adding a push button. DESIGN When I prototyped the buffer output using a Npn current-follower, I couldn't see my source waveform showing up on my scope. Maybe I made a measuring mistake, but need validation from someone more ski...
Category: Electrical       
Skills: Electrical Engineering, PCB Design       

p****guy
 [?]
Sign in to view client's details.
| p****guy
|    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