You've landed at the right place. oDesk is now Upwork. Learn about the new platform.

Electrical Engineering Jobs

88 were found based on your criteria

show all
show all
only
only
only
show all
only
only
only
only
only
show all
only
only
only

Hourly - Est. Time: Less than 1 month, Less than 10 hrs/week - Posted
Hi, I'm looking for someone to a design a Wheel and motor assembly, that can be retro fitted to any 2 wheel golf cart, to make it a 3 wheel golf cart Note: The third Wheel will need the motor inside the wheel A clamp assembly to retro fix the wheel to the existing trolleys A remote controller to control the motor The wheel that needs an inbuilt motor and a light weight battery. The motor does not need to be too powerful, as it assist the user.

Hourly - Est. Time: Less than 1 month, Less than 10 hrs/week - Posted
Please forgive if I am not using the correct terms. In the block where I live, we have a communal boiler. I have a hot water cylinder in my apartment which works by heat exchange. Sometimes the communal boiler fails or may even function at a lower than acceptable temperature. I need some sort of monitoring device which we will set to a certain temperature and this will be attached to the flow from boiler pipe (see photo) and if the temperature drops below our set temperature, then it should set the programmer to OFF this way it isolates my water tank from the main boiler. Taking it a step further, it should also turn on the immersions on the tank so that the heat in cylinder is retained and the appartment remains warm. When the temperature returns back to normal, it should automatically turn off the immersions and switch the programmer back on. The immersions are up to 4kw each and there are two of them.

Fixed-Price - Est. Budget: $ 250 Posted
I have a project that could use some professional expertise. I'm using the nrf51 (nrf51822) development board and have built a simple bluetooth app that sends the four buttons to a characteristics through notifications. I want somebody experienced with the nrf51 to go over my code and help me fix these four bugs: - the app will freeze at startup and the buttons do not register in the RTT log - pstorage is not being written to correctly - peripheral is not connecting to server when in slow advertisement mode (fast advertisement mode works fine) - ensure minimal current consumption The app is written and mostly works, I just need a professional to come in and verify that I'm doing everything correctly. Thanks! Sam

Fixed-Price - Est. Budget: $ 15 Posted
Hello, Please visit these 2 URLs. 1) http://www.instructables.com/id/ARDUINO-ENERGY-METER/ 2) http://www.homemade-circuits.com/2013/03/simple-dc-ups-circuit-for-modemrouter.html Your job is to mix these 2 circuits. Changes you have to make: For link 1: use arduino nano instead of arduino uno. I dont want to use ethernet shield. All the values have to be put in csv file and sent through usb port to computer. For link 2: You need to optimize this circuit to 12V/5amp DC from solar panel input(controller will be present). Now the arduino nano present in link 1 have to measure the voltage,amp and wh for link 2 circuit: i) electricity used to charge the battery ii) electricity supply in case of power failure from mains (No solar input) iii) electricity supply directly to modem (from solar controller to modem) The link 1 meter should send the values of these 3 cases in every 1 sec. You need to send me all the required parts (in detail with the part number), arduino...

Hourly - Est. Time: Less than 1 month, 10-30 hrs/week - Posted
I have embarked on a robotic TIG welding project, and I need help to develop a programmable power supply for the machine. I am no electrical engineer, but believe that I need a high-frequency IGBT-based inverter capable of approximating the performance of the Miller Maxstar 280 or Lincoln Electric Invertec V270-TP power supplies: - Input voltage: 415 V - Input: 20 A - Phase: 3 - Output mode: CC - Output range: 5 – 270 A - Output duty cycle: 100% at 170 A - High frequency arc start It is imperative that the power supply must be able to respond to commands from the welding machine to control the output current in the same manner as possible with either the Maxstar or Invertec units. That is, it must be capable of producing a current with a controllable ‘upstroke’, ‘pulse’, and ‘downstroke’. As I said; I do not come from an electrical background and require guidance on how to specify and design this power supply to bring my project into fruition. At this stage I am essentially...

Hourly - Est. Time: 1 to 3 months, Less than 10 hrs/week - Posted
I would like best suggestions on how to "tap into" and read the magnetic flux transitions stored in 35-year-old QIC tapes. I've started with period-correct and fully-functioning reading hardware: The Wangtek 5099. The goal will be to create a modern interface device that connects to the Wangtek 5099, and functions much like David Gesswein's MFM Emulator, the Kryoflux, and the SuperCard Pro do for hard disks and floppy disks of the same time period. All of these modern devices will read the raw magnetic flux transitions from the magnetic media. Schematics and detailed pictures of the circuit boards for the Wangtek 5099 can be found on this page: http://bit.ly/1D8KfrM For reference on the existing modern devices I list above for comparison: MFM Emulator = http://www.pdp8online.com/mfm/mfm.shtml Kryoflux = http://www.kryoflux.com/ SuperCard Pro = http://www.cbmstuff.com/proddetail.php?prod=SCP If you are interested in this challenging opportunity, please make your bid....