Electrical Engineering Jobs

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Fixed-Price - Entry Level ($) - Est. Budget: $50 - Posted
In altium, layout a board. Overall, should be 100mm x 90mm. The 100mm board width is key parameter. length is slightly flexible. The board uses a Sparkfun brand Arduino Pro Micro - 5V/16MHz (P/N DEV-12640) to control a stepper motor driver, a piezo buzzer, and two relays (1. '510 relay,' controls a 30v buck; 2. 'valve relay,' controls a 12v solenoid valve), . board connections and key components: -stepper driver (no part number - not on board) - arduino D2, D3, D4 and GR should connect to STP/DIR/ENA/GR of stepper driver via 8-pin plug receptacle -510 relay (P/N G5NB-1A4-5VDC) - arduino D5+GR -valve relay (P/N G6L-1P 5VDC) - arduino D6+GR -piezo (P/N PT-3529PQ) - arduino D7+GR -8-pin plug receptacle (P/N 20020110-H081A01LF) connects 4X stepper driver leads (step, dir, ena, ground), 2X 12v solenoid valve power leads, and 2X 30v buck output power leads. ***plug receptacle should be centered on the board's 100mm axis and overhang the board edge by ~5mm.*** -4-pin screw terminal block (P/N 20020316-H041B01LF) connects 2X 12v power leads and +/- 30v power leads. please check attached gerbers for reference design. reference design was using an arduino uno. need this done in 24 hours or less. deliverables are schematic, altium/eagle files, gerbers.
Skills: Electrical engineering Altium Designer Arduino Circuit Design
Fixed-Price - Intermediate ($$) - Est. Budget: $350 - Posted
Hello. I need an experience 3d CAD designer to take my current design and get me to a working prototype of my product. Would need it to be completed so I can get it to a manufacture to produce the products for me with design and CADs provided The product is very similar to a small LED flash light that holds a 5mm through hole LED water clear LIGHT Attachment below shows the purpose of the LED LIGHT Holder. Which will operate just like a flash light.
Skills: Electrical engineering 3D Design 3D Printing AutoCAD
Fixed-Price - Intermediate ($$) - Est. Budget: $50 - Posted
1. A code that can read at least 2 analog signals separately, with no more than a few hundredths of a second delay. 2. A code that able to send an Analog Out (AO) signal as a synchronous 60Hz signal. This is for the control frequency of the Inverter when the grid is out, meaning a reference frequency is required. Can send out an AO simultaneously while the Arduino Mega is running through its code loop to monitor the system. The Mega is capable of that; of a 60Hz AO continuously. To top it all off that microprocessor will have to continuously communicate with the Mega, so it knows when to turn on that AO signal.
Skills: Electrical engineering Arduino Computer Engineering
Fixed-Price - Entry Level ($) - Est. Budget: $150 - Posted
DRAM Module Modification. Understand PC Chipset and DRAM addressing/configuration. Have a Sony Vaio PCG-U3 would like to upgrade RAM with 512MB module. Only 256MB modules available, custom modify module to 512MB. Will provide test unit for you to verify functionality.
Skills: Electrical engineering
Fixed-Price - Intermediate ($$) - Est. Budget: $7,000 - Posted
Looking for an experienced EE to design a PWM controller that can switch 24 channels of 5-24 volts with a maximum of 15 amps current for at least the first 4 channels and max 5 amps on the rest (15A max for all channels is preferable). Either way, a max of 40 amps total current. I have in mind that an LED controller chip would be used to provide the I2C interface and PWM control, and then connect that to FET's to switch it, but open to alternative design proposals. Intermediate deliverables will be regular progress updates and design review. Final deliverables shall be 2 tested & working assemblies plus all design and manufacturing files, preferably in Eagle CAD. Please provide a portfolio of past work upon application.
Skills: Electrical engineering Computer Engineering