Electronics Jobs

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Hourly - Entry Level ($) - Est. Time: Less than 1 month, Less than 10 hrs/week - Posted
. + BOM + Gerber files This device must have: 2 USB Inputs 1 MicroUSB Input (for charging) 1 AUX Input Bluetooth (as in a portable speaker) Small Microphone 2 Audio outputs (to be connected to 0,5-1 W micro speakers) Must be able to produce an small FM signal (to be captured by the car's radio or a small hand radio)(also must have a small electronic counter to show frequency being played) 5V Capable Battery !
Skills: Analog Electronics Electronic Design Embedded Systems PCB Design
Fixed-Price - Intermediate ($$) - Est. Budget: $200 - Posted
1. Log information from the charge controller to solar web. 2. Recharge from MasterCard and interface with the microcontroller for separate customer, Each customer already have a profile on our solar web, So after payment verified from Interswitch, command sent through solar base, after solar base confirm it, automatically the system can be switched for 1 day,2days...till 31 0r 30 days. 3. The microcontroller receive the command for a specific thing to do, Majorly turn the system for 1 days,2 days, 30 days etc. And the microcontroller send a command back to the solar web 4. A reset botton probably to get network or to refresh the system so that payment can be confirm. 5. The controller is connected to an output RELAY to turn the inverter on. 6. On the LCD display, Big to show information like payment count down, System ID,and status if active or not. 7. If Utility is detected log to the solar web and if the utility is off log it again.
Skills: Electronic Design ARM Embedded Systems
Fixed-Price - Expert ($$$) - Est. Budget: $7,000 - Posted
This project is to design an analogue circuit for an audio input ‘front end’ which is ultra-low-noise, low powered, high dynamic range to be used in measurement instrumentation for sound and vibration. The following basic specifications will apply • Analogue signal input • Minimum signal around 1µVolt • Maximum signals 3-5Volts • High Dynamic range (approx. 10dB up to 140dB) • Ultra-low-noise circuit design • On-board power supply design • Battery powered from 4 x AA cells • Possible requirement for signal conditioning (filtering) • Analogue to Digital conversion to maintain signal integrity • EMC compliance must be a consideration of this design • Low noise circuit board layout must be a consideration Following this stage of the design, there is a need for digital signal processing circuitry. This could be fulfilled by an independent contract or could be included in a single project depending on the skills of the contractor. • Fast-processing of ADC output (approx. 60kHz) • DSP for producing FFT, Octave and fractional octave filters and overall band limiting, ‘shaped’ filters • Micro-processor for system handling, user interface, results processing, FFT, Octave and fractional octave filters and overall band limiting, ‘shaped’ filters, time weightings, frequency weightings • Wi-Fi and Bluetooth connectivity • USB output
Skills: Electronic Design Digital Signal Processing
Hourly - Entry Level ($) - Est. Time: Less than 1 week, 10-30 hrs/week - Posted
Product: Ventilation fan for marine application. Speed adjustable via trimpot knob. Needed: Please design a compact circuit adequate for marine environment that will power 12v fan and can be adjusted via 10k Trimpot or similar. Details: A few fan manufactures allow adjusting fan speed via trimpot but I can't find stock. I've seen a few designs for PWM with 555 timers but circuit needs to fit inside the fan case and work with 12v. Heat dissipation should be minded as case is plastic. * Find 12VDC, 80mm x 80mm, IP68 fan. Perhaps something like: - http://www.digikey.com/product-detail/en/sunon-fans/GF80251B1-000U-SE9/259-1726-ND/5285623 * Use trimpot to adjust speed. Something like this one or in the same package: http://www.digikey.com/product-detail/en/bourns-inc/3386F-1-103LF/3386F-103LF-ND/1088491 Please supply: * Shopping list, preferable Digikey, ensure available stock. * Layman's circuit design.
Skills: Analog Electronics Electrical engineering Electronic Design
Fixed-Price - Expert ($$$) - Est. Budget: $600 - Posted
The overall goal is to create a safe hand-held system at minimal cost, having enough energy stored to heat a nichrome coil of about 0.9Ω for it to be red hot, for bursts of 10 seconds, around 50 times. Deliverables: Provide a functional unit, as well as a BOM, and schematics. The device is a battery powered heating coil The specifications: • The load circuit has a low impedance, of about 0.8 to 1.3 Ω, it is a small nichrome heating coil • Open circuit voltage output around 12 V/ The voltage output may not be constant due to the low resistance, and will rather have a wide range once connected to a load • Higher than normal power is needed between 10-30W • The battery would provide high currents to reach the required power rating, usually 1- 6A to heat the coil • Rechargeable battery has to be able to withstand low resistance
Skills: Electronic Design PCB Design
Fixed-Price - Expert ($$$) - Est. Budget: $6,000 - Posted
Development of a power supply for our modular controller system. Design will conform to our design standards and package requirements. High level design specifications: Input Voltage: AC(single or three phase)/DC, Min voltage 30VDC to 480VAC(678.72VDC) Outputs: Vout 1 24v 20 Amps, <80mv Peak-Peak ripple Vout 2 12v 20 Amps, <40mv Peak-Peak ripple Vout 3 5v 20 Amps, <40mv Peak-Peak ripple Current/Voltage monitoring on Input/Output voltages and Output voltage trimming through Ethernet control interface. Xilinx Artix FPGA (we can assist in the FPGA programming if needed, we have a default FPGA Circuit already designed ) with Ethernet and JTAG interface. Designs done in Altium Designer software with our component library (we have extra seats available if you do not have access to the software, if you are unfamiliar with the software you will need to familiarize yourself outside of the scope of the project). Please respond with a general outline of your proposed power supply design (block diagram is a bonus), why you are a good fit for this project, experience level with altium designer, projected timeline with milestones and cost. The individual awarded this job will have first access to our other contracts as they become available. Thank you.
Skills: Electronic Design Altium Designer Electrical engineering Embedded Systems
Hourly - Entry Level ($) - Est. Time: Less than 1 week, 10-30 hrs/week - Posted
Looking for an entry-level 3D designer that can copy existing 3D models of components into a new model that is optimal and that meets the functional requirements. You can use Solidworks, Autocad or another CAD program you have access to. Typical components: Arduino UNO R3 PCBA, Search and find models Design 2D and 3D layouts using pre-existing models from libraries Example Arduino UNO R3: model: https://3dwarehouse.sketchup.com/model.html?id=ue196c786-b17a-4745-93b9-63e032735744 that can be viewed with a viewer from http://www.sketchup.com/products/sketchup-viewer Relay PCBA. See: http://www.ebay.co.uk/itm/262304745422?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT Valve 1 see http://www.ebay.co.uk/itm/1-4-039-039-DC-12V-3-way-2-position-Pneumatic-Electric-Solenoid-Valve-NPT-Air-Aluminum-/291648665641?&_trksid=p2056016.m2518.l4276 Valve 2 see: http://www.ebay.co.uk/itm/12V-DC-1-4-034-2-Way-Normally-Closed-Pneumatic-Aluminum-Electric-Solenoid-Air-Valve-/391456931071?&_trksid=p2056016.m2518.l4276 Contactor must sign NDA All information about this job posted on UpWork etc must be approved first.
Skills: Electronic Design 2D Design 3D Modeling AutoCAD