• ¥250元 simulink electrical engineering expert needed

    状态: 未托管 关注: 截止交稿时间: 2018-12-12

    fr(中文版)

    its low budget and long term project. if you are expert in simulink and electrical engineering, please bid here.

    技能: 电路设计, 电機工程, 电子, 工程, 矩阵及数学软件

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  • ¥20元 Build me a Digital Circuit in Logisim a

    状态: 未托管 关注: 截止交稿时间: 2018-12-12

    fr(中文版)

    Design a circuit in Logisim for the following simple vending coffee machine:

    It accepts only coins of the nominal 10 coin and 50 coin .

    There are two types of coffee, costing: 120 coin and 50 coin.

    You can order a coffee only when there is enough money (use LED to indicate that you can order one or another type).

    Once you order, all the money is used without returning any.

    技能: 电路设计, 电機工程, 电子, 工程, Verilog / VHDL

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  • ¥68元 Light Controlled Motor

    状态: 未托管 关注: 截止交稿时间: 2018-12-12

    fr(中文版)

    Design a motor controller based on the light level on a phototransistor. When illumination is very high, the motor will be stopped while 6 volts will be applied to the motor under low light conditions. You will need to measure (characterize) the properties of the phototransistor under both light and dark conditions in order to design the circuit and calculate component values. Be sure to justify all component VALUES and provide calculations for critical parts of your design. A table listing all components and briefly noting how values were derived is required. An op-amp is be used in the project along with a TIP-31 transistor. The circuit MUST function. Good parts layout along with the use of bypass capacitors will greatly increase the likelihood that the circuit meets all specifications.

    Provide an audio signal that is a function of the light level. Here, a 555 timer is to be used as a voltage controlled oscillator (VCO) that will generate a tone at a frequency of 500 Hz (+/-20%) at zero light level and 1500 Hz at full light (0 volts applied to motor). A small speaker or headset can be used to make the output audible and an oscilloscope can be used to verify the frequencies. One possible circuit is provided in the project data sheets folder ([login to view URL]) which can be used as a starting point.

    Design the motor driver hardware and Design the audio signal generator.

    MUST USE LTSPICE.

    DO NOT WRITE IN FIRST PERSON(I,WE,YOU ETC...)

    技能: 电路设计, 电機工程, 电子, 工程, 机械工程

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  • ¥50元 POWER BANK AND CHARGER DESIGN PCBBMS

    状态: 未托管 关注: 截止交稿时间: 2018-12-12

    fr(中文版)

    We are interested for electrical engineer for consulting and designing of PCB / BMS in a filed of Power banks and Chargers.

    技能: 电路设计, 电機工程, 电子, 印制板布局, 产品设计

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  • ¥140元 I would like to hire a PCB Layout Designer

    状态: 未托管 关注: 截止交稿时间: 2018-12-12

    fr(中文版)

    We are looking for a simple PCB design to send to a PCB manufacturer. Its just a simple connector board and I've listed the components needed as well as the power requirements. The PDF file should be 1:1 scale.

    技能: 电路设计, 电機工程, 电子, 印制板布局

    查看更多: pcb layout designer salary, audio pcb layout designer, pcb layout designer, freelance pcb layout designer, i want to hire a freelance graphic and layout designer uk, i would like to hire an it designer, pcb layout designer jobs, vacancies pcb layout designer, freelance pcb layout designer sao iose dos cakpos, i wanna hire a web designer, I would like to hire a photoshop designer, I would like to hire a Website Designer, I would like to hire a Graphic Designer , I would like to hire a presentation designer, i would like to hire a logo designer, I would like to hire a photoshop designer, I would like hire a solidworks designer, I would like to hire a Solidworks Designer, I would like to hire an AutoCAD Designer, pcb layout designer employment

  • ¥105元 Simple CMOS Project (Written Problems)

    状态: 未托管 关注: 截止交稿时间: 2018-12-12

    fr(中文版)

    Simple CMOS VLSI Design Project (Power, Sequential Timing, Logic Families, Wires & Memory)

    Look at the problems in: [login to view URL]

    WILL PAY GENEROUSLY. $$$

    Project Description is: [login to view URL]

    Reference Literature: CMOS VLSI Design

    Happy Bidding

    技能: 电路设计, 电機工程, 电子, 工程

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  • ¥50元 VLSI CMOS simple project urgent $50 2

    状态: 未托管 关注: 截止交稿时间: 2018-12-12

    fr(中文版)

    hi ineed vlsi cmos expert asap

    技能: 电路设计, 数字设计, 电機工程, 电子, Verilog / VHDL

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  • ¥30元 VLSI CMOS simple project urgent $50

    状态: 未托管 关注: 截止交稿时间: 2018-12-12

    fr(中文版)

    hi ineed vlsi cmos expert asap

    技能: 电路设计, 数字设计, 电機工程, 电子, 矩阵及数学软件

    查看更多: php mysql simple project database, simple project php, linked list simple project java, simple project vba using sql, simple project jsp servlet, simple project management script, possible simple project, simple project timekeeping program, simple project management php script, simple project marketing research, simple project web design, matlab simple project, mysql simple project, simple data entry project urgent

  • ¥20元 small adjusting pcb design PADS file ( replace connector footprint )

    状态: 未托管 关注: 截止交稿时间: 2018-12-11

    fr(中文版)

    ivery small job, just replacing a terminal connector from 6.5mm to 10.6 mm and send gerber files no new wiring or any other thing, shuld take few minuts work ... ( i dont have the software )

    attach the opads file and the new terminal ( 5 poles terminal block)

    技能: 电路设计, 印制板布局

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  • ¥20元 computational physics task using program called origin

    状态: 未托管 关注: 截止交稿时间: 2018-12-11

    fr(中文版)

    computational physics task using program called origin

    budget: 25$

    技能: 天体物理学, 电路设计, 电機工程, 工程, 印制板布局

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  • ¥140元 Realsense D430 and D4 board interconnection

    状态: 未托管 关注: 截止交稿时间: 2018-12-11

    fr(中文版)

    I have a Intel Realsense D430 depth camera and a D4 vision processor as individual parts. I need a PCB circuit design engineer to figure out the interconnection wires to make it a usable from a USB type C connection to the host PC.

    This will be a trivial job for the person with the right skills. Let me know if you are able to understand the schematics and suggest a solution.

    Refer to Section 7 system Integration of the data sheet for furhter details.

    技能: 电路设计, 电機工程, 电子, 微控制器, 印制板布局

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  • ¥38元 Wireless transmitter receiver for Foil and Epee Fencing

    状态: 未托管 关注: 截止交稿时间: 2018-12-11

    fr(中文版)

    I am looking for someone to assist in the design of a transmitter/receiver system for the sport of Fencing. (I believe it's crucial that the freelancer be someone who fences, or is very knowledgeable about fencing.) If you feel that this is a project you are capable of, and interested in, designing, let's discuss details.

    Currently, fencing is primarily an analog, wired sport. The foil and lame are connected to a bodycord, which is then connected to a reel which plays out behind the fencer as he moves back and forth across the strip. The reel is then connected to a scoring box, or a computer with scoring software. There are a few new wireless systems available (notably systems from EnPointe, Favero, Leon Paul, and HitMate.) But they are very expensive ($400-800), and seem to be designed to supplant the entire scoring system, or the reel, but do not eliminate the bodycord...which is one of the primary points of failure in fencing.

    I would like to design a simple, low cost 3 piece wireless kit that has a low profile wireless unit that plugs directly into the foil, a small wireless box that clips on to the lame for Foil fencing, and a receiver/control unit that plugs into the reel (or directly to the scoring box). Basically, eliminating the bodycord (and possibly reel). Ideally, the control unit would have a switch to select between foil and epee, and the wireless units would have a rechargeable battery with either contactless charging, or through the same prongs used to plug it into the foil/epee, with a small LED battery meter. The wireless unit that plugs into the weapon could be turned on and off by contact: plugging it into the weapon, rather than have a switch. The three units should be paired with a unique, unchangeable code, and the wireless stream would need to be encoded to eliminate interference (intentional or accidental) during tournaments.

    Since the current standard is simply a wire, with no circuitry, I cannot imagine that sending the simple on/off signal from the foil and lame would require intricate circuitry or processing. Actually, I think that allowing the current scoring boxes to do their jobs with timing and processing, by simply passing the current reading on to the scoring box would be the lowest cost, simplest solution, allowing clubs to integrate wireless fencing without the high cost of replacing entire scoring systems.

    For more information, I have found paper (written a decade ago) on a possible RFID-based wireless solution. I have attached a link to that paper, as well as a link to USA fencing's rule book, which details the voltages, amperages, weights, etc, for the wired signaling used in fencing. I have attached those links below.

    [login to view URL]

    [login to view URL]

    技能: 电路设计, 电機工程, 电子, 工程, 微控制器

  • ¥20元 PLC programming

    状态: 未托管 关注: 截止交稿时间: 2018-12-10

    fr(中文版)

    Pneumatic and Ladder Logic System programming

    技能: 电路设计, 微控制器, PLC 与 SCADA

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  • ¥500元 embedded trolley ID electronics

    状态: 未托管 关注: 截止交稿时间: 2018-12-10

    fr(中文版)

    HI ,

    I am looking for designing a electronic system which be used to identify the trolley connected to a truck .

    The truck and the trolley are connected through a 1 wire power line of 12 to 24 V( where peak voltage can reach upto 48V) . this power line is used to send the signal to the brake light .

    I want to install a transmitter in the trolley and a receiver in the truck head . The receiver should give the ID on a UART at 9600 Bauds .

    The product should draw power from the same line and transmit the ID of the trolley back on the line .

    I am looking for a wired solution , wireless solution is not suitable for my use case .

    The developer has to develop the schematic and the code .

    The deliverables are

    1. schematic

    2. gerber

    3. source code

    4. 2 working samples.

    技能: 电路设计, 电機工程, 电子, 微控制器, 印制板布局

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  • ¥20元 Cadence design

    状态: 未托管 关注: 截止交稿时间: 2018-12-10

    fr(中文版)

    Need help with understanding cadence layout design.

    技能: 电路设计, 电機工程, 电子, 工程, 印制板布局

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