• ¥140元 Design hardware for hearing aids minus all the speaker components I would like a

    状态: 未托管 关注: 截止交稿时间: 2019-02-01

    fr(中文版)

    Design hardware for hearing aids, minus all the speaker components. The design will need to include a microphone, all audio conversion or amplifying components, but I already have the speakers with a + and - wire. The speakers are "8 Ohms Exciter Speaker 1W 300Hz ~ 19kHz Rectangular 90.1dB" and I already have them, but I would like a list of all necessary components, the code needed and how to build these all together. (PCB design skills, electrical engineering/hardware knowledge and coding knowledge are all needed). Preferably will show me how to assemble all the parts and code them all.

    技能: 电路设计, 编程, 电機工程, 电子, PCB Design and Layout

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  • ¥140元 PCB Design

    状态: 未托管 关注: 截止交稿时间: 2019-02-01

    fr(中文版)

    I need a circuit that can pulse charge low voltage and low amps to a set of super caps (multiple or single). The volts will be .3v >1.5v through a Joule thief (if you don't know what that is please google it)

    Work flow:

    low voltage input > joule thief > pulse circuit > super caps 2.7v 500f

    Why?

    I need some low amp batteries to completely drain to super caps but in a pulsing fashion.

    The batteries are 1.2v and will light an LED for 1 second with a capacitor but then the voltage dies to .4v under a load longer than a pulse but then recovers back to 1.2v and you can pulse again and this process can repeat for many cycles.

    I have attached the circuits. The files must be in a layered gerber file compatible with oshpark.

    技能: 电路设计, 电子, 印制板布局, 产品设计

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  • ¥140元 PCB and Proteus design

    状态: 未托管 关注: 截止交稿时间: 2019-02-01

    fr(中文版)

    Looking someone who have expertise in PCB design and proteus for various projects. There are time constraints as well which can be discussed. I am looking for someone who has experience in similar projects and role.

    Cheers

    Hannah

    技能: 电路设计, 电機工程, 电子, 工程, 印制板布局

    查看更多: various projects, pcb freelance design, various projects hospital management india, tina pcb software design, various projects site world, looking business partners outsourcing projects hourly rate, looking reliable writers editors projects come, people looking outbound call center projects, pcb design looking 2009, names cad projects including electronic pcb product design, looking good web designer various projects, proteus design, proteus design voltage stabilizer, proteus design keypad segment, proteus design seg display, design segment display proteus, proteus design segment display, looking for a project manager to assist with various projects

  • ¥140元 OrCad PCB (Cadence) minor modification

    状态: 未托管 关注: 截止交稿时间: 2019-01-31

    fr(中文版)

    I provide a PCB file (.brd) designed in OrCad PCB Designer Professional 17.2

    4-Layers PCB with planes.

    I need the following modifications:

    - CON2 Swap RS422TX+ (PIN3) with RS422TX- (PIN4)

    wanted configuration: PIN3 RS422TX- PIN4 RS422TX+

    - Remove the layer indicator (1234) and regenerate the affected pours.

    - Change the marking "PN: 08-28-0050-RC" to "PN: 08-28-0050xcvccxvvcvcxvxc"

    - Update the logo. (A new logo is provided in a gerber file).

    - Regenerate Gerber Files, drilling information, assembly information and SMT coordinates.

    - PCB files must be saved and provided in the same format (orcad PCB).

    技能: CAD/CAM, 电路设计, 电機工程, 电子, 印制板布局

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  • ¥7000元 Design a circuit

    状态: 未托管 关注: 截止交稿时间: 2019-01-31

    fr(中文版)

    I need a circuit designed for the arrangement of a fuel cell, battery, and a generator. I've 2 different articles on the circuit between a fuel cell and battery, for reference. the circuit needs to be derived from the same without overlapping completely.

    An agreement for payment will be signed and payment made only after verifying the design.

    TIA

    技能: Circuit Board Layout, 电路设计, 电機工程, 电子, 工程, 工程制图, Flex Circuit Design, Local Job, 机械工程

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  • ¥20元 Controller circuit to DC Brushed motor controlling speed and directions

    状态: 未托管 关注: 截止交稿时间: 2019-01-30

    fr(中文版)

    I got a DC motor

    I have DIP Switch of 4 which will enable 16 speeds (there will be 4 LEDs indicate the speed. the motor can move in two directions (there will be another 2 LEDs indicate the direction)

    I can use (expect the the basic elements) BJT, MOSFET and AMPLIFIERS.

    技能: 电路设计, 电機工程, 电子, 工程, 微控制器

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  • ¥1050元 Need circuit simulator for step up chopper circuit

    状态: 未托管 关注: 截止交稿时间: 2019-01-29

    fr(中文版)

    Hello,

    I have a circuit in Proteus. I want somebody it to simulate on a breadboard and make possible changes if needed. The circuit composed of a step up chopper using PIC18F4520 microcontroller PWM at a different duty cycle. The step-up voltage is from 3.7V to 19V, 18V, 17V etc

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

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  • ¥20元 I need a Circuit Designer with arduino knowledge

    状态: 未托管 关注: 截止交稿时间: 2019-01-29

    fr(中文版)

    I need help building the circuit part of my project. We have all the components needed. However we couldn't figure how to distribute the voltage without harming the components. Attached is a document specifying our components.

    技能: Arduino, 电路设计, 电機工程, 电子, 微控制器

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  • ¥140元 I need a Circuit Designer with arduino knowledge

    状态: 未托管 关注: 截止交稿时间: 2019-01-29

    fr(中文版)

    We are mechanical engineering students building a semi autonomous machine for our senior class. We need help building the circuit part of the project. We have all the components needed. However we couldn't figure how to distribute the voltage without harming the components. Attached is a document specifying our components.

    技能: Arduino, 电路设计, 电機工程, 电子, 微控制器

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  • ¥25000元 Develop a lift controller

    状态: 未托管 关注: 截止交稿时间: 2019-01-29

    fr(中文版)

    I need a design of a PIC microcontroller based lift controller pcb up to 10 floors. Including PCB design, programming.

    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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  • ¥140元 Water Softener Schematic 2

    状态: 未托管 关注: 截止交稿时间: 2019-01-29

    fr(中文版)

    Need a schematic with dual tanks, but isn't piped in individually, it's from one tank. I can make a mock up for you.

    技能: CAD/CAM, 电路设计, 电機工程, 电子, 印制板布局

  • ¥140元 edit in gerber files for hardware

    状态: 未托管 关注: 截止交稿时间: 2019-01-28

    fr(中文版)

    edit in Gerber files for hardware

    技能: CAD/CAM, 电路设计, 电機工程, 电子, 印制板布局

    查看更多: gerber files frequency meter, gerber files usb protocol, mcb2300 gerber files, olimex gerber files, freelance check gerber files errors, freelance generated gerber files, freelance jobs pcb check gerber files, olimex arm gerber files, sweden gerber files, gerber files, pcb gerber files, gerber files led driver, gerber files solidworks, gerber files altium, convert drawings gerber files, gerber files pcb project altium, convert gerber files model, avalon asic gerber files

  • ¥20元 SOLAR ENERGY

    状态: 未托管 关注: 截止交稿时间: 2019-01-28

    fr(中文版)

    SUN TO ELECTRICITY VS SUN TO HEAT:

    SCHEMATIC FROM SUN TO ELECTRICITY AND FROM SUN TO HEAT

    SYSTEM COMPONENT AND PARTS FOR BOTH

    MATHEMATICS OF CONVERSION FOR BOTH

    REFRENCES

    技能: 电路设计, 电機工程, 电子, 工程, 矩阵及数学软件

    查看更多: animation solar energy, solar energy flash banner, technical article solar energy, solar energy graphics, solar energy technical writer, free solar energy animations, solar energy articles, projects solar energy, animations solar energy, cad drawing solar energy box, home solar energy, solar energy logos clipart, animation solar energy conversion process

  • ¥140元 ECG based IOT enabled system

    状态: 未托管 关注: 截止交稿时间: 2019-01-27

    fr(中文版)

    Looking for a circuit designer who can make a ECG and IoT healthcare service

    this circuit collect ECG data and bind to the different users

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

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  • ¥11元 Looking for LongTerm Electronics Engineer to answer questions 2

    状态: 未托管 关注: 截止交稿时间: 2019-01-27

    fr(中文版)

    Hi all,

    I'm looking for a electronics engineer to answer questions that I have on projects that I am completing on a case by case basis. I'm looking for someone who can respond in a reasonable time and is able to answer a broad array of questions. I'll be looking to hire on a per 1 / 5 / 10 / 15 / 30 minute basis, depending on what the prefer of the engineer is.

    All the best,

    Trent

    技能: 电路设计, 电機工程, 电子, 工程, 机械工程

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