电路设计 工作与竞赛

If you want an end to end outsourcing solution for all your projects relating to circuit designing, outsource the work or job at the world's best marketing resource online Freelancer.com and get the work done by the expert circuit designer freelancers. These freelancers work online from all across the world and can be helpful to you and your project. Freelance them the work to be done either on part time or full time basis and be assured of an optimum result. The job sphere may include PCB designing, PCB board circuit debugging, layout, schematic designing, MCS including the software design and the hardware design.

The freelancer circuit designer will be able to work on the PCB print circuit, half finished product design, finished product and also assemble them. Their other work expertise are high speed telecom, RF board, DSP, microcontroller control, signal board, circuit design and assembling, electronic items designing like toy, motor, electronic gifts, main board, security defend, Vidicon, USB, DVD etc. If you are a freelancer having adequate skill and experience in circuit designing, Ethernet, USB, electronics, networking, digital and such related fields, submit your bid in the Freelancer.com and get posted immediately.

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项目/竞赛 描述 竞标数/参赛作品数 技能 已开始 结束 价格(CNY)
PCB Board and iOT device design for e-scooter =We are building an e-scooter sharing company with a mobile app and are looking to build and iOT device that will be attached to the scooter. The device will likely have network communication, GPS, and bluetooth. Some other details are as follows: * Our mobile app will set a locked/unlocked status for the scooter on the server, and the iOT device should be able to listen for the state change. ... 6 电子, 微控制器, 印制板布局, 产品设计, 电路设计 Jun 18, 2018 今天6天 22时 ¥870
Controller using Battery Power for Induction motor Design a controller which will drive induction motor (100 kw) off Battery bank with frequency up to 300 hz. The required voltage is 400 V, 300 hz. You are free to design Battery / Cell arrangement to get required output and also the type of battery use e.g. li-on or polymer or something better... 6 工程, 电子, 机械工程, 电機工程, 电路设计 Jun 18, 2018 今天6天 17时 ¥838
need an expert in motors electrical motors expert needed to work on some drivers 10 工程, 电子, 矩阵及数学软件, 电機工程, 电路设计 Jun 18, 2018 今天6天 14时 ¥115
电子, 微控制器, 电機工程, 印制板布局, 电路设计 Jun 18, 2018 今天13时 45分
Need a 3 Phase Inverter Designer Electrical Engineer 3 phase Inverter for [10hp] Motor 110V 60hz please only bid if you have experience in this field my budget is fix and i will provide details only to winner bidder so make sure you add + you experience and previous work details [related to VFD] dont forget to write proposal. thanks 10 电子, 微控制器, 电機工程, 印制板布局, 电路设计 Jun 18, 2018 今天6天 11时 ¥187
Ready-to-use Raspberry Pi image file (fast boot + emulator) Hi, I need a ready-to-use image file for Raspberry Pi Zero that will do the following: - fast-boot into a Sega Genesis emulator; - use buttons connected to GPIO pins as a game controller (4 directional buttons - up/down/left/right, and 8 functional buttons - a/b/c/x/y/z/start/mode); - no text/raspberry logos on boot; - show preloaded games list on start-up that lets you choose which game ROM to ... 6 工程, 电機工程, 电路设计, 编程, 树莓派 Jun 17, 2018 今天6天 ¥1780
Project for Bijan M. im making a PCB for ESP8266. i buy a lot of SP6201EM5-L-3-0/TR (Fixed Low Dropout Regulators(LDO) SOT-23-5 RoHS) Page: [login to view URL] I have other: LM1117MPX-ADJ (same but regulated). Page: [login to view URL] I wish use this for down voltage from 5v to 3v and i have questions about usage and wiring. and another questions and PCB making. Thanks 1 工程, 电子, 微控制器, 印制板布局, , 电路设计 Jun 17, 2018 Jun 17, 20188天 17时 ¥64
PCB Design, Analog Audio circuit expert, KiCAD to Eagle I'm looking for someone who is expert in PCB Design especially in Analog Audio circuit It's a simple circuit -Through hole converts to SMD -Reducing the noise of the circuit -KiCAD to Eagle I need someone professional who can improve the design I will provide you more details 24 电子, 微控制器, 电機工程, 印制板布局, 电路设计 Jun 17, 2018 Jun 17, 20185天 16时 ¥1090
Adapt PCB from Eagle to KiCAD and increase perfomance Adapt PCB from Eagle to KiCAD and increase performance from current 80A to 200A with peaks of 400A (specify heatsink for the design). Theoretically, used MOSFETs (FDMT80080DC, two in parallel) should be capable to handle 200A requested currents if they are cooled properly, but heatsink must be calculated. Also the Würth press-fit elements are already capable to handle 200A in theory. Probabl... 12 电子, 电機工程, 印制板布局, 电路设计 Jun 17, 2018 Jun 17, 20185天 15时 ¥1346
Help me to fix my ADC in VLSI project Hello, I have made a SAR 8 bits binairy coded ADC using method of 2 steps Successive Approximation, but it is a bit buggy. I need very experienced engineer in this field, otherwise it would just be loosing time. The simulation must be done in Cadence Virtuoso 6.x Thanks ! 0 工程, 电子, 电機工程, 电路设计 Jun 17, 2018 Jun 17, 20185天 13时 -
Drone Schematics/Files needed I need a copy of the Schematics and board files that was used for the 3DR Solo drone. If you have parts of the schematics (gimbal..... carrier board...ESCs) please let me know and a price to obtain them. For private use only. I may also be interested in the BOM file as well. 6 电子, 微控制器, 电機工程, 印制板布局, 电路设计 Jun 17, 2018 Jun 17, 20185天 1时 ¥2076
OBD2 with GPS/GPRS device OBd2 with GPRS/GPS device, firmware and demo webserver included 1 电子, 微控制器, 印制板布局, 电路设计 Jun 16, 2018 Jun 16, 20184天 20时 ¥1431
4 Channel IoT Based PCB Prototype Board Design and 2 Sample Design This project is based on Iot. We need a fresh pcb design which is unique and well tested with prototype. if any one interested on my project contact us .yes if you are not sure how you can or half knowledge , dont west time. 21 电子, 微控制器, 电機工程, 印制板布局, 电路设计 Jun 16, 2018 Jun 16, 20184天 16时 ¥257
Ardunio Project with GPS and SD card, PCB design. Project is to help me develop a board layout that connects a GPS and SD card modules directly to a ATMEGA328P. Then assist with the programming of the Arduino chip. This is a educational project for myself. I am looking to learn skills during the development process, so I would like to work closely, watch and ask questions. If you wish to work alone without questioning do not bid on this project.... 31 电子, 微控制器, 印制板布局, Arduino, 电路设计 Jun 16, 2018 Jun 16, 20184天 10时 ¥1128
Build a linux/windows based Simple Program - To Read /Erase/Write data off Smart ic Chip/emv chip card reprogrammed using SDK to Read Write EMV IC Card. HI THERE I NEED EMV CHIP BANK CARD WRITER /READER SOFTWARE THAT CAN BE USED WITH MSR 206 IC chip and magnetic stripe or any other similar reader card encoder reader writer new model of MSR I am in need of the software asap as my company currenty is havin g issues with employees and their id cards. We are using the emv chip data to check and see the employees whereabouts in the companies building... 3 C 编程, 电子, 微控制器, 电機工程, 电路设计 Jun 15, 2018 Jun 15, 20183天 14时 ¥922
电子, 微控制器, 电機工程, 印制板布局, 电路设计 Jun 14, 2018 Jun 14, 20182天 21时
Composite video to HDMI converter design (electronic design HW+SW) Dear Sir/Madam For unique project, we need to design our own composite to HDMI bridge converter. its going to be a part in a big electronic PCB, therefore we look for a design/drawings/layout cosiderations/software interface from someone who already did that or know that well. its a good "stand alone" task, so we found that fits to www.freelacer.com. it can be done by 2 parts digitize t... 5 电子, 微控制器, 电機工程, 印制板布局, 电路设计 Jun 14, 2018 Jun 14, 20182天 16时 ¥5422
Guiding and Designing GH60 Mechanical Keyboard Pcb I want to know how to create a gh60 mechanical keyboard PCB Professionally. and u have to create a design a gh60 pcb for me example [login to view URL] 5 电子, 电機工程, 印制板布局, 产品设计, 电路设计 Jun 14, 2018 Jun 14, 20182天 10时 ¥872
I will pay $10 just for an advice from a professional electronic engineer I just need an advice from a professional electronic engineer that he is able to program micro chips and so on. This advice can lead to a project. I am willing to pay $10 just for the advice. If the project will be proceed then we can discuss the price for that project. Regards, Steve 24 工程, 电子, 电機工程, 印制板布局, 电路设计 Jun 14, 2018 Jun 14, 20182天 1时 ¥103
PCB Revisions Our current PCB is designed to control four strings of addressable Leds over WiFi using a NodeMCU ESP8266 V2. Works well, but could be better with a few changes. --- Revisions --- - It uses a logic level shifter to connect the 3.3 V ESP data ports to 5 V Leds. We found that there are two sizes of shifters and it is difficult to know what you will get when ordering. A second set of pin holes 2.54... 27 电子, 微控制器, 电機工程, 印制板布局, 电路设计 Jun 13, 2018 Jun 13, 20181天 19时 ¥762
Power regulator/UPS and AV distributor circuit for Raspberry Pi I need a circuit designed for a Raspberry Pi that contains the following: Voltage regulator receiving +12V DC input and outputs +5V DC. The +5V DC will power a Raspberry Pi and should contain a UPS circuit using either battery power or capacitors (preferred). Upon +12V DC loss, the battery should power the Raspberry Pi for ~5 minutes and a signal should be sent to the Raspberry Pi over either an ... 14 电子, 微控制器, 电機工程, 印制板布局, 电路设计 Jun 13, 2018 Jun 13, 20181天 17时 ¥1264
Design the Electronics to control an image sensor The PONF Project ([login to view URL]) want to create a modular camera that bring together in a seamless, easy workflow photography and IoT. Ours is a (partially) Open Source project, and we hope to involve engineers that may want to help us making the whole camera. We are looking for an engineer that helps us design the electronics to control the Sony sensors to be connected to the Raspberry PI ... 16 电子, 电機工程, 印制板布局, 电路设计 Jun 13, 2018 Jun 13, 20181天 15时 ¥3641
电子, 微控制器, 电機工程, 印制板布局, 电路设计 Jun 13, 2018 Jun 13, 20181天 10时
Build me an NPK Sensor I am looking for someone expert in sensor technology. The proposed sensor(s) is/are to be able to measure the concentrations of Nitrogen, Potassium, and Phosphorous in wet soil. The sensor(s) should be able to be integrated into a. microcontroller. A specially skilled instrumentation engineer with experience in designing and building sensors is most appropriate. Further details can be shared on wa... 4 工程, 电子, 微控制器, 电機工程, 电路设计 Jun 13, 2018 Jun 13, 20181天 9时 ¥1406
Design and liaise with PCB manufacturer to develop an stand alone OCPP1.6 device that can be connected to a non OCPP compliant EV Charger. Design and liaise with PCB manufacturer to develop an stand alone OCPP1.6 device that can be connected to a non OCPP compliant EV Charger. The device will operate a relay that controls the power supply to a dumb )Non OCPP compliant) charger so it can be added to an OCPP server. The device will also measeure the delivered energy 8 电子, 电機工程, 印制板布局, 产品设计, 电路设计 Jun 12, 2018 Jun 12, 20181天 1时 ¥2530
Raspberry PI Compute Module 3 Simple IO Board I require a simple I/O board for the raspberry PI compute module 3, a full schematic must be provided. Please only bid if you have experiance with the compute module. Basic requirements 6 to 20V (or similar) input 4 x single USB 2x LAN 3x USB Power LED Reset button connected to GPIO Each USB port must be able to power high draw devices >500ma Dimesnions and basic layout will be provided to t... 17 电子, 微控制器, 电機工程, 印制板布局, 电路设计 Jun 12, 2018 Jun 12, 201815时 19分 ¥2818
(Basic Electrical Math Problem) From a circuit diagram of a trimorph piezoelectric energy harvester - calculate load impedance Estimate the load impedance require to maximise the output power at the fundamental resonant frequency. Use this load impedance to estimate the output voltage that can be harvester by this harvester. Note: You need to the model below and also determine the C, capacitance between electrodes. Also remember this is a trimorph. 15 工程, 电子, 电機工程, 数学, 电路设计 Jun 12, 2018 Jun 12, 201814时 9分 ¥129
dc input variable switching bench power supply regulator hello i have 12v 10a dc input source i need switching regulator, output 0-24v 0-5A pls do not give this bid from pakistan or india for more detail please contact with me 17 工程, 电子, 微控制器, 电機工程, 电路设计 Jun 12, 2018 Jun 12, 201812时 27分 ¥1483
Electric Vehicle Charger PCB Control Board with PLC and GSM Modem Integration over OCPP 1.6 Protocol Dear All, we are Renewable Based company, Now we are looking for support in Design and programme with Integration of Electric Vehicle Charger PLC with Ocpp 1.6 Protocol and GSM Modem. Kindly connect to me at underline details. Regards Dharampal 8 电子, 微控制器, 电機工程, 印制板布局, 电路设计 Jun 12, 2018 Jun 12, 20187时 57分 ¥1853
I would like to hire a Circuit Designer hi, i need someone to make for me a schematic and then a pcb so to order some pieces. I dont know how to make a schematic i only have a photo which shows what connects from ... to.... The job is simple to those who knows... draw a schematic and then give me the Gerber Files so i can order the pcb's. 23 电路设计 Jun 12, 2018 Jun 12, 20183时 50分 ¥322
电子, 微控制器, 电機工程, 印制板布局, 电路设计 Jun 11, 2018 Jun 11, 20181时 27分
Electronics and microcontroller expert_ I need a Electronics and microcontroller expert for my current project. If you have knowledge please bid. Details will be shared in message with the selected freelancers. 56 工程, 电子, 微控制器, 电機工程, 电路设计 Jun 5, 2018 Jun 5, 20184天 23时 ¥976
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