电子 工作与竞赛

Electronics is the branch of science and technology that makes use of the motion of electrons for accomplishing some tasks like information handling or device control. If your business is about electronics engineering and electronic circuits, then you will not have much time to focus on engineering aspect of your business. You can easily outsource electronics engineering to capable and willing freelancers as a matter of routine. Post a job today to find your electronics talented freelancer!
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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(HKD)
Mechanical Bot - Tapper for Iphone/Android I want you to create a mechanical tapper for an iphone and android that taps for you. It can be a replica of the Flex Bot 6. 3 电子, 机械工程, 电機工程, 电工 Oct 21, 2017 今天6天 23时 $1174
Engineering Project Hi, Please see attached the project requirements. Need step by step and detailed solutions in 24 hours 4 电子, 电機工程, 通讯工程 Oct 21, 2017 今天6天 21时 $460
Motion Simulator redesign Project Hi All, I require someone to help redesign the first prototype which has been completed into the next version. The initial work will involve modifying the current design with a new top yaw section. 99% of new design elements required have been found, just need an experienced mechanical engineer to look at the design and make it all work together. Assessing the COG, stability plan out how to at... 2 工程, 电子, 机械工程, 电機工程, 印制板布局 Oct 20, 2017 今天6天 15时 $226
Electrical Power Engineering Kindly find below two parts to be solved: Problem 1 Two single-phase transformers are connected open-Y open-Δ to provide power for a three-phase Y-connected 100-kVA load with a 0.80 lagging power factor and a 50-kVA single-phase load with a 0.90 lagging power factor, as shown in Figure 1. Assume that the primary-side voltage of the bank is 7620/13,200 V and the secondary-side voltage is ... 10 电子, 微控制器, 电機工程, 电路设计 Oct 20, 2017 今天6天 13时 $273
High current Solid state relay Aurdino control current with high load by arduino 3 电子, 矩阵及数学软件, 微控制器, 电機工程, Arduino Oct 20, 2017 今天6天 13时 $1701
Umpire Indicator I would like to manufacture an electronic umpire ball/strike/out indicator. I can provide specifics on electronic operation, logic and physical size and shape. 3 电子, 机械工程 Oct 20, 2017 今天6天 11时 $1186
Design PCB ArtWork 5" by 5" 4 Layers Altium Designer PCB files are required All the details will be shared with the bidder. 12 电子, CAD/CAM, 电機工程, 印制板布局, 电路设计 Oct 20, 2017 今天6天 7时 $257
Matlab/Simulink simulation (lorawan) Multiple gateways (lorawan) and thousands of nodes(lorawan) simulation. 4 工程, 电子, 矩阵及数学软件, 算法, 电機工程 Oct 20, 2017 今天6天 7时 $184
I would like to hire a Data Entry Clerk My project is titled as Rescue and protection for coalminers using Arduino and wireless technology. The main objective to take up this project is to save lives of miners by detecting abnormal environmental conditions underground and take necessary steps to save their lives. In my project, I have used three different kind of sensors which are as follows; [链接已删除,请登录查看] and Humidity sensor [链接已删除,请登录... 1 电子, 微控制器, Arduino Oct 20, 2017 今天6天 7时 $1600
Logisim Software Tasks Hi I need someone who is good with Logisim Software to complete some tasks. 7 工程, 电子, Verilog / VHDL, 电機工程 Oct 20, 2017 今天6天 6时 $211
SYNCHRONOUS INDUCTION MOTORS in Electrical machines. I need a electrical engineer with adequate knowledge and skills to write a report in the topic SYNCHRONOUS INDUCTION MOTORS addressing specific issues that I will provide. The report will be backed up by adequate research and knowledge on various issues among them the phasor diagrams. Should be willing to work on the task and deliver in 2 days. 11 工程, 电子, 技术写作, 报告写作, 电機工程 Oct 20, 2017 今天6天 4时 $185
Gnu Radio Flowgraph I need flowgraph in gnu radio companion which does the following: (1) Generate the phase difference of sine wave and send out the two sine waves and the phase difference of the two waves simultaneously with using only of a single HACKRF. (2) Receive the above sine waves and generate the phase difference of the received waves. Then take the difference of the phase difference at the sent-point... 7 Python, 数据处理, 无线, 电子, 编程 Oct 20, 2017 今天6天 4时 $3597
gsm sms alarm arduino project my project for use electrical db board,pump station,industrial alarm system and secure places. that places got breakdown,overlord or eny situation changing send to text sms for meany maintain or management people more then 20 (ex; pump station water level high pump fail) like that 25 C 编程, 电子, 微控制器, 电機工程, Arduino Oct 20, 2017 今天6天 4时 $1719
STM32 motor control project template - repost due to my own inactivity Hey guys, I started using STM32 motor workbench and FOC SDK v4.3, and the code is a bit more complex than what I'm used to. For that reason, I need someone experienced in STM32 FOC library, to create some functions that are easier to use for a part time coder. Project description as follows The target of this project is to design a template using STM32 FOC SDK v4.3. This template shall h... 7 C 编程, 电子, 微控制器, C++编程, Arduino Oct 20, 2017 今天6天 1时 $4138
C 编程, 电子, 微控制器, C++编程, Arduino Oct 20, 2017 今天6天
3Sides motion controller i need a portable device connectable to android device by wireless and otg with an dedicated app the most of the project is software based the final should be like leapmotion but for a single purpose 4 C 编程, 电子, C++编程, Android Wear软件开发工具包 Oct 20, 2017 Oct 20, 20175天 23时 $22958
Help required in power systems analysis with knowledge of Multisim software and Matlab software I need someone to help me in some questions related to power systems. You should have knowledge about concepts like Power triangles, Power factor, Balanced & Unbalanced - 3 - phase sources, Balanced & Unbalanced - 3 - phase loads, Symmetrical components, Faults, Per Unit analysis, Bundling of conductors, ABCD parameters, Voltage Regulation, Efficiency, Balanced & Unbalanced - 3 - phas... 14 工程, 电子, 矩阵及数学软件, 软件测试, 电機工程 Oct 20, 2017 Oct 20, 20175天 23时 $1049
Three Phase transformer design and some calculation 3 phase transformer, output 80volts/500Amperes, other type 15volts/5000Amperes 22 电子, 电子表格, 电機工程, 电路设计, 电工 Oct 20, 2017 Oct 20, 20175天 23时 $54235
Wireless, Telecommunication, researchers required. Wireless, Telecommunication, researchers required. . I am looking for some people who can be very good in one of the following research area. . Sensor network localization . Physical and MAC layer protocols, low power link layer technologies (PLC and wireless) · Resource management and cross-layer optimization · Multi-hop communication and mesh networking · Scalable ne... 11 无线, 电子, 电機工程, 通讯工程, 网络管理 Oct 19, 2017 Oct 19, 20175天 16时 $1077
Programmabe Electronic load A simple mosfet based programmable electronic load. 5 V max and 20 A max. Should be programmable using arduino with best possible resolution. 16 C 编程, 电子, 微控制器, 电機工程, Arduino Oct 19, 2017 Oct 19, 20175天 13时 $892
heart and respiration sensor I’m looking at a heart rate and respiration rate monitor with connection to a smartphone (bluetooth?) in one unit. I know there are pulse oximeter units that can be placed on the finger to get heart rate, but to my knowledge you can’t get respiration rate at the finger with one of those. I have been thinking of a small unit attached to a necklace that would rest mid sternal level on th... 16 电子, 微控制器, 电機工程, 产品设计, Arduino Oct 19, 2017 Oct 19, 20175天 12时 $6328
Design electrical wiring for a portable dryer according to EU and USA legislation -- 2 We need an electrical engineer with experience in designing circuits and wiring for home appliances. In essence our circuit is very simple: we need to connect a 110 / 220v propeller (which needs a condenser to startup) with a 1000W resistance which includes a thermostat and 2 sub-circuits: one 100W and the other one 900W, that are activated with a switch. It is crucial to have demonstrable e... 9 电子, 电機工程, 电路设计, 电工 Oct 19, 2017 Oct 19, 20175天 12时 $4356
English hardware guide on Arduino to be corrected and improved I wrote a guide in English about on the Arduino microcontroller, which is about hardware and electronics. I would like that this guide is corrected and improved by someone who masters the English language in order to correct possible errors and make it more readable and fluent. There are about 18900 words, but including many text sections with math formulas not to be translated (I guess 10% of t... 22 翻译, 电子, Arduino, 英语(英国), 英语(美国) Oct 19, 2017 Oct 19, 20175天 11时 $1085
PCB Board design for PyCom FiPy We are needing a main board designed for a FiPy board from pycom to expose some headers for easy attachment as well as add a power source and connection to the board. The following connectors are needed: Connections +34vdc MDB 6 pin molex connector(Figure 1) JST connector for LiPo battery Serial connection MDB to pycom(Figure 1) Serial connector Pinout Molex MicroFit(6 pin) Dual row 14 pin... 8 电子, 微控制器, 电機工程, 印制板布局, 电路设计 Oct 19, 2017 Oct 19, 20175天 11时 $2583
Machine Design I want to wrap Block with butter paper as can be seen in picture attached. I want machine in 3D design, Electrical diagrams, Assembly diagrams, Part list, and other stuff related related to control like PLC programming etc . Attached picture is the idea developed by me. feel free to ask anything. 18 工程, 电子, PLC 与 SCADA, 机电一体化, 3D建模 Oct 19, 2017 Oct 19, 20175天 11时 $1326
Need a person who can do boolean algebra he compiler should produce a listing of the program with lexical error messages included after the line in which they occur. Any character that cannot start any token should be considered a lexical error. An example of compilation listing output is shown below: 1 -- Program with two lexical errors 2 3 function main a: integer returns integer; 4 b: integer is a * 2; 5 begin 6 if a <= 0 t... 3 工程, 电子, 电機工程, 通讯工程, Computer Science Oct 19, 2017 Oct 19, 20175天 9时 $40
writing the lexical analyzer with lexical error checking, and the compilation listing generator for the compiler Need someone who can do boolean algebra programming 1 工程, 电子, 电機工程, 通讯工程, Computer Science Oct 19, 2017 Oct 19, 20175天 9时 $33
Ziegler-Nichols PID Ziegler-Nichols PID tuning and tuning preserving actuators 13 工程, 电子, 矩阵及数学软件, 机械工程, 电機工程 Oct 19, 2017 Oct 19, 20175天 8时 $1085
make a virtual button for arduino Hello, i need to make a virtual button for running arduino continous servo Device i use : 1. continuous servo rotation 2. arduino uno 3. board 4. windows pc i need to make virtual button from vb6 that makes run a specific continous servo. so i need you to help me program the vb and arduino 18 C 编程, 电子, 软件构架, LabVIEW, Arduino Oct 19, 2017 Oct 19, 20175天 6时 $343
weighing aurdino measurement unit I am looking for small aurdino based measuring unit [链接已删除,请登录查看] could be very simple with just the connections between components namely,kitchen digital weighing scale and aurdino with output readings on [链接已删除,请登录查看] I am trying this forum first time and frequently require such [链接已删除,请登录查看] looking for something quick. 11 电子, 嵌入式软件, Arduino, 电路设计 Oct 19, 2017 Oct 19, 20175天 5时 $341
PIC32MX795F512L TCP/IP Bootloader Hi, I need a bootloader for PIC32MX795F512L Microcontroller. I already have an application, and I want to be able to remotely update it. Candidates must ask the following questions in order to be considered: Do you have some similar solution already working? What is your experience working with boot loaders? Have you worked before with PIC32MX Bootloaders? Have you developed before a T... 5 电子, 微控制器, 电機工程 Oct 19, 2017 Oct 19, 20175天 5时 $1673
Hire a robotics engineer for the design of a Logistics Agv. We are developing an automatic guided vehicle for logistics industry with positioning and lifting ability. The movement is based on differential kinematics. 11 电子, 机械工程, 机器人技术, 软件开发 Oct 19, 2017 Oct 19, 20175天 4时 $197027
Need to hire Someone Clover Hardware Expert I am looking forward to find someone who has experience of communication between clover mobile and android tablets. Please apply if you have built it or have experienced. 20 无线, 电子, Mobile App Development, 安卓, 电機工程 Oct 19, 2017 Oct 19, 20175天 3时 $19116
ESP8266 WiFi based simple WWW server with UART data acquisition. Preferable NodeMCU based. Hardware platform: ESP8266EX with external 128mbit flash 25Q128F Winbond chip for program and data storage. Preferably based of some commonly available ready-made module PCB for start, transferable to our own ESP8266EX PCB solution later. Software platform: NodeMCU preferred (or other open IDE/SDK) but we are open for any reasonable suggestions that do the job, including paid/licensed c... 2 电子, 微控制器, Oct 19, 2017 Oct 19, 2017已经结束 $24297
VHDL Radio Clock + python script Need help in VHDL everything is mentioned on the PDF 6 电子, Verilog / VHDL, 软件测试, 电機工程, FPGA Oct 19, 2017 Oct 19, 20175天 $556
Simulation of Solar Streetlight powered by Solar Tracker is the most feasible Hi, Does anyone can give me the simulation/ software-analysis why solar-tracking street light is better compared to normal streetlight and normal solar power street light? Any software like HOMER or Matlab or anything is welcome. I expect power gain is higher due to more contact with sun.. I need it in next 48 hours.. 9 工程, 电子, 矩阵及数学软件, 算法, 电機工程 Oct 19, 2017 Oct 19, 20174天 23时 $225
design a gps that interfaces with a micro controller and blue tooth design a gps that interfaces with a micro controller and blue tooth transmitter that interfaces with a mobile app 30 平面设计, 电子, Mobile App Development, 安卓, 用户接口 / IA Oct 18, 2017 Oct 18, 20174天 18时 $3691
Design electrical wiring for a portable dryer according to EU and USA legislation We need an electrical engineer with experience in designing circuits and wiring for home appliances. In essence our circuit is very simple: we need to connect a 110 / 220v propeller (which needs a condenser to startup) with a 1000W resistance which includes a thermostat and 2 sub-circuits: one 100W and the other one 900W, that are activated with a switch. It is crucial to have demonstrable e... 5 电子, 电機工程, 电路设计, 电工 Oct 18, 2017 Oct 18, 20174天 14时 $1519
Need help in simulation(MATLAB) based project"Analysis of power system parameters for islanding detection using wavelet transform." -- 2 Need help in simulation(MATLAB) based project"Analysis of power system parameters for islanding detection using wavelet transform." 15 电子, 矩阵及数学软件, 算法, 电機工程 Oct 18, 2017 Oct 18, 20174天 12时 $1334
Need help in simulation(MATLAB) based project"Analysis of power system parameters for islanding detection using wavelet transform." Need help in simulation(MATLAB) based project"Analysis of power system parameters for islanding detection using wavelet transform." 15 电子, 矩阵及数学软件, 算法, 电機工程 Oct 18, 2017 Oct 18, 20174天 11时 $4096
systeme Taxis - 18/10/2017 15:45 EDT need to create a system of taxi like UBER App with a small difference A-the systéme included an device into the taxis (with screen touch like in the picture not a phone or tablet ) ! A-a device show 3 counter of taxi in screen touch for get request of client and show the traject betwin taxi and client A-b device Included small printer of ticket taxi A-c device Included 6 push bu... 17 电子, 安卓, 大数据, 树莓派, iOS Development Oct 18, 2017 Oct 18, 20174天 11时 $20731
Altium layout design Make layout design from the schematic. Required Knowledge in Altium design. 39 电子, CAD/CAM, 电機工程, 印制板布局, 电路设计 Oct 18, 2017 Oct 18, 20174天 10时 $118
Electronic I want to find talent electric engineer someone has bluetooth and wi-fi technology 14 工程, 电子, 电機工程, 低功耗蓝牙(BLE) Oct 18, 2017 Oct 18, 20174天 8时 $1444
Arduino Nano + DHT22 + LowPower Hi, I am new in working with Arduino and I need immediately help - first only to integrate the DHT22 Sensor ([链接已删除,请登录查看]) I am having the hardware here and want a short help over teamviewer - how to integrate it. When I see that you have experiences further work/projects are possible. 4 C 编程, 电子, 微控制器, 电機工程, Arduino Oct 18, 2017 Oct 18, 20174天 7时 $156
Configure 3D printer with touch screen I have a 3D printer, nextion touchscreen, radds V1.6 and Arduino Due controller. Milestone 1:You'll have to come up with the idea how to wire everthing, and come up with the progra mm for the controlls (based on Marlin or Marlin Kindra or repetier). Milestone 2: you'll have to make approx 25 touchscreen menu pages. Complete design for every page will be delivered in adobe photoshop. Desp... 6 电子, 软件开发 Oct 18, 2017 Oct 18, 20174天 3时 $1811
Simple Semiconductor Rectifiers and Power-Supply Circuits (Use Multisim) Step by step in "[链接已删除,请登录查看]" to design two types of power supplies to meet a specific requirement: Design your circuit first by hand and then verify its performance on Multisim. There is a powerpoint for reference as well. 4 电子 Oct 18, 2017 Oct 18, 20173天 22时 $203
Networks project We’re going to build a simulated switched network and have a little simulated fun. In the first part of the assignment, we’ll just do some file parsing to create our network of hosts and 4-port switches. In the second part, we’ll send some datagrams and have the switches print out some messages to the screen as events occur (e.g., “SW2: Received packet for host B. Forwa... 4 无线, 工程, 电子, 微控制器, 电機工程 Oct 18, 2017 Oct 18, 20173天 20时 $211
Electronic Materials and Devices  Must have expertise in crystal properties and growth of semiconductors, quantum mechanics of solids, shot noise and thermal noise, energy band and charge carriers, excess carrier in semiconductors, p-n junctions, solar cells, tunnel diodes, photodetectors. 9 电子, 电機工程 Oct 17, 2017 Oct 17, 20173天 18时 $211
Two Thermistor inputs on relay board replicating exact resistance to five heat pumps A relay resistor board to turn on two heat pumps and a second set of 3 heat pumps at the same time. Currently I have five thermistors in two hot water tanks of each of the five heat pumps. 2 thermistor in one tank and 3 thermistors in a second tank Wanted Leaving one thermistor in each tank only connected to two inputs in a Relay board to replicate the exact resistance of each of the two thermi... 6 电子, 电機工程, 印制板布局, 电路设计 Oct 17, 2017 Oct 17, 20173天 18时 $2599
Hack and Epson xp-432 or xp-235 printer I need to disable the scanner check or trick it into thinking the scanner is connected and operational. I believe the printer sends some initialization codes to the scanner bar and/or reads a preset binary pattern while it’s in the parked position or when it’s moving into the parked position. I would like to find the sequence to send to the main board which will trick the printer... 7 C 编程, 电子, 微控制器, 电機工程, Arduino Oct 17, 2017 Oct 17, 20173天 18时 $7888
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