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    9,964 circuit designing jobs found, pricing in USD
    Lithium charger 6 days left

    I need a small circuit board designed to charge a pair of 18650 cells and proform switching. Please contact for more details.

    $301 (Avg Bid)
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    17 bids

    I have a circuit that isn't working as it should. This circuit should convert a sin wave to a square wave, then the frequency of the signal should be divided by 10 using the HC4059. The signal looks very nice all the way until the HC4059. After that IC, the signal looks terrible from varying frequency. I need to know why this is happening and how

    $76 (Avg Bid)
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    15 bids

    ...rest. First let me describe the purpose of this circuit. I will be using an ipad to take photos of people automatically. The app I uses plays a beep noise through the 3.5mm headphone jack the other end of the cable is connected to the circuit board where the microphone is currently located. The circuit would hear this beep and turn on a relay switch

    $168 (Avg Bid)
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    20 bids
    Remote Control Toy car ciruit 5 days left
    VERIFIED

    I want someone to build a 4 CH Remote Control toy car circuit. The circuit will limit damage on rc car wheels and most be transportable.

    $547 (Avg Bid)
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    14 bids

    I creat a golf tournements campany. The name will be: Circuit 19 There is some images i like I would like something modern and simple I dont need any golf item on the logo. Also, I will like to have some logo with a big C (without the name circuit)

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    39 entries

    Need help with a project of an electronic circuit

    $87 (Avg Bid)
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    27 bids
    multidruino -- 2 4 days left

    a circuit and a pcb design for the project

    $124 (Avg Bid)
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    2 bids

    Please do chat me and I explain everything

    $10 / hr (Avg Bid)
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    32 bids

    Hi, do you have experience with openhab? do you have experience with home automation? are you able to draw a circuit plan - how to communicates devices? if yes then i need you for consulting 2h + drawing a circuit plan...

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    1 bids

    We have a power electronics circuit ready. The task will be to design the PCB layout which we will send for fabrication and the electronic component soldering will be done by us. The prototype should run after fabrication for the project to be considered successfully completed.

    $108 (Avg Bid)
    NDA
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    24 bids
    Electronic design 3 days left
    VERIFIED

    We require the services of an electronics engineer to design circuit board,electronics and system to use on our new range of furniture

    $472 (Avg Bid)
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    44 bids

    ...states of the device, these will drive various outputs (esc, motors etc) I have attached a [login to view URL] image showing the circuit layout. I may also add: - SD Card Reader (logs etc) - Laser diode - battery monitoring circuit so please estimate for this. I would like the work to be done via chrome remote desktop to a chrome OS computer connected

    $740 (Avg Bid)
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    21 bids

    I want the schematic and also the corresponding pcb of this circuit design with all the needed (Gerber) files.( You must only use the free version of KiCad software, use of another software design package is not acceptable ! ). I will provide you with a design from scratch ( by hand - pdf file ). I believe it will be an easy job for someone who knows

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    4 bids
    Multidruino 2 days left

    Making a circuit and pcb design

    $11 / hr (Avg Bid)
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    16 bids

    Hi Sharmin A., I would like to purchase your design that has a brain on the left and a circuit on the right.

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    1 bids

    Fitness based app to cast to tv screens with multi video displays, interval timer and back end programme/Fitness circuit builder!

    $328 (Avg Bid)
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    6 bids

    Hello, I’m looking for someone with experience working with ESP32 and also designing PCB for production. I have a development board with a schematic that needs updates to fit our current requirements. Some of the work are as follow: 1. Remove some of the parts from the development board that are unnecessary, and not applicable to our current function

    $42 / hr (Avg Bid)
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    58 bids

    I just require a circuit diagram for an arduino project that I have. I also require the code to be double checked.

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    I need a full Arduino program and circuit design including specific parts required to control heating of 6 pieces of Nitinol wire using pulse width modulation. Requirements: 1. I need a full circuit design 2. List of parts available in Australia that I should buy in order to build the circuit 3. Arduino program to control the heating of the wire

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    37 bids

    Hi, We are looking for a pcb designer who should have good knowledge on mixed signal pcb designing, analog circuit designing and multi layer pcb designing. Submit your proposal with your previous experience. Details of the project will be shared to the concerned freelancer who got selected.

    $21 / hr (Avg Bid)
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    34 bids

    I need to get data from 4 to 20 ma sensors and process input data using a microcontroller. After processing the data, it will be transferred to the computer via the Rs-232 protocol.

    $148 (Avg Bid)
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    25 bids

    We need Fritzing diagram for 12 simple circuits. The circuits are simple and I will give all the details which has to be designed using Fritzing software w...are simple and I will give all the details which has to be designed using Fritzing software will all the parts and clearly labeled. There are 11 simple circuits and 1 final circuit combining all.

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    I am looking for an experienced individual or team that will create an initial design and functioning prototype for a custom electronics project involving wifi communications, cameras and motion detection. Strong experience with consumer quality production of electronics and design is preferred.

    $552 (Avg Bid)
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    25 bids

    ...Operations, Modifications and Maintenance of telecommunications equipment and associated apparatus. (IP, Voice, EoSDH, MPLS, etc.) • Testing, commissioning and fault isolation of circuit orders for IPLC, EoSDH, voice circuits, IP circuits etc. (including the last mile offnet segments) • Implementation of new projects based on EPLAN, statement of work and provide

    $53995 (Avg Bid)
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    4 bids

    ...regenerative energy from the electric motor during freewheeling, to charge back the battery. I want this to be semi-automated and hence I'm looking for a MOSFET/IGBT based switching circuit to achieve the same. Below is the scenario and problem statement. Check the diagrams for reference What I have: 1. 1000W E-bike controller with throttle 2. 48V Lead Acid battery

    $151 (Avg Bid)
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    6 bids

    Hi, We are looking for a freelancer who can develop firmware for ESP32 board, circuit for power supply and controlling the 16X16 led lights (WS2812B). Also we need Android App for controlling the led lights like sending customize or fixed images, text using BLUETOOTH. The freelancer has to provide the specification of the battery on which this board

    $398 (Avg Bid)
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    11 bids

    I have a simple device that I will need to control and monitor from from a PC via its USB port. This device will have an I/O port (one for for 8-bit input and one for 8-bit output ). Also, apart from the I/O, I will need a few additional lines to work as CONTROL lines. The interface circuitry could be built using an ARM Cortex micro-controller, or use an available standard USB interface chips. In...

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    33 bids

    ...allowing the output voltage adjustment for a DC/DC converter based on varying an input voltage making the DC/DC converter dynamically programmable.I have simulated (LTSPICE) the circuit with the values obtained from the Excel spreadsheet and it works as advertised. So here's the change that I need made to the Excel spreadsheet: I want to be able to choose

    $179 (Avg Bid)
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    25 bids

    ...charging protocol of the devices connected and choose suitable current upto 3 amp to charge at fastest speed possible • Should have various protection circuitries such as Short circuit, over-temperature, over-voltage, over-current and over charging • Should have Auto cutoff feature that is it should automatically disconnect once connected device is fully

    $2324 (Avg Bid)
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    9 bids

    ...what to really do to make it work. Since Wolfram Alpha program is on Android and Windows and can also be used from their website. So I guess I would just need to rip out the circuit board in the calculator and install an Audrino Nano in it. Then I would need to code it so that the Audrino would boot up in the Wolfram Alpha program or code it in web-based

    $220 (Avg Bid)
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    4 bids

    ...OV7670, STM32 microprocessor, Battery charging module, Bluetooth AT-09. We only have circuit diagrams for individual components but we need Gerber file to place online order for final board. You will have to do: 1. Review components we require on the board and draw a circuit with applicable components, resistors, capacitors, etc 2. Make suggestions and improvements

    $215 (Avg Bid)
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    26 bids

    ...is a power supply & battery charging circuit design. Fabrication of the module is not required. Subject to the specifications below, required for delivery is: - circuit board BOM (incl manufacturer part numbers) - design files (preferably EasyEDA, but Kicad, Eagle or Altium OK) - detailed description of circuit operation Specifications: - usb-c in

    $390 (Avg Bid)
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    22 bids

    A network card with 12 ports, 10 ports are good and 2 ports are bad.

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    1 bids

    My project is to use an arduino circuit like ATMEGA328P Pro Mini 328 Mini and a SIM 800L gprs GSM circuit board, prefered board to be smallest possible or ( if you can recommend better module for this project is fine let me know) conected to a the main alarm control panel and whenever there is an alarm this module call and send a text massage to the

    $3 / hr (Avg Bid)
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    Hello, I want te redesign circuit to test self interference cancellation on 28 Ghz with different Bandwidth 5 mhz and 10mhz and 20 mhz to check the amount of self interference can be cancelled. Why I choose 28 Ghz because at this will be the frequency for 5G . Self interference cancellation has many techniques one of them is antenna cancellation So

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    2 bids

    i need circuit for sine wave(220vac)synchronization and sharing current for more detail please contact with me

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    13 bids

    hi i need a clear code to count rpm from engine (from the spark plug cable or fuel inyector) its going to be par...i need a clear code to count rpm from engine (from the spark plug cable or fuel inyector) its going to be part of a longer code so no "delay" functions. also shematics of circuit if needed. engines go up yo 16,500 rpm to be used with nano

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    Build printed circuit from a blueprint drawing project of the item attached. PCB file requested. Possibile request to build an hardware prototype with USB port (not LPT port like the original): request of MOB Excel file. I already have a PDF file of the original blueprint.

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    18 bids

    I am trying to get someone to integrate my flashing circuit with a motion censer ,,,either create a Gerber file or make the whole motherboard itself. It has to operate 20 5mm LEDs lights with 2 AA battery's.

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    We have a network board with 8 ports. Each port is controlled by an onboard CPU and associated memory. Out of 8 ports, two ports are bad. It could be bad CPU, bad memory or other reasons. We are looking for someone that can repair this board.

    $539 (Avg Bid)
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    11 bids

    Use Photodiode BPW34 or 21, design an circuit that would do : 1. amplification from nA current input to 100X to 1000X 2. Time integration for this input 3. Analog Output to connect to Arduino as analog 4. Bonus : 16 bit A/D as output for Arduino.

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    28 bids

    I am working on wireless power transfer and have come up with some circuits I need to compare in terms of efficiency. I need someone to help me plot their efficiencies against coupling coefficient as well as varying load impedance. It's very easy stuff, just that I don't know how to go about the simulation. I have all component values and necessary equations. Just the plotting is all I n...

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    I am looking for a PCB board designer. Design a mini circuit board (needs to fit inside at the bottom of the coke can) that powers a mini fan and a circular UV tube using lithium battery that can last min of 120 minutes under temperature around 2-5 C. . This unit needs to provide a switch that gives 3 specified time per cycle (Ex. 1 min/3 times a

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    14 bids

    I need some one to design a mini circuit board (needs to fit inside at the bottom of the coke can) that powers a mini fan and a circular UV tube using lithium battery that can last min of 120 minutes under temperature around 2-5 C. . This unit needs to provide a switch that gives 3 specified time per cycle (Ex. 1 min/3 times a day, 3 min/3 times a day

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    6 bids

    ...Some title suggestions for possible articles (around 1000 words): JTAG BOUNDARY SCAN 5 Facts That Your Boss Needs to Know about Boundary Scan Testing How to Simplify Your Circuit Board Testing with JTAG Boundary Scan How Boundary Scan Testing can Reduce PCB Manufacturing Wastage Common misconceptions about JTAG Boundary Scan JTAG Boundary Scan - Myths

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    ...is absolutely amazing all by itself. I used to be his executive coach when he was a high performing leader at General Electric. He's asked me to join him on the speaking circuit to help draw out the practical principles that he learned/experienced during this historic run that apply to individuals both personally and professionally. It also applies

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    Description: Inverter is a small circuit which will convert the direct current (DC) to alternating current (AC). The power of a battery is converted in to’ main voltages’ or AC power. This power can be used for electronic appliances like television, mobile phones, computer etc. the main function of the inverter is to convert DC to AC and step-up transformer

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    12 bids

    I need a professional who can make quality double circuit board for ESP8266 for a prototype. The board will also be assembled with other accessories. The project will include a total assembled box. Only high experience person should submit bids. No overseas but US only please. Contact with your prior similar work experience.

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    16 bids

    My idea: each explosion in valve cause one vibration. I need a sensor which transfer this vibration to frequency output. Power source Ucc: 12~24V Output...Power source Ucc: 12~24V Output: rectangle, 0 to Ucc, freq modulation. I am looking for existing sensor waterproof, dustproof, fit to engine by screw. OR design electronic circuit for this device.

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    3 bids