Circuit Design jobs

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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    544 jobs found, pricing in USD
    2 channel Inductance Sensor 6 days left
    VERIFIED

    Provide an electronic design for a 2 channel multiplexed inductive loop detector (LC Oscillator). Design will include:- 1. Schematic, BOM, calculations, technical explanation of operation, spice modelling of circuit or equivalent 2. Electronic components to be sourced from digikey or equivalent, industrial temperature range and AEC-Q100 – automotive preference 3. Microcontroller will provide a 10Khz 50/50 square wave output (3.3V) for Enabling and sequencing the two channels 4. The sine wave output of the oscillator will be converted into a square wave. The square wave outputs of both channels need to be switched to a single timer capture input pin on the micro controller (micro controller design is not part of the scope) 5. The Detector electronics will be up to 10m from the sensor via a shielded cable 6. Inductance and capacitance of cable needs to be included in design calculations 7. The LC Oscillator will output a clean sine wave on the cable to the loop sensor with a maximum peek of +5V (negotiable < unregulated supply of 12V) at target frequency of 150 KHz. 8. A +5V, +3.3V and unregulated 12V supply is available 9. Prefer schematic to be submitted in Altium but not essential. 10. The LC oscillator will operate over ~100 KHz to ~1.1Mhz, have a fast start up/settling time. Micro controller will provide an oscillator start up window to ignore the first few samples. 11. Coil and target distance of up to 40mm, typical 25mm. 12. Provide design for the inductance PCB loop, a. Support with calculations and or modelling b. The pcb embedded loop will be approximately 120mm x 50mm in a racetrack type configuration, both channel coils will be in close proximity to each other. c. Minimum of 0.2% change in inductance at 40mm in presence of ferrous material 13. Provide Line surge protection in design

    $419 (Avg Bid)
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    3 bids

    Raspberry PI Circuit board DC to DC power Design, build and test. 1.I need to power a raspberry PI/ SBC [single board computer] computer with a 6v- 18v solar panel 2. Load is 5v and 2.4A. 3. Source is a Solar panel charger 6v to 18v , with a charge controller for the battery. 4. Battery spec is LEAD ACID batteries or Lithium NOTE; -Design, build and deliver. -This is an NDA turnkey project. - Very minimal components - Components Working temperature - AFRICA !

    $171 (Avg Bid)
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    Hello, We are looking for an experienced freelancer to design for manufacturing an existing product prototype. We have several working versions of our system. Our system is too costly to produce, we need to work on the design to reduce the BOM cost. The project goal is to reach a defined BOM value on the website [login to view URL] The job consists in: _Architecture selection _Microcontroller selection _System redesign and BOM selection _Breadboard and Solderless prototyping to test the systems _PCB Layout _Final prototype (PCBA version) to test the results The components will be delivered to the freelancer location from digikey or farnell. PCB procured from [login to view URL] Assembly to be done by freelancer for testing. Freelancer will need to be able to test and assemble PCB. Please apply to the project by mentionning the relevant experience you have on We will provide more detailed informations to selected freelancers, to refine their proposals. Software not to be done.

    $2321 (Avg Bid)
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    We are looking for PCB and Schematic Diagram Designers adept at using Altium Designer. State in your proposal the complexity of the PCB designs that you have worked on, the applications that you have designed schematics for, as well as your hands-on experience in practising DFM / DFA. Begin your proposal with the words "Substrate" or " Track". You will be expected to work along with a remote team on AEST day work hours. Your bid will be qualified according to the effort and attention you put into reading these requirements. Should you qualify, you will be required to sign NDA, and a NON-COMPETE contractor agreement. The last word of bid should be "complete."

    $7 / hr (Avg Bid)
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    I PCB controller with capacitance touch screen that will control functions in a display mode. i will send you a schematic to lay out PCB which will have just top and bottom traces per schematic. The board can be three layers. envelope size of board must be 3 x 4 inches with micro USB to load software which we will do. You lay board out to schematic and use parts that will be supplied as well in a parts list. If additional parts are needed per the schematic, must be bright enough to reconcile the differences and update parts list. Will need a working prototype that we can upload our software into from micro usb. All documents to design and layout PCB will be supplied. You will package and send PCB along with touch screen per the suggested part number in docs. We will design the enclosure to fit with the envelope size stated above. If PCB real-estate is too small, we will allow you to add to envelope size length wise about .5 inches and width wise .5 inches. Side to side will be max 4 inches and front to back will be max 3 inches. total board height with components on top and bottom will be a max height of .25 inches. Additional height will be for capacitance touch display per the part number assigned which is based on already existing prototype. Will send files later once we establish time frame. This unit will also have an active state of only 10 seconds if touch screen is not accessed within that time and will go into a sleep state, only to be awaken when touch screen is touched again for data access. This is the second time that I have submitted this job, but had to hold off for scope and design changes. The board will also need 4 mounting points nearest the corners of PCB, typical mounting points in the industry with pads. The pads will not be needed for grounding. PCB should be self contained with grounding and ground planes only if necessary. weight is an issue and don't want something that can be carried in your pocket to be too heavy

    $520 (Avg Bid)
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    23 bids

    Hi Am looking to design a retrievable very long range weather balloon, GPS monitored with valve to stabilise and remote deflating with recovery of photography equipment On-going project, must have experience Will start with small report explaining everything

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    5 bids
    PCB Schematic & Design 5 days left
    VERIFIED

    We have a raspberry pi 3 implementation/prototype and want it to be taken to a custom board.

    $136 (Avg Bid)
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    Based on my documents, I want you to have my past university student electronic circuit design and simulation project reproduced in Cadence Virtuoso. It is a minimalist project, about 5 parts. You should have knowledge of Cadence Virtuoso 6 software. The electrical circuit in Cadence Virtuoso is using 350 nm (0.35um) Technology design kit. The schematics, simulations, and layout will be provided once the job is finished. Required to have strong experience in block-level designs, top level integration and Floorplanning , along with deep understanding of layout techniques. Design rules, ESD, isolation, device matching and low parasitic. A solid track record in full chip assembly and verification and cadence skill programming is a plus. Producing and delivering high quality layouts . Floorplanning, block level layout, top level integration and pad ring layout of RF/high speed blocks. Coordinating layouts block resources and support other team members. Conducting tape-out verification tasks which include: DRC, ANT, DUM and LVS. Preparing technical reviews and product documentation. Working with cross functional teams to deliver IC Products.

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    হাই Ramnath N., আমি আপনার প্রোফাইল দেখেছি এবং আপনাকে আমার প্রকল্পটি প্রদান করতে চাই। চ্যাট-এর মাধ্যমে আমরা বিস্তারিত আলোচনা করতে পারি।

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    Project for Daniel S. 7 days left
    VERIFIED

    Hi Daniel S., I noticed your profile and would like to offer you my project. We can discuss any details over chat.

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    1 bids
    TDS Mesurment 4 days left

    Need A water TDS meter Circuit. more detail on project discussion.

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    14 bids

    You are required to design a op-amp (operational amplifier)based circuit design. I need it in 28 hours maximum.

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    6 bids

    We are looking for electrical engineer who is familiar with Indian standards. Need some engineering - Cable Schedule and Lighting

    $35 / hr (Avg Bid)
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    18 bids

    We are looking for developing the prototype (Can be Arduino) & firmware of the electronic control section in our machine development. All component cost will be taken by us. Unit will have a 7 inch capacitive touch screen, 5 servo motors, 3 electro magnetic solenoid & 1 colour sensor.

    $361 (Avg Bid)
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    We are looking for developing the prototype (Can be Arduino) & firmware of the electronic control section in our machine development. All component cost will be taken by us. Unit will have a 7 inch capacitive touch screen, 5 servo motors, 3 electro magnetic solenoid & 1 colour sensor.

    $256 (Avg Bid)
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    37 bids

    We are looking for developing the prototype & firmware of the electronic control section in our machine development. Unit will have a 7 inch capacitive touch screen, servo motors & sensors.

    $1532 (Avg Bid)
    Local
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    8 bids

    We are looking for developing the prototype & firmware of the electronic control section in our machine development. Unit will have a 7 inch capacitive touch screen, servo motors & sensors.

    $715 (Avg Bid)
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    20 bids

    We need someone to create a finished prototype for a smart wifi display card with Nano Technology circuit. The card must be near to the size of a business card (3.5 x 2 inches). Thickness should be 3-5 mm or (Half Centimeter thick). Card will be connected wirelessly to wifi and will display colored images coming from a remote server. Server side is our duty and we will provide all information for that. We have few days to get our finished prototype ready so please serious bidders needed who can make this possible.

    $570 (Avg Bid)
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    PoE LED Driver 1 day left

    I need a 12v/50w LED driver to be powered (via PoE) and controlled via TCP/IP. The driver needs to be able to check status of the LED light fitting (on/off) and also be able to dim the fitting.

    $29 / hr (Avg Bid)
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    This is Dinesh KS from Synergy circuits PVT LTD. (HBR Layout -Bangalore) We required your support to do the simulations in HyperLynx software, frequency response, eye diagram, S-Parameter extraction, Insertion loss, return loss, Signal integrity etc , So needs to support from our locations We will start this project within few days, but right now we don’t have input from client side, But we required the price details from you, so I sent example input, based on that provide the Quotation. The Example circuits are attached and below mentioned details are the Example inputs from SI simulation. Input schematic: attached. Material : Metron 6 Board thickness: 180 mil Stack up: 22-26 layers. Frequency: 6GBS Clock speed: 400MHz. Total signal: 12 signals from DUT to the tester (4 signals thru a relay and 8 signals thru inductor ) and including via structure. USB0_DM0 A17 To Tester Channel relay 45ohm to gnd relay 130 ohm to gnd USB0_DP0 B17 To Tester Channel relay 45ohm to gnd relay 130 ohm to gnd USB1_DM0 C20 To Tester Channel relay 45ohm to gnd relay 130 ohm to gnd USB1_DP0 D20 To Tester Channel relay 45ohm to gnd relay 130 ohm to gnd USB0_RX0P A16 To Tester Channel Loop back USB0_TX0P via 0.1uf - series L with TC USB0_RX0M B16 To Tester Channel Loop back USB0_TX0M via 0.1uf - series L with TC USB0_TX0P A18 To Tester Channel Loop back USB0_TX0P via 0.1uf - series L with TC USB0_TX0M B18 To Tester Channel Loop back USB0_TX0M via 0.1uf - series L with TC USB1_RX0P A19 To Tester Channel Loop back USB1_TX0P via 0.1uf - series L with TC USB1_RX0M B19 To Tester Channel Loop back USB1_TX0M via 0.1uf - series L with TC USB1_TX0P B20 To Tester Channel Loop back USB1_TX0P via 0.1uf - series L with TC USB1_TX0M A20 To Tester Channel Loop back USB1_TX0M via 0.1uf - series L with TC Design: OrCAD & Allegro. Please review the inputs and provide Quote. Thanks Dinesh KS +919844615310 Design Mangaer Synergy circuits pvt ltd India

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    Need a pcb design with BOM for a raspberry compute module 3 lite, that will be used in a manufacturing environment as an IOT gateway. The design must include: - 16Gb eMMC - Wifi - Bluetooth - Ethernet connection - Power supply - LED's (energy, indications) - push button for factory reset. We develop software solutions, so we dont have the knowledge of standards or other needs for the project, so recommendations are welcome.

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    We are looking for developing the prototype of the electronic control section in our machine development.

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    14 bids
    POE DC/DC Converter 1 day left
    VERIFIED

    I need a 50V 40W isolated DC to DC converter for a PSE POE product. Input voltage from +5V to +32V, it should be >85% efficient and use a stock available transformer (Coilcraft, Pulse, Digi-Key, Mouser, etc.)

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    18 bids

    We want PCB circuit designed and developed for our product which is related to payment system

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    20 bids

    We need a schematic circuit design and development of our product which is involved in a payment system.

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    Hello, I want to hire an electronics engineer who can design a wired network which can multiplex data over power. The network has to transfer data on 2 wires only which are also used for power . The voltage is fixed at +24V DC . The data rate can be approximately 1Mbps. Interested candidates mention the technology they want to use for the project. See the attached file for more clarity

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    should be able to do circuits from equation do not expect payment first once answers are correct payments will be released. Will have two circuit questions.

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    Final product expected at completion of this project is: There are two raspberry pi zeros: 1) Primary device 2) Configuration remote Primary Device: This device is an iot device based on raspberry pi zero w, it has two major third party hardware components – an infrared sensor and a relay. Configuration remote: This device is a raspberry pi zero w based device, which is to be used for configuring a primary device. A remote device has two major third party components, one infrared LED, and buttons. Workflow: When the remote device’s infrared led is in the direction of the primary device and the button is pressed it should turn on the Bluetooth of both remote and primary device. Devices should pair with each other and remote should send a Wi-Fi ssid and password. Then Bluetooth of both the devices should turn off and primary device should connect with the Wi-Fi router using received credentials.

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    Hi I need an eagle PCB done I will share the details please bid if you are interested Regards

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    We are looking for developing the prototype of the electronic control section in our machine development.

    $237 (Avg Bid)
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    16 bids

    We are looking for developing the prototype of the electronic control section in our machine development.

    $766 (Avg Bid)
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    20 bids

    PCBA - Firmware development for development of a machine. Unit will have Servo motor of high torque (20Nm), sensors.

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    Hello, BUDGET is $10 as its les than an hour job! Last freelancer is not answering and I got stuck, please check the attached pic and bid, I need to connect these. draw how : Battery to be charged by a usb Indicator to show how much battery left. Also a ON/OFF switch. BUDGET is $10 as its les than an hour job! Thanks

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    I shall try explaining the project in a nutshell : 1. This project aims to identify when the medicine has been popped out from the blister package by a patient. It needs to record the time and send the information via bluetooth to the patients phone which has the app running over it. 2. The device is attached to the blister package and with the help of 3 sensors : Accelerometer, Contact Senor and a piezo sensor identifies if the medicine has been popped out or not. 3. This entire device is to be powered by a low power processor with bluetooth (Dialog IC). It needs to run on a coin battery for atleast 5-6 months. We are looking for people who can help us with the hardware designing of the system.

    $615 (Avg Bid)
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    Need to Design 5V DC Power Supply Circuit. (Input:-220V-240V AC & output:- 5V DC with 2Amp Current) I need the design of power supply (i.e. with circuit diagram and pcb layouts)

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    Simulation Tool should be HyperLynx software We required your support to do the HyperLynx simulations, frequency response, eye diagram, S-Parameter extraction, Insertion loss, return loss, Signal integrity etc for our clients. We will start this project within few days, but right now we don’t have input from client side, But we required the price details from you, so I sent example input, based on that provide the Quotation. The Example circuits are attached and below mentioned details are the Example inputs from SI simulation. Input schematic: attached. Material : Metron 6 Board thickness: 180 mil Stack up: 22-26 layers. Frequency: 6GBS Clock speed: 400MHz. Total signal: 12 signals from DUT to the tester (4 signals thru a relay and 8 signals thru inductor ) and including via structure. USB0_DM0 A17 To Tester Channel relay 45ohm to gnd relay 130 ohm to gnd USB0_DP0 B17 To Tester Channel relay 45ohm to gnd relay 130 ohm to gnd USB1_DM0 C20 To Tester Channel relay 45ohm to gnd relay 130 ohm to gnd USB1_DP0 D20 To Tester Channel relay 45ohm to gnd relay 130 ohm to gnd USB0_RX0P A16 To Tester Channel Loop back USB0_TX0P via 0.1uf - series L with TC USB0_RX0M B16 To Tester Channel Loop back USB0_TX0M via 0.1uf - series L with TC USB0_TX0P A18 To Tester Channel Loop back USB0_TX0P via 0.1uf - series L with TC USB0_TX0M B18 To Tester Channel Loop back USB0_TX0M via 0.1uf - series L with TC USB1_RX0P A19 To Tester Channel Loop back USB1_TX0P via 0.1uf - series L with TC USB1_RX0M B19 To Tester Channel Loop back USB1_TX0M via 0.1uf - series L with TC USB1_TX0P B20 To Tester Channel Loop back USB1_TX0P via 0.1uf - series L with TC USB1_TX0M A20 To Tester Channel Loop back USB1_TX0M via 0.1uf - series L with TC Design template: V93K Design: OrCAD & Allegro. Please review the inputs and provide Quote. Please provide the tool set detail & simulation details. Please call me if you required any more inputs or clarification. Thanks, Suresh Design Manager

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    A system to remote access data from a power inverter.

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    designing a small section of a communications network in an abattoir two-stage ammonia refrigeration system all hardware is to be selected from the AS-I range manufactured by Pepperl and Fuchs, information available at [login to view URL] . The section of the plant that you will be controlling includes 4 package plant ammonia compressors, their associated valving and the fan banks on the evaporator and condenser. Each compressor has a small PLC performing local control and providing a number of inputs and outputs (I/O) to the larger plant PLC that coordinates the overall plant operation. The compressor PLCs are located in a small control cabinet mounted on the compressor pad. The valves are field mounted on the ammonia piping to and from the compressors and are controlled by the plant PLC. The network is to be an AS-Interface network, connected to a Pepperl and Fuchs ASInterface master VBM-CLX-DM in a ControlLogix rack on the main PLC. The details of the rest of the control system are not relevant to your task, you just need to ensure connectivity between the devices and the AS-I master. There is an Emergency Stop button located on each compressor control panel and the main control cabinet that must be linked using safety I/O back to a Safety Monitor that is located in the main PLC cabinet. The design of the safety system in out of the scope of this project and will be completed by an RPEQ.

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    design pcb and solder pic mcu needed in cairo

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    electronics pendulum very easy circuit diagram, easy to make this circuit and no more part required for make [login to view URL] this circuit i use 9-0-9 center tap trnsfermer coil , transfermer primary coil terminal have more number of turn so it is call A winding and secondary winding is B . you can make this project very easily .

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    Need design of a measuring device using an arduino, providing a schemteic of design and coding.

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    Project for Dhruv A. 1 day left
    VERIFIED

    Hi Dhruv A., I noticed your profile and would like to offer you my project. We can discuss any details over chat.

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    We are developing some devices to measure physical activity using strain gauges. Part of the process will be to measure an analogue voltage / current (for about 15 s) from a bridge circuit, sample at ~1000 Hz 16 bit, then transmit via bluetooth to a smart device (iPhone etc). Transmission doesn't have to be real-time, it could be buffered and then sent as a package. The electronics will need to be battery powered. In the first instance we will need a working prototype which would lead to a product that required no operator input and turns itself off after a fixed time. Sorry no images at present. In the longer term the electronic device would need to have a unique id number such that several of these devices could be used at the same or similar times but logged against their id .

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    I need a diagram for a Polarity Auto Corrector,in the moment i use shitch for manual correction polarity but i need electronic for out [login to view URL]!

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    We need the prototype of the PCB assembled. We will provide the Gerber & BOM files. Components would approx. 55USD. Need 2 prototype PCBA. It could be recurring order for larger quantity.

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    We need the prototype of the PCB assembled. We will provide the Gerber & BOM files. Components would approx. 55USD. Need 2 prototype PCBA. It could be recurring order for larger quantity.

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    Printable project Ended
    VERIFIED

    I need some graphic design. I need printables made for my blog to offer my visitors. I have many other things i need to get done before my launch in August and could really use some expertise with print design, specifically party printables.

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    Hello, need a pro who is familiar with designing network switch circuit - pcb preferably with chipset IC+ IP1810. [login to view URL]

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