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    15,128 circuit design jobs found, pricing in USD

    Thermal characterization of Li-ion battery for internal short circuit and nail penetration test for cylindrical cell.

    $20 (Avg Bid)
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    2 bids
    touch switch 6 days left

    It simply a touch switch .Using battery 3.7 volt , I need to touch the battery almunium cover it on and off the battery exactly the link I have mentioned below . I need only the circuit digram. i need the circuit by smaller as possible , to not make a pcb larger than 4cm*2.5cm

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    Grid tied system design required as attached example. Minimum output required 25kva. No backup battery storage required as simply reducing mains costs. We have 175 200W solar panels with the following specs: MODULE TYPE: ESG-200M (MONO) Peak Power (Pmax) (W): 200 (200W) Production Tolerance (%): ±3 Maximum Power Current (Imp) (A): 11.2 Maximum Power Voltage (Vmp) (V): 18 (18V) Short Circuit Current (Isc) (A): 12.8 (12A) Open Circuit Voltage (Voc) (V): 21 (21A) Dimensions (mm): 1630x670x35 Maximum System Voltage (VDC): 1000 All technical data at standard test condition AM=1.5 E1000W/m2 Tc=25□

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    We need a design for a system which is integrated with both solar power and mains power with battery integration. No backup batteries needed, just enough to allow for solar supplementation to reduce mains costs. The location has high energy consuming equipment. Minimum output required 25kva. We have 175 200W solar panels with the following specs: MODULE TYPE: ESG-200M (MONO) Peak Power (Pmax) (W): 200 (200W) Production Tolerance (%): ±3 Maximum Power Current (Imp) (A): 11.2 Maximum Power Voltage (Vmp) (V): 18 (18V) Short Circuit Current (Isc) (A): 12.8 (12A) Open Circuit Voltage (Voc) (V): 21 (21A) Dimensions (mm): 1630x670x35 Maximum System Voltage (VDC): 1000 All technical data at standard test condition AM=1.5 E1000W/m2 Tc=25□ We need a full design s...

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    We currently have a working PCB (see image) which needs to be updated. We must add a USB connector and InfraRed transmitter/receiver. The IR circuit is very simple and will be entirely provided. The work is to be done in Altium. The schematics and layout must be updated and parts created if needed, as we want to extract the BOM from the Altium design. More details will be provided to selected candidates. This may lead to many more projects with us.

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    Topology for the CMOS ROIC have to be have to employ GMI (Gate Modulated Input) topology for the system design. HgCdTe photodiodes along with circuit simulators will be designed for the detector model. All the detector information required for the ROIC design can be put in to the circuit model, e.g., the dark current, photocurrent, zero bias dynamic resistance, peak dynamic resistance, junction capacitance, etc

    $566 (Avg Bid)
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    Hi! I am an embedded developer. I am working on a project "Indoor air quality Monitoring system". I need a circuit designed for this one. I will be using a microcontroller for driving various sensors. This product is in its RnD phase, as of now will requiring only a circuit, if the circuit works , will be requiring lots of them, will be ordering them accordingly.

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    i need a software which tells me about a stock as soon as it touches upper circuit and then all of its details like market cap price its stock price for the past month and put all this data on excel and hence make a list of all the stocks like these

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    A MACHINE CONSISTS OF WHEELS. I NEED A PERSON WHO CAN DRAW THE DESIGN IN ANY DESIGNING SOFTWARE AND DO SIMULATION OF ROTATING WHEEL IN ANY SOFTWARE. INTERESTED PEOPLE CAN CONTACT FOR PAID WORK. I am uploading the photo of wheel . a electrical circuit diagram also needed

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    simulation is also required of designed wheel and diagram circuit

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    ESP32 and C Expert 2 days left
    VERIFIED

    Looking for ESP32 and C language expert to edit a code and a circuit design for a simple project that I'm working on.

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    Hello I would like to hear from you if you have experience in analysis of linear electric circiuts. You will have to do some tasks regarding this. an example is attached.

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    Electrical Design 2 days left
    VERIFIED

    We want to Design a Electrical Circuit for on off operation of a machine.

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    14 bids

    I need to design a pcb layout 2 layer with ALTIUM Designer v.20. All components are in bottom layer, except push-buttons, USB connector and OLED. These components are locked on top layer and they must not be moved. I drew a probable size of the circuit (67x15mm), anyway it can be resized by few millimeters. For payment, I would create two milestones with release of first milestone after the placement of all components (without tracks).

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    I want to design a Low offset Comparator circuit with other few specifications. If anyone really know this field please contact me. Thank you.

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    Design me a FPC Cable with both end Connectors of 80 - Pins 2*40P with Pitch of 2.0mm, need to make 2 x Designs 1. FPC Cable with both End 2*40P 2.0mm Connectors (I will provide the Connector Drawing & Foot prints) 2. FPC Cable with both End 2*33P 2.0mm Connectors (I will provide the Connector Drawing & Foot prints) STP File & Foot Prints are Attached. I will send the file to FPC Making factory to order the FPC Example picture is attached also,

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    Need design and working prototype of Arduino or ESP32 for use as programmable/adjustable constant voltage and constant current regulator. Also, output will need to be Transistor/FET controlled for use as pulse out. Circuit should be capable of being powered by typical usb from laptop or alternate power supply, but built using usb-c preferably. Input power should range from 5VDC to 30VDC or higher. Adjustable output voltage up to 30 VDC minimum with 16 bit resolution. Adjustable output current up to 2 amps minimum with 16 bit resolution. Preference is to have a socket for the Arduino (embedded Bluetooth and UART) or the ESP32 (embedded Bluetooth and UART) in the case of failure. Drawings, schematics, and GERBER files should be included as well as a bill of materials, along ...

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    We have been doing research underwater using laser equipment. The current version we are using is a simple on/off laser that is activated by a pressure switch. After using it for quite a while we now want to make laser equipment with logic capabilities by adding a microcontroller. We also want to simplify the circuit into a small PCB that’s easily integrable. Bids will be looked at and assessed on 13th Jan 20:00 GMT. Please send all messages or questions through the Freelancer messaging system.

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    PCB Design 2 days left

    We are looking for a freelancer to design a carrier board for the Arduino MKR series microcontroller. This board will combine components found on the MKR Mem Shield, MKR IMU Shield, and MKR GPS Shield; these designs are open-source and available in Eagle for ready reference. Additional features to be added include a switching power supply, 0-20mA current loop input support, and test pads/external interconnects. Software is already developed, so pin-compatibility with existing shields is preferred. Design goals include: *** Integration of existing modules *** 1) Socket compatibility with the MKR WiFi 1010, MKR WAN 1310, and MKR GSM 1400 modules 2) Integration of the BNO055 IMU module from the MKR IMU 3) Integration of the SD card portion of the MKR Mem Shield (flash memory ...

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    We are looking for a freelancer to design a carrier board for the Arduino MKR series microcontroller. This board will combine components found on the MKR Mem Shield, MKR IMU Shield, and MKR GPS Shield; these designs are open-source and available in Eagle for ready reference. Additional features to be added include a switching power supply, 0-20mA current loop input support, and test pads/external interconnects. Software is already developed, so pin-compatibility with existing shields is preferred. Design goals include: *** Integration of existing modules *** 1) Socket compatibility with the MKR WiFi 1010, MKR WAN 1310, and MKR GSM 1400 modules 2) Integration of the BNO055 IMU module from the MKR IMU 3) Integration of the SD card portion of the MKR Mem Shield (flash memory ...

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    Design two layer PCB for circuit schematic provided by client. PCB size 85mm x 85mm

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    This Project is only For Pakistani's Please I need Fully expert electrical engineers Who has All hardware for testing Who is fully expert in coding pcb's ( EAGLE, ALTIUM, easyEDA, PROTEUS, ) Arduino/ Microcontroller(Arduino IDE, Platform IO, MPLAB, etc..) circuit simulation (Pspice/LTspice/Proteus/Multisim) iot technologies (BLE, Wi-Fi, RF, GSM, ESPa32/esp8266, STM32)

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    In this project we use little things Like Bulb Wire Switch Battery

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    Hi everyone, I need Help designing a very simple analog circuit with Opamp NE 5532. Im strugling making this to work. what I actually need is to amplify a voltage signal from 0-3.3V to 0-10V. there is a lot of circuits on the net, but i can not make it work.

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    PCB design for a scale with a 3G module to send results over the sms. Circuit is intended to be powered from battery with a support of solar panel. Device block diagram is attached.

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    Looking for a solidity dev to write a car racing game smart contract. These should include: - Smart contract for racing car NFT with rarity DNA (ERC-721) - Smart contract for racing circuit NFT - owners of the circuits can organize car races. (ERC-721) - Reward token for holders (ERC20) Send budget and timeframe, as well as CV with previous proven work to be taken into consideration

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    Base on Open source hardware project, adding I2C seonsors and SPI modules. All modules have files(Eagle Cad). Those are for dev modules, remove un-necessary leds, switches, pin outs and adding I2C , SPI modules This is initial project, so there will be new projects following up continuously, such as artwork and modifications. Feel f...so there will be new projects following up continuously, such as artwork and modifications. Feel free to apply, and I look forward to work with you. <Please see the attached files for requirements> main MCU to a sibling mcu that has PSRAM on it. 5ea I2C sensors, 2 SPI modules new Wireless charge module This project is olny schematic design , don't need to draw a PCB Artwork. Just check the design considerations.

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    Objective Design and initiate production (PCBWay incl. assembly) of small circuit and PCB to be used as an interface/sensor module. The function is to connect to a Panasonic PIR sensor (EKMC1601112) (via JST connector) and it should contain a small solid state relay to be able to control 220V AC (2 LED spots 220V AC/5W each) (Phoenix Contact connector) The PCB will be connected to another PCB (not in scope) using a JST connector providing 3.3V DC, 5V DC and I/O pins of an ESP32-WROOM The ESP32 PCB is already designed and the JST connector is also defined including ESP32 pin usage Background An existing PCB with an ESP32-WROOM will need to connect to this new PCB to allow the existing PCB to get PIR sensor readings as well as the ESP32 should be able to turn on/off 2 LED spot...

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    Have to have an adafruit SAMD board circuit playground code already just need to translate from learnado to adafruit samd

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    Circuit design, embedded system, functional PCB design, PCB schematics, Carrier board, image sensor board design, Schematic Drawing

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    24 bids

    I have a got a redline pdf comment that needs updating in Eplan urgently. The freelancer must be an electrical engineer capable of checking data sheets and updating electrical drawings accordingly. The drawings have a total of 60 pages and the vast majority of the changes are texts, update circuit breakers, add fuses and make drawings look easy to read. I will like the freelancer to start work straight away. To be consider please use "E-Plan Design Eng" in your tittle. Must have plan P8 Professional V2.9 SP1 installed and ready to go

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    ...reconfigurable SIW antenna and its simulations on HFSS. One design will be rectangular SIW antenna and other will be of Quarter Mode Rectangular SIW antenna. Antennas will reconfigure between 3 different bands that I will provide. Design should be novel and antennas will be made to reconfigure using different slots in structure and PIN diodes. An optimal DC circuit will also be designed to control diodes which should provide good isolation between RF signal and DC signal. Microstrip to SIW transitions will also be used while exciting antennas. Antennas should provide good S11 parameter and gain in all desired bands. You have to provide me formulas that will be used to calculate different parameters of antennas like lengths and widths etc, design and simulati...

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    Step down inverter circuit from 2200vdc to 480vac, it should be able to power inductive as well as resistive load, use all the components with maximum amps capacity so a single circuit can be used for any amount of load

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    I have a small circuit with a buck converter and a boost converter, buck converter has a variable input between 4.5v and 18v and a fixed output for 3.3v with a maximum load of 1A (including boost load) with an average load of 150mA Boost converter it's attached to 3.3v buck output and rise the voltage to 5V, with a maximum load of 500mA and an average of 80mA I want you, to calculate the best values for all components (resistors, caps and inductors) knowing this voltage, target and max current load and buck/boost frecuency, maximum efficiency mandatory , check image schematic. Only freelancer expert on converter efficiency and inductors Due it's a basic work, I would like to have today Buck AEROSEMI MT1470 Boost Texas TPS61070

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    I have a school assignment to be submitted It is a practical question I requested to submit in less than a week in my school. I am to write program, using C program language, run it print both the program and the output for submission Can it be done perfectly without error in few days. I will forward the questions as soon as I hear from you 1.  The analysis of an electrical circuit results in the following system of simultaneous equations. Write a programme to obtain the values of currents: i1, i2, i3, and i4. i1-2i2- i3+3i4=4 2i1+ i2+ i3-4i4=3 3i1- i2-2i3+2i4=6 i1+3i2- i3+ i4=8 2.    A three-dimensional structure is represented by the following linear equations. Write a programme to obtain the point of intersection of the three planes.     x...

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    Goal: design a new PCB including part selection, BOM, board design, coding, debugging. Design to use UL listed components and design layout. Designed PCB: Using a microcontroller to control the output state of a solenoid, opening, and closing it when certain inputs are met. The solenoid will open (inject) and close on a schedule of 2 minutes on and 2 minutes off a selected number of times & schedule of days. Ex, on and off cycle repeats 10 times, every other day. There will also be a pressure switch which will need to be closed in order for the solenoid to open, if it opens the scheduled solenoid would stop. Components: - Microcontroller (Preferably AT Mega 324A or AT Mega 168) - LCD Display (NHD-C12864LZ FSW-FBW-3V3) to show the current setting as well as...

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    i have a code for tfet using verilog-a,i need to get a circuit from verilog-a in cadence virtuoso and design digital circuit,half adder and ring oscilator

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    my requirement is wifi energy harvest..circuit and design procedure..

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    Logo design for social media. Name: Daz tinkers Subject matter: YouTube channel hosting content around hobby boards like Raspberry Pi, Arduino, etc... I would like it to incorporate a circuit board style in the logo e.g. Required: PSD file(s) on completion

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    Drawing a circuit diagram and identifying components of a Vacuum cleaner from photos.

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    ...materials is a carbon-based paint that is painted onto walls and electrically grounded. The manufacturer of the paint recommends that the electrical ground be connected to a 30-amp circuit breaker. However, electricians and electrical engineers with whom we are working recommend against installing the circuit breaker. I would like for an electrical engineer to please explain (1) why there appears to be a conflict between manufacturer recommendations (from Germany) and recommendations of electricians and electrical engineers (in the United States), (2) explain what is the best course of action (should the ground have a circuit breaker or not?) and (3) answer questions about installing the paint. Note the difference here may be because the paint is manufactured in...

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    ...rectifier battery group design, technical specifications is in attachment I am looking for engineer who is expert at circuit, pcb design, power electronics and PIC programming. (8 bit PIC,MPLAB X IDE, Proteus) short explanation for Project; 230VAC/24VDC rectifier. Input 230VAC, 50 voltage 24VDC, max output current 25 Amper. İt will also charge two battery 12V+12V: 24V , 26Ah, charging methods must be two type. Normal and fast charging. (cc/cv method). There must be GLCD to Show values and change some parameters. Expecting stability for output values. Details is in attachment. I am expect to; Expert about components Choose known components in the market (digikey etc) Optimum price/performance Satisfying Description/explanation for circuit and codes, PCB

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    ...send a signal to a gate of a transistor to switch a 10-14V (Automotive) circuit. I expect about 50Watts maximum draw, because of the application, unfortunately I cannot use a nMOS directly as the grounds in the car are all common and permanent. The reason for using a MOSFET rather than a relay is I need fairly high switching speed. I've looked at direct DC to DC SSRs and they are very pricey for what I need to do. The scope of what I need is: To have you select the most appropriate pMOSFET preferably with a datasheet and any related discrete components required. Then draw a circuit, (can be very basic) showing an Arduino or any 5V source going to a gate of the MOSFET, that will allow the FET to switch a 12v circuit on the positive rail. This is going int...

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    Topology for the CMOS ROIC have to be have to employ GMI (Gate Modulated Input) topology for the system design. HgCdTe photodiodes along with circuit simulators will be designed for the detector model. All the detector information required for the ROIC design can be put in to the circuit model, e.g., the dark current, photocurrent, zero bias dynamic resistance, peak dynamic resistance, junction capacitance, etc

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    Design a small PCB to convert input signals of +/-12V for the analog input pins of the Arduino Nano. Signal inputs: - Vin1, -12 V to +12V (<<25mA) - Vin2, -12 V to +12V (<<25mA) - Vin3, 0 V to +12V (<<25mA) - GND Signal output (for Arduino analog inputs, internal resistance ~100MOhm): - Vout1, 0 to 5V (max current 1mA) - Vout2, 0 to 5V (max current 1mA) - Vout3, 0 to 5V (max current 1mA) - GND Power supply inputs: - +15V - -15V - GND Other constraints: - Max PCB size 50 mm x 50 mm x 20mm - Use small terminal blocks e.g. similar to Phoenix Contact 1725672 - At least two through holes 3.4mm for mounting - Voltage limitation 5V on the outputs - Inputs and outputs labeled (if sufficient space :-) - Additional label: LNF #9t4Z - I want to order the assembled PCB at ...

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    I have a ready circuit of IR blaster which includes Eso32 as a wifi module. I want someone who can write a program that can fetch the ACs IR data from database and control the AC. You have to find out IR library that will work with almost all ACs

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    Hello, I need a electrical engineer for a project for my solar powered garden lamp. A small solar panel, a circuit that turns the light on in the night, everything powered by a AA battery.

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    ...system for communication. EEPROM is used to store system data. LEDs are used for status indication. As wireless IOT device it should operate on battery for communication. SMPS power supply for powering the system. You can find the attachment for more details of requirement. Skills required: - Understanding of embedded system - STM32 microcontroller - Component selection - Power Circuit design / Schematic design - PCB design - RF understanding - Analog/Digital signal understanding - Board bringup firmware with STMcube IDE...

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