Circuit Design Jobs

Hi, I am looking for an expert engineer in the field of Buck/Boost converters. Need to review a buck/boost converter design based on the TI SM72442 MPPT IC.

Need to review a buck/boost converter design based on the TI SM72442 MPPT IC. The prototype is built but the MPPT IC is not working properly, need to spot what may be the error in design.

we are in need of a PCB designer and assembler , we prefer that the prototype will be assembled in china , so if you are bidding for the job , and do not live in china you need to have your arrangement with some that will assemble the prototype , we do not pay for design only , payment will be done after prototype is tested on location in china...

I need an expert in QMK software, I have already worked on the pcb design.

Antminer S17 series Hashboard schematic and ASIC repair guide needed . Voltage check points or frequency check any other related information and software for their PIC programming. Please kindly bid if you have experience with bitmain hashboard repair.

I have a LIN Slave controller project to drive a DC motor using Microchip Automotive Networking Development board ([login to view URL]) with PIC18F66K80 ([login to view URL]) MCU. Is this something you can do? Thank you.

Hello, We have a completed project that we need an electrical engineer to review and select correct parts as listed by the manufacture. I will provide the BOM, Gerber, schematics,

I need a person to design a small pcb for ESP8266 in Easy EDA Details as below, - 8 digital input to ESP8266 should be wired to screw terminal -5 digital output to be wired to 12 volt relay 3 do to be wired to screw terminal 1 analog input to be wired to screw terminal proper voltage deviders to be used

I need project Assistance about Touch Board(Bare Conductive ) and Multiplexer (Mux Shield II) expert for my project Assistance

I need project Assistance about Touch Board(Bare Conductive ) and Multiplexer (Mux Shield II) expert for my project Assistance

Attached is the project brief. Looking for someone to design the circuit, PCB and firmware for an ultrasonic measuring tool. The product measures distancing using ultrasonic sensors (want to build our own circuit for this, not off the shelf components) and has quad 7 segment displays for displaying the measurements, wireless TX and RX boards for remote operation, user input via buttons etc. Th...

Hi I would like to build a very small induction heating system that has a build-in some features: 1) must work with 5V 3A+ 2) must have a thermocoule that will measure the temperature of the heating element 3) must have controls for setting max temperature and turn off induction when temperature is reached 4) must turn on when heated element is cooled by 10 degrees (basically keep the heated elem...

Be sure you understand all details. PCB design for Solar panel 21V to charge Litio 3.7V battery. -PCB 2 layers -PCB shape will be provided in KiCAD -PCB dimensions less than 90x90mm For now I have one circuit done in KiCAD but there is something that not working properly. Now 4.2V is provided as output but when we connect the battery doesn't reach more than the battery voltage. Project ci...

Does anyone has the experience to make a DIY Powerwall (suitable for Power output 2000W) using 18650 lithium ion cells? I want to make this one for my house and ready to pay for that effort. The idea is to make the Powerbank and be compatible with any commercially available inverter in India. Following items are also required to give you an idea : Amass XT60PW Plug Connector XT60 20PCS Pitch 2.5...

Hello freelancers, I Need a complete design of a smartphone motherboard that work with several components. I need design, populate and deliver a working motherboard

Hello freelancers, I Need a complete design of a smartphone motherboard that work with several components.

i will create a schematic diagram of your electrical wiring to manage the safety of your homes, work place especially your family, friends and other people that you love.

I need an expert in QMK software, I have already worked on the pcb design.

Hello everybody, I posted this project yesterday and it was general now I want to give the specification: I have designed the PCB using Altium design and manufactured the PCB, so I’m looking for someone who can assist me in the development of the firmware of a battery bank using CCGP3PA IC and the southchip buck/boost. 1) firmware development (C/C++, I2C) 2) PCB design knowledge is a must i...

We have ready controller board design and not completed schematic, we need: 1) Make some pcb design changes 2) Finish schematic 3) Send us all files including BOM Changes list: [login to view URL] Files: [login to view URL]

Looking for a part time resource for IoT device design and development. 80 hrs a month: Knowledge of/Experience in: - ElectricImp - Squirrel ([login to view URL]) - IoT device design - Smart water and electricity metering (Modbus & Pulse) - Asset monitoring and tracking - Event based triggers. - SigFox, LoRaWan

We are developing ESP32 based device, at the moment we have working prototypes using several microcontrollers (ESP32, accelerometer, SD card slot, RTC, GPS + battery and solar panel) and the idea is to transfer this project to one PCB. We are happy to hear from you!

We're seeking someone to modify an existing PCB design to fit in a smaller form factor.

we are looking for an expert in PCB board prototype to build our board from our design and parts and test with us we prefer a builder from China since our parts are there

We are part of a US based electric vehicle manufacturing company in Ohio and Michigan. We have developed a family of small cars and trucks in the US Low Speed Vehicle market. We have not started production due to lack of funding. We are updating our Bill of Materials and need to get quotes on wiring harness and battery cables. Our EV's are very simple but we use many parts from other compa...

I need to have a digital stop watch to be able to disconnect the 2 magnetic pieces

I need an RF High Power Amplifier design PCB for WiFi band. The saturation output must be of 75 to 100 Watts. You can start through simple transistor amplifier diagrams and then evolve into the simulations. I work with the NI Multisim and Ultiboard environment, so will need circuit schematic as well as Gerber file. More details will be disclosed later.

Looking for an electrical engineer to upgrade my current PCB board with Wi-Fi and Bluetooth connectivity and an app that can collect the data when paired with the device, plus push notifications to a created list of people who need to know when an alarm event.

I have a gerber eagle circuit card file which I have about 6 terminals I need to change numbering as well as modify the frame descriptions on 20 sheets. Need someone with good Eagle experience to help

Modelling of VLSI modules using signal transition graph

INPUT RANGE IS 350 VAC TO 500 VAC , 50 HZ. OUTPUT : 24 VDC @ 5.0 AMPS. ISOLATED. ISOLATION VOLTAGE 2500 VRMS. WHAT'S NEEDED : SCHEMATIC , BOM , TRANSFORMER AND ANY OTHER MAGENTICS DESIGN AND REVIEW OF THE PCB DESIGNED BY US .

looking for expert electrical guy for very small job more details in chat

I am using an MCP3424 ADC in a project (a simple Arduino shield), and see it fail more often than I would like it to. I would like someone to take a look at my schematics and PCB design, and check that there are no obvious errors that could lead to the ADC chip being damaged. I have some suspicions that the problem could be related to either ESD damage or spikes on the power rail, but don't k...

I'm looking for advice on how to safely power 3v LED tape with 3.7v LIPO batteries for a portable signage project. Understanding of current regulators, charging circuits, PCB manufacture etc. all beneficial!

Pcb design in gerber format, using easyeda website

should know how to use multisim and read ll the questions carefully in the attached file PASSWORD FOR FILE OPENING IS AC_Summer19

Looking to design a circuit of IGBT based static voltage controller of 6 kva single phase 20 ms correction.

build an advanced 3d imaging device must be expert

We are looking for PCB designer who can develop board for IoT gateway

Design of a DC microgrid with emphasis on bidirectional converter connected to energy storage system

Have everything done, Just looking for someone to make the final PCB off my schematic

I need an Electronics & Electrical Engineer expert in negative feedback control systems

I need a licensed electrical engineer who can provide a line diagram of the 120/240v service for twelve car charges. What would be your price.

I need Electrical Engineer to provide Electrical layout for part of a House.

Raspberry Pi Compute Module 3+ Schematic Board : Specifications : 2 CAN inputs via MCP2515 (galvanic Insulated) (see example [login to view URL]) 8 Analog 5V Voltage Inputs via MCP3008 (+ Overvoltage protection) 8 Digital Inputs for 12V to GPIO (3.3V) ( Opto Coupler for protection ?) 1x 12V Permanet Input 1x 12V Switched input 1x Ground Input (Power Supply) 1x 3.3V output 1x SDA output 2xSDL...

I'm looking for a bright electrical engineer that can design a powerful but efficient flashlight driver/step-up convertor that can be controlled using PWM. Voltage input is 14.8v Two types of Cree LEDs with different voltages (12v and 72v) PWM control input (on/off, dim, strobe) Overheat protection, and any other protections will be good. PCB that hold all 5 LEDs (should be separated) 40mm-4...