Circuit Design Jobs

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Fixed-Price - Expert ($$$) - Est. Budget: $35 - Posted
PFA. Circuit diagram and switching table of IGBT. Desired output: 49 voltage steps sine wave (49 steps means 24 positive levels, 24 negative levels and 1 zero level, this 49 levels makes 1/2 part of whole cycle), THD & FFT response of output waveform
Skills: Circuit Design MATLAB Simulink
Fixed-Price - Intermediate ($$) - Est. Budget: $50 - Posted
Looking for an experienced front end developer to create a custom PCB. The scheme as well as the files will be provided. Any additional components which need to be purchased will be provided (or purchased by the freelancer and reimbursed). The design is for a basic smart watch and as such will need to be no larger than 1.5 inches by 1.5 inches. The clock uses a .96 inch OLED display, controller, buttons, and RTC. Please let me know if you have any questions. Thank you.
Skills: Circuit Design Arduino PCB Design
Fixed-Price - Intermediate ($$) - Est. Budget: $500 - Posted
I need someone who can replicate the attached FPCB with a IC. The IC has a simple function so it shouldn't be to hard to create. I have the Gerber files of the board. I also have the board. This board will be put into a controller which has roughly 20 buttons on it. I want to add extra tact switches to this controller which is what this FPCB is for. The tact switches are connected to the FPCB board via M1 M2 M3 M4 (see picture). The 37 conductive points connect to the controller so that we are able to re route all of the buttons from the controller through the IC to the M1 - M4 points. The function of the IC: 1) The board has 37 conductive points as you can see from picture. 2) 5 or 6 of them points are for ground. 3) The rest are button functions. eg Button 1, Button 2, B3, B4, etc.. 4) M1, M2, M3, and M4 on the board will be connected to external tact switches. when i hold down tact switch for 10 seconds along with another button on the controller, tact switch becomes that button. eg, if i hold down button 5 on the controller with M1 tact switch, M1 tact switch becomes button 5. The LED then lights to notify the user of the change. I have the gerber files of the board without the IC which i will need adapted slightly. I also need to add the IC and the software for the IC. Ps i hope ive described that well enough. Any questions are welcome.
Skills: Circuit Design Electrical Drawing Electrical engineering Electronic Design
Fixed-Price - Intermediate ($$) - Est. Budget: $5 - Posted
I need a breadboard I can take and get manufactured that combines the below devices. Smallest size possible is the goal. It also needs to be able to take 12 v. in and run a 12v solenoid valve and 5v flowmeter that has an interrupt. 1. Arduino Nano https://www.arduino.cc/en/Main/ArduinoBoardNano 2. Wiznet W1500 Shield http://www.gravitech.us/etwmiadforar.html 3. Custom Pieces for Solenoid and Flowmeter (Pink lines represent flowmeter and solenoid connections) https://123d.circuits.io/circuits/2179802-smart-tap/embed#breadboard
Skills: Circuit Design Arduino Electrical Drawing Electrical engineering
Fixed-Price - Intermediate ($$) - Est. Budget: $1,000 - Posted
We are looking for a engineer or electronic expert to create a small device that needs to work with remote signals. I will be able to give more info when I can see some examples of work etc. We want to create a working model and then we will look at manufacturing options. Basic functions of device. Small - key ring Able to charge via usb or any other clever way. Must be able to communicate with the user through a light and sound. for example light flashes when it needs to recharge or a sound signal when it gets activated. Budget is at this stage not set, we are looking at affordability but quality cannot be compromised so please give us a good overview of your previous work and show us examples. All the best Ian
Skills: Circuit Design Electronics
Fixed-Price - Intermediate ($$) - Est. Budget: $200 - Posted
I need PCB and Circuit Designing for My Project, I don't have much knowledge about electronic we are mechanical engineers, bid this project if you are good with any particular microcontroller
Skills: Circuit Design PCB Design
Fixed-Price - Intermediate ($$) - Est. Budget: $10 - Posted
1. around 300 words, 2. theme is about solutions to solve the problems in pcb designing or PCB assembly, it should list the common problems in pcb design OR PCB Assembly, and measures to solve or avoid them 3, each article should include 3 pictures to better explain the subject pictures should not be download from web, should be your own PCB layout picture or other pcb picture, it can be just a screenshot which helps explain what you want to say 4. it should have a proper title. 5. 100% pass copyscape. http://copyscape.com/ If you have much experience in PCB design or assembly, welcome.
  • Number of freelancers needed: 10
Skills: Circuit Design Electrical engineering PCB Design
Fixed-Price - Intermediate ($$) - Est. Budget: $200 - Posted
Seeking an Engineer to prototype a battery-powered, Arduino-based Bluetooth Keyboard Foot Pedal that pairs to a computer or mobile device and sends the letter [J] when pressed. The user has to press [J] when his hands are full, so a footswitch would make life easier. User would switch on the pedal, pair it with his laptop or phone, then press the pedal each time he wants to send a [J]. Project largely involves following this tutorial, but enclosing the Bluefruit from view: https://learn.adafruit.com/bluefruit-bluetooth-wireless-foot-pedal-switch Desired Milestones - Engineer completes non-disclosure and assumes no ownership over schematic or product - Engineer submits schematic / circuit diagram to Client along with simple description of function - Engineer submits list of parts (x2) needed to Client; Client orders/ships parts to Engineer - Engineer produces single prototype (for keeping); shares video of functioning pedal with Client - Engineer produces a second prototype (for sending to Client); ships to Client - Client confirms function of pedal Bonus Milestone If the Engineer can detect a long-press (hold for 1 second?) of the pedal and send the [Spacebar] key instead of the [J] key, this would allow the switch to perform two functions. Notes I am not the expert, but I assume something like this pedal https://chicagodist.com/products/foot-switch would connect to a box containing http://www.amazon.com/Bluefruit-EZ-Key-Bluetooth-Controller-Industries/dp/B018A2SV00 and a battery, with an on/off switch and a Bluetooth pairing button. The pedal would ideally butt-up against the circuit box to appear as one unit, but may also be separated by a few inches of the pedal cable. The circuitry should be enclosed (not visible to user).
Skills: Circuit Design Arduino Bluetooth Electrical engineering
Fixed-Price - Intermediate ($$) - Est. Budget: $1,000 - Posted
Motor: 15 V, 2 A. Rechargeable batterie: 4 x 3,7 V @ 2000 mAh, connected serially (= 14,8 V) IC board requirements: - on off push button (with status) - touch button for increasing from low, medium to high rpm (via PWM) - Battery charging, plug for external 18 V / 1 A adapter - touch button for increasing timer from 5 to 10 minutes and periodical mode (every 15 min.) - position hall sensor (at switch off, device should always stop at zero position) - wireless remote control (minimalistic ic board on 2 x 5 cm, with 3 V battery cells and two push buttons for speed and time increase) - LED for low battery alert - Speaker for low batt, alert, as well as button push confirmation - µ-processor programmable in higher level (e.g. C). - max size of ic board: 5 x 6 cm. Required: 1 working prototype (without case design), program code, schematics, layout (ic board and remote control)
Skills: Circuit Design Electrical engineering PCB Design