Circuit Design Jobs

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Fixed-Price - Entry Level ($) - Est. Budget: $50 - Posted
In altium, layout a board. Overall, should be 100mm x 90mm. The 100mm board width is key parameter. length is slightly flexible. The board uses a Sparkfun brand Arduino Pro Micro - 5V/16MHz (P/N DEV-12640) to control a stepper motor driver, a piezo buzzer, and two relays (1. '510 relay,' controls a 30v buck; 2. 'valve relay,' controls a 12v solenoid valve), . board connections and key components: -stepper driver (no part number - not on board) - arduino D2, D3, D4 and GR should connect to STP/DIR/ENA/GR of stepper driver via 8-pin plug receptacle -510 relay (P/N G5NB-1A4-5VDC) - arduino D5+GR -valve relay (P/N G6L-1P 5VDC) - arduino D6+GR -piezo (P/N PT-3529PQ) - arduino D7+GR -8-pin plug receptacle (P/N 20020110-H081A01LF) connects 4X stepper driver leads (step, dir, ena, ground), 2X 12v solenoid valve power leads, and 2X 30v buck output power leads. ***plug receptacle should be centered on the board's 100mm axis and overhang the board edge by ~5mm.*** -4-pin screw terminal block (P/N 20020316-H041B01LF) connects 2X 12v power leads and +/- 30v power leads. please check attached gerbers for reference design. reference design was using an arduino uno. need this done in 24 hours or less. deliverables are schematic, altium/eagle files, gerbers.
Skills: Circuit Design Altium Designer Arduino Eagle
Hourly - Intermediate ($$) - Est. Time: Less than 1 week, Less than 10 hrs/week - Posted
I am looking to power several devices using one power source rather than one power adapter per device (which in case of digital cameras seems to be the only option). I need a schematic so I can build a PCB which would allow me to plug in several (e.g. up to 6) devices at once but making sure I don't blow up anything if not all outputs are used (like my current setup, which obviously failed). Possible specs are 6 outputs of 8VDC @ 2A each, protected against over-voltage and over-current to protect camera equipment. Current cameras I'm using are Nikon D3300, in case you need to look up existing power supplies or battery solutions. Also perhaps Nikon D810. Depending on the complexity I may also have you design the PCB.
Skills: Circuit Design Electronics PCB Design
Fixed-Price - Intermediate ($$) - Est. Budget: $500 - Posted
Hello, I am working on a new type of interactive toy that records 5-10 seconds of audio (ex. human speech) and then sings the recorded back in a variety of musical styles (rap, jazz. etc.). The toy must also be able to add random words and phrases to the pre-recorded text, such as "cool", "I love it", etc. Previous experience in circuit design, software & hardware to record and process sound is required. Contact me for more details.
Skills: Circuit Design Audio Engineering Electronic Design Embedded Systems
Hourly - Intermediate ($$) - Est. Time: Less than 1 month, Less than 10 hrs/week - Posted
I want to make a wearable device that would have a microphone that would pick up speech and send the audio via bluetooth to a speech to text iphone app I have already completed. Then the app would send the text message generated to a screen on the wearable device. Am thinking either Arduino or Rasberry Pi (or something better?)
Skills: Circuit Design Arduino Electronics iPhone UI Design
Hourly - Expert ($$$) - Est. Time: 3 to 6 months, 10-30 hrs/week - Posted
Someone who understands electronics enough to design circuit and schematic capture. I will need someone to transfer my schematic from a pdf to Altium or EagleCAD. I do not have time to do it myself. Job will require you to not only to draw schematic in a pcb software, but also create footprint of components that are not already in an existing library and detect any errors. Skills needed are knowledge of circuit design, layout design, and electronics in general. I will have schematic, BOM, and datasheets for completion of job. Additional key words: STM32, component selection, power and signal integrity, embedded hardware, firmware, integrated circuit, Lipo battery management IC, battery charging IC, IMU, wifi module, motor controller, video processing. The perfect candidate can easily transcribe schematic over to pcb design software and layout according to datasheet recommendations, but also suggest ways to reduce BOM, reduce PCB real estate, suggest components that may work better, etc. I need a team player who can stick around until prototype comes to life.
Skills: Circuit Design Electrical engineering Embedded Systems Microcontroller Programming
Fixed-Price - Intermediate ($$) - Est. Budget: $500 - Posted
Looking for an experienced Designer for designing Circuit, PCB and Working Prototyping for the following : 1) To monitor Temperature in Real Time for a Commercial Glass Door Frost Free Refrigerator 2) The number of Times the Door has been opened / closed 3) How long the door remained open 4) If the Refrigerator has been moved from the place it was installed on 5) Record the above with Date/Time stamp for each day. 6) Output of the Above Information to be collected in a Laptop/Tablet using Ethernet RJ45 Cable or USB Cable (or suggest any other way to collect the data) 7) Maintain Records for each Refrigerator assigning Unique Id to each Refrigerator. 8) A Simple interface program to collect the data from the device and display in Simple English / Mathematical Sheet.
Skills: Circuit Design PCB Design Product Design Product Development
Fixed-Price - Expert ($$$) - Est. Budget: $2,000 - Posted
Stop Voleur is a connected wearable which prevent the loss and the theft of smartphones. Hung to a watch, a bracelet, a bag or a jacket, Stop Voleur is connected via Bluetooth to your smartphone and triggers an alarm as soon as it is spirited away from you. The further you are, the louder the alarm is. Thus, in case of theft, the robber is forced to give up the phone and leave shamefully. In the event of loss or omission, you are immediately notified by the alarm and just have to pick up your favorite item.
Skills: Circuit Design 3D Printing Bluetooth Electrical engineering