Circuit Design Jobs

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Hourly - Expert ($$$) - Est. Time: Less than 1 week, 10-30 hrs/week - Posted
Looking for an engineer that can help design and source parts to build a very simple balanced to unbalanced audio converter PCB in a form factor that fits into a computer's PCI/PCI-E expansion slot. We need either someone who can perform the one time job of designing the device or someone who can design, manufacture, and assemble the device. Our MOQ expectation is fairly small (<100 pieces).
Skills: Circuit Design AutoCAD Electronic Design Electronics
Hourly - Intermediate ($$) - Est. Time: 3 to 6 months, 10-30 hrs/week - Posted
Hi all, I request your expertise for an interesting Hardware / Software project which could be scalable in a near future. I need 1 expert to set-up a prototype for internet connected speedometer and powermeter. It supposes to build necessary hardware with all relevent sensors to get all variables I am looking for: Watt, speed, distance, RPM. This device could be made of several parts, must be small enough to be fixed to crankset and handlebar. This device must communicated via Wifi to a server to aggregate data. There are several others requirement which could make this project interesting for you like mobile app dev. Hope to find an expert with whom I can discuss in details about this project Micro-controlled cycling speedometer / powermeter (IoT) 1. Functional requirement: Convert traditional indoor cycling fitness bikes into smart bikes to provide end-users with a new performance and sport experience. Vast majority of bikes used in these fitness classes are purely mechanical bikes missing embedded basic performance measurement and display.  It is expected to provide a cost-effective device easily configurable and mountable on indoor bikes which could measure speed, average speed (km/h), distance (km), rounds per minute (RPM), power and average power (watts).  It is expected to get a device which is user-dependent. o a QR code must be attributed to each bike. User must sign-in with a dedicated mobile application, where he could have registered beforehand all necessary information potentially needed for measurements (weight, height, age,…). o Following identification, bikes start transmitting parameters to server for performance measurement calculation. o Smartphone used for identification should display user’s performance information in live. o It’s not expected for the moment to work on UI.  It is expected to get 2 modes of use: individual and collective. o When collective mode activated (fitness class), all devices (bikes) should be connected under same independent session. All bikes are in the same room. o All data are transmitted to server for individual and collective performance display on the smartphone. o Ultimately, we would expect different display on the smartphone (individual) and collective via overhead projection (performance comparison between users, ranking,…)  Second step of development, once hardware and performance indicators are properly aggregated, stored and displayed, it must be considered that application should display historical data and historical comparisons between users of a same collective session. For your information, bike which should be used for the prototype would be like : Please let me know feasibility and a rough estimate. Of course, if we decide to work together we'll work on an iterative way. I am not expecting a final prototype just based on one conversation. We'll be able to set-up skype meeting and even be able to travel
Skills: Circuit Design Arduino Electrical engineering Microcontroller Programming
Hourly - Entry Level ($) - Est. Time: Less than 1 month, 10-30 hrs/week - Posted
I'm looking for someone to help me with the PCB designs that I'm working on. At first I would just want this person to help me with creation of schematic symbols and component footprints. If someone is able to do a good job with these things, then I may want to get help with getting actual layout help. We could start with me sending several datasheets for components that I need schematic symbols and footprints made for and go from there. I'm hoping to find someone who can support my electrical design work on an ongoing basis.
Skills: Circuit Design Electrical Drawing Electrical engineering PCB Design
Hourly - Intermediate ($$) - Est. Time: 3 to 6 months, Less than 10 hrs/week - Posted
Looking for Electronics/Hardware Engineer with experience in developing devices with Thunderbolt interface. PCB should have standard PCI-Express connector to handle PCI-Express cards, powered by 12V input and connected to PC with Thunderbolt port.
Skills: Circuit Design Electrical Drawing Electrical engineering Electronic Design
Hourly - Intermediate ($$) - Est. Time: Less than 1 month, 10-30 hrs/week - Posted
Looking to create a prototype for a Bluetooth based device that can be remotely controlled from a mobile app. You'll need to have a proven experience of creating a low voltage devices, be comfortable designing circuit boards and creating a prototype. Big plus if you created a similar integration between IoT (Internet of Things) and mobile apps. You will not need to create the mobile app but you'll need to work with the rest of the team to enable the platform which the will run the firmware. Do you enjoy working with Microcontrollers such as Arduino or Raspberry Pie? Then this project might be of interest to you.
Skills: Circuit Design Arduino Bluetooth Digital Signal Processing
Hourly - Expert ($$$) - Est. Time: Less than 1 month, 10-30 hrs/week - Posted
>> Overview This project involves the schematic design and PCB layout of the UI elements of an Arduino Mega controlled coffee machine. The UI elements consists of four sets of the following: a 3 digit 7 segment display, a 128x32 SSD1306 based OLED display, and a rotary encoder. >> Deliverables Step 1: A. Discuss I2C vs. SPI, and library choice (e.g. Pins required, refresh rate, memory usage) B. Clarify code implementation C. Calculate power consumption to help me size a power supply Step 2 A. Schematic in an image/pdf format B. Bill of materials C. Compilable example code for the Arduino IDE, using either Arduino Nano or Mega Step 3 A. PCB layout files, ready to send to board house. B. Source files (Eagle preferred, but not required) >> Components Please see attachment for the board layout, component footprints and links to datasheets. The “dashboard” consists of four sets of three elements each, with two sets on each PCB: 1. A three digit, common cathode 7 segment display 2. A 128x32 OLED display with SSD1306 driver 3. A incremental rotary encoder with a pushbutton, Bourns PEC With the exception of the above, surface mount components are preferred, and should all be on the same side of the board. I’ll most likely be hand assembling the boards, so layouts and component sizes that facilitates that would be appreciated. A ribbon cable connects the microcontroller board to PCB1, and a separate ribbon cable connects PCB1 and PCB2. If it makes more sense (/is better practice) to connect each PCB directly to the microcontroller PCB, then that’s fine too. >> Implementation notes These are all suggestions - I don’t know what I don’t know, so I’m open to your advice if there are better approaches. I’d like to prioritize robustness and doing it properly, rather than trying to minimize costs. Similarly, accompanying code should be easy to understand and maintain - the code will be open source, so please take advantage of open source libraries (i.e. ledcontrol, adafruit_ssd1306,adafruit_gfx, u8glib). The 7 segment displays could be driven by two MAX7219 (one per PCB, daisy chained), and controlled by the LedControl library. The OLED displays are packaged as a module. They are available as SPI or I2C versions. The i2c versions all have the same i2c address, so may need an i2c multiplexer (i.e. TCA9548A) /i2c address translator (LTC4316), or another alternative I’m not aware of. I need help deciding whether to go with I2C or SPI versions. They only need to display static text for now. The circuits for the rotary encoder should include hardware debouncing. The bourns datasheet includes a sample application circuit. I have no preference for whether it should be interrupt based, but if that provides better performance / reliability (and is the “proper way” to implement rotary encoders), then that’s fine too. >> Example Code The code should be packaged as a library. The library should (probably?) extend the existing OLED / 7 segment library functions so that they're addressable based on their location on the PCB (i.e. locations 0,1,2,3 from left to right). The example code should use this library to increment/decrement the value displayed on the 7 segment display using the corresponding rotary encoder. Pressing the button should toggle both the corresponding OLED and 7 segment display on and off.
Skills: Circuit Design Arduino PCB Design
Hourly - Intermediate ($$) - Est. Time: Less than 1 week, 10-30 hrs/week - Posted
Hi! I need to find someone to build an electronic circuit/ hardware gadget. I need a bicycle speedometer ,based on the timer 555 ( analog circuit design mainly). It will be the project for a Technical Summer camp and this will be the model and the report type that students will have to submit so it has to be perfect. Please shot me a message or email if you are interested and know how to do an amazing work!
Skills: Circuit Design Electronic Design Electronics Integrated Circuits
Hourly - Entry Level ($) - Est. Time: More than 6 months, 30+ hrs/week - Posted
We need someone who knows T1, EOC, Fiber, VoIP, POTS, DSL, Broadband, Fixed Wireless, CDMA, Dual WAN routers, SaaS, ITaas, DaaS and more. As a project manager. Someone who can solve these problems, but that understands how to use our vendors to solve the problems instead of solving them themselves. We are MSP's that sell many digital products to clients in a white label fashion. We are a stable company with all of our current employees with us for at least 1 year or more. Pay is determined after interview and skill assessment. We believe in paying lower than average during trial period, and then higher than average after trial period so that we get the right people and we keep them.
Skills: Circuit Design Business Analysis Business Development Business Management
Hourly - Intermediate ($$) - Est. Time: 3 to 6 months, Less than 10 hrs/week - Posted
Hello, I am looking for a developer who will work with us on a Part time basis through the next few months on developing the software as well as the circuit design for our LED Strip project. This project will consist of controlling individually addressed LEDs and creating a wearable using Arduino technologies at the start and then moving to cheaper and more economical Micro controllers for production.
Skills: Circuit Design Arduino Hardware Prototyping PCB Design