Circuit Design Jobs

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Hourly - Expert ($$$) - Est. Time: Less than 1 week, 10-30 hrs/week - Posted
I am looking for a rock star electrical engineer who is familiar with the STM32F4 MCU family to review the Altium schematics files for our product. Your own designs must always work as expected the first time, and your review must ensure the same for our product. The schematics include 10-15 modules with around 20 distinct ICs and many discrete components. I would expect a skilled engineer could do a thorough review in 8-16 hours. I'm looking for someone who can do a more thorough review within 8 hours. I expect the review to be complete within 48 hours after we agree to terms on the job. I'm not interested in working with a project manager or a team. I would need a signed NDA before I can send the review materials.
Skills: Circuit Design Electrical engineering PCB Design
Hourly - Expert ($$$) - Est. Time: 1 to 3 months, 10-30 hrs/week - Posted
We are at the tail end of building the first Bluetooth controlled exercise weight machine. We are seeing some interference issues and stability issues. I'm looking for an RF engineer that has experience in the various methods of RF Signal transmission. If you have worked with RC controllers, Bluetooth, or Wifi on embedded systems, I'd like to get your help. It is our goal to build a reliable and fail safe system. Signal integrity and critical mission protocol would be ideal. Please let me know if you are interested. Check us out on www.flexlinefitness.com Long term opportunity is also available. -Brandon Chief Product Officer
Skills: Circuit Design PCB Design Serial Port Interfacing
Hourly - Intermediate ($$) - Est. Time: Less than 1 month, Less than 10 hrs/week - Posted
Need an experienced engineer to design a reliable circuit board to control a high-power LED using a custom lithium-ion 18650 battery pack. To be a commercial product. Will require features such as LED dimming, battery level indicator, and A/C adaptor. I also need some consulting to help work out battery specifications to have manufactured.
Skills: Circuit Design Electrical engineering Electronics
Hourly - Intermediate ($$) - Est. Time: Less than 1 week, 10-30 hrs/week - Posted
Looking for schematic design and firmware programming for a single-cell LiPo fuel gauge. The circuit should use a MAX1704 as per the attached circuit, connected to an ATtiny44 with which the MAX should communicate over SPI. One red LED and 4 green LEDs connected directly to 5 of the ATtiny outputs, and a pushbutton switch on one input. Pressing the pushbutton should show the battery charge status for about 5 seconds, then switch all LEDs off. On power-on the battery charge status should also be shown for 5 seconds.
Skills: Circuit Design Atmel AVR Embedded Systems
Hourly - Intermediate ($$) - Est. Time: More than 6 months, Less than 10 hrs/week - Posted
An exciting contract job has arisen for a gaming company based in London on an ongoing basis. The right candidate will be responsible for circuit design, prototyping and installations based on the concepts we provide. The ideal candidate will need to have a good understanding of Arduino, Raspberries and also designing circuitry layouts. When tendering for the project, please submit a few examples of the projects you have done previously.
Skills: Circuit Design Arduino Raspberry Pi
Hourly - Expert ($$$) - Est. Time: 1 to 3 months, 10-30 hrs/week - Posted
I’m working on creating a guitar pedal system that magnetically links together. A cross between a modular synth and a traditional set of guitar pedals. A base pedal that has various pedals that can snap on to the system. Instead of guitarists creating a mix-match board of various pedals and technologies (all with their own power supply and connecting cables mounted onto a separate board), they can connect together a set of pedals that all work and are designed to connect seamlessly together. A system that allows play and re-composing of order to create never-before-heard sounds. (Mainly analog with the occasional use of Midi for specific tasks like tempo setting.) Think little bits (http://littlebits.cc), but for guitar pedals. Think Moog Sonic Six (http://www.vintagesynth.com/moog/sonic6.php) as an actual set of independent, connected components on the floor (without the keyboard of course). I need an expert in circuit design (that might also love the audio and synthesizer world). Any expertise in circuit printing, production and assembly would be useful too. Probably start with the core base pedal and then a couple pedals that will prove out the concept. Just a single prototype needed for testing with the goal of larger production based on the business side of things. I have write-ups and concepts for each component​ when we get to that point in discussion.
Skills: Circuit Design Analog Electronics Audio Engineering PCB Design
Hourly - Entry Level ($) - Est. Time: Less than 1 month, 30+ hrs/week - Posted
I am looking for experienced embedded engineer who is able to think in terms of Arduino. Successful candidate should be hands-on PCB developer. Job is to develop custom module for AT90USB162 MCU. Arduino Pro Micro should be taken as basis, but in addition to MCU change, several additional features should be provided; for example, module should allow to use different power supply options. Delivery should include: -schematic diagram; -PCB layout; -module prototype (2 units should be delivered to Ukraine). Additional requirements will be discussed during interview
Skills: Circuit Design Arduino Atmel AVR Electronic Design
Hourly - Intermediate ($$) - Est. Time: 3 to 6 months, Less than 10 hrs/week - Posted
Our company designs and sells headset products for smartphones, office phones, USB, and more. We need technical assistance in creating wiring diagrams and engineering drawings for our factory and solving technical issues with our existing products. As we are continually creating new headset products, this could be an ongoing position. The right freelancer would be proficient in English and have experience in telecommunications products or consumer electronics.
Skills: Circuit Design Electronic Design Electronics PCB Design