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Pcb Design Jobs

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Hourly - Est. Time: Less than 1 month, Less than 10 hrs/week - Posted
Background: As you likely already know, to control amount of power a flash puts out, flash duration (and hence light output) is reduced by a thyistor control that quenches the full power flash early for light output less then 100%. Requirement: Need a circuit to be designed (along with PCB design) which will register the flash quench duration (generated by the center pin on a DSLR flash connector) and converts it into a power output that can drive a bank of high speed LEDs. Either using purely discrete components or using an arduino (your choice whatever you think is simplest). If a micro-controller is used, I will need the code as well. The output of the circuit should be able to drive and control intensity (either PWM or otherwise depending on the LED driver driver used) of a bank of LEDs.
Hourly - Est. Time: Less than 1 week, Less than 10 hrs/week - Posted
i am looking of some onto convert some arduino code to c++ with chinos/rt based OS from arduino code, i also need you to do the opposite. adruino uses atmega chip the chinos/rt uses stm32f100 and the last thing is i need to do help add support for a device to one of the codes. the hardware is a wii nunchuck replacement pcbs made specifically for controlling an electric speed controller.it has been made because current wireless wii nunchucks are unstable and have bad wireless connectivity. the wiiceiver is a pcbs that was deigned to plug in a wireless nunchuck receiver in and output pwm signal for and electric speed controller and servo. i need to make the wiiceiver read the axis and button presses from my nunchuck pcb. but i want my nunchuck pcbs to stay comparable with arduino so i was going to allow support for stm32f103 and them release arduino code to the public. ardunio code: https://github.com/jaustindavid/wiiceiver chibios/rt code: https://github.com/vedderb/nunchuk_mod
Hourly - Est. Time: Less than 1 week, Less than 10 hrs/week - Posted
link to kicad project. https://drive.google.com/file/d/0Bym9XrdeViekWDZTSjZTRG1iTmM/view?usp=sharing hello , i have a project for you. this is an electric speed controller. this design is finished but i want to do 2 things to it. i want you to study it and design a way to join 2 together. i want you to join the positive and negative power inputs into the 1 and have them closer to the bottom of the pcbs. i want you to consolidate the parts so they share any parts that can be shared such as the voltage regulators usb and if possible the mcu. the second thing that i want you but is actually the priority, is do is make a second pcb using this current single pcb design and reduce it as much as possible. the current speed controller is made for 60v and rated for 100A i want to make one that is small and only rated to 10A at maybe 24v. the motor control ic that is currently used is the TI DRV8302 i want to replace that chip with the DVR8332 that has lower power ratings but also has...
Hourly - Est. Time: Less than 1 month, Less than 10 hrs/week - Posted
Im looking for someone to help build a small amplifier to go in a product that I build. Specs are as follow. - 15w x 2 RMS minimum - Bluetooth (with the ability to have custom pairing sound) - The ability to switch from stereo to mono and only power 1 speaker instead of two - Volume control connected to board by ribbon cable - 3.5mm audio input connected to board by ribbon cable - LED power (+-) on board screw down - Speaker left / right (+-) on board screw down - 12 V power (+-) on board screw down It would be a cool feature to be able to add or remove bluetooth capabilities to or from the board when needed.
Hourly - Est. Time: More than 6 months, Less than 10 hrs/week - Posted
We would like to create a long term relationship with a Embedded Engineer / Developer Mandatory Basic Skills: - Arduino Development or Arduino like MicroControllers & MicroProcessors - ESP8266 AT Commands - TCP/TLS/SSL and WiFi - MQTT - I2C - JSON Nice to Have: - ESP8266 SDK Knowledge - Encryption / Cryptographic - PCB & Circuit Design - HyperCat and/or AllJoyn We have several projects to be developed in the course of the next 2 years, However for now this is a project on demand position that could lead to part/full time position. Thank you
Hourly - Est. Time: Less than 1 month, Less than 10 hrs/week - Posted
We are a business selling USB microphones. We've run into a few quality issues lately, and are interested in exploring the idea of creating our own chipset which we can then use in different microphone housing. Ideally the end-result will give us more consistent quality and a design that belongs to us and not the factory. Open to suggestions on how this might work. Ideally for a fixed fee, but this advert is just to gauge interest.
Hourly - Est. Time: Less than 1 week, 10-30 hrs/week - Posted
We are a large company that are looking for an expert to review and improve existing Buck DC/DC electronic design. The goal is to design a Buck DC/DC converter with low heat losses, acceptable cost, small footprint and low ripple. We are currently using a working design that needs the improvement here mentioned and we do need a very experienced engineer in power electronics. Details: Max operating voltage: 100V Max operating current: 15A Max operating power: 350W. The actual second DC side is a dump resistor of 1ohm. This is a work for an Advanced engineer with experience in power conversion. For more details, please feel free to contact me
Hourly - Est. Time: Less than 1 week, Less than 10 hrs/week - Posted
I have a project that is using an intel Edison Arduino breakout board and Arduino Uno. I need it miniaturized on it's own PCB and micro-controller. The Arduino has 2 servos attached to it so I need something to make sure they work well too. If you know a better way to make this that doesn't involve Fritzing I am open to listening to your solution.