Electrical Engineering Jobs

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Fixed-Price - Expert ($$$) - Est. Budget: $2,500 - Posted
Hello, I am looking to fabricate a "Fiber Optic Brush", under the principle using the "Anderson Affect" to create a 3-D image. I have the Concept. I have the basic hardware needed. I have the basic science to present to an engineer. I have journals and articles showing proof of concept. Now I need someone with the expertise who can actually build it/ design it/spec it out? Dr Bonin
Skills: Electrical engineering Electronic Design
Fixed-Price - Intermediate ($$) - Est. Budget: $100 - Posted
I have a nrf51822 ble module in hand and I have started programming for it but I am stuck in following areas. Application requirement: there is an Ionic application that needs to be in sync with the nrf51 module. nrf51x is using arduino ide ( so no mBED coding). from cellphone side, I need to send some control commands ( which I am sending no issue), and then nrf51x is processing the commands and it need to return some logs( lots of information! ) . nrf51x is also connected to these : External RTC ( which is working fine, but if you know how to enable the internal RTC module that is a plus), i2C oLED and also some push buttons that give interrupt to nrf51x! issues I am facing now: 1- I need nrf51x do his loop functions ( whatever it suppose to do) , when the packet came from the cellphone app, it receive the information and also sends a long log to the cellphone ! then does the loop function again! something like if a packet comes, an interrupt comes and in the routine of the interrupt the nrf51x sends long log to the cellphone. 2- I have a SPI microSD flash card that is not working with the nrf51x , I need to drive that one as well, just a simple read and write is enough. 3- I noticed that my external RTC module is working fine, also my push button interrupt is also working fine , but when I have a code containing both, some times the interrupt does not work! I dont know why! so requirement here is if you know how to use the internal RTC and also add 3 pin interrupt that work all the time that satisfies my requirement. 2- I need some help with sending nrf51x into low power mode that is just sensitive to external interrupts and also bluetooth received packets interrupts. I need someone who has worked with the redbear nrf5x boards before and have done this type of programming, cause starting from the scratch might be very painful. Thanks
Skills: Electrical engineering Arduino Bluetooth Embedded Systems
Fixed-Price - Intermediate ($$) - Est. Budget: $100 - Posted
We are a start-up working on building true wireless earbuds with a capsule that charges the earbuds wirelessly. At this stage of the development we have all the engineering docs of the product but more improvement is required, on the charging system and a few other things so we are able to start the mass-production. We are looking to hire Electrical engineer to work with our team to fix the charging issue and a few other things. more details will be shared after we hire. What needs to be done: Fixing the earbuds and the capsule charging issues PCB, firmware and BOM analysis Play and stop button issue Technical Documentations More details will be shared after we hire. Thank you
Skills: Electrical engineering Altium Designer Circuit Design Digital Electronics
Fixed-Price - Intermediate ($$) - Est. Budget: $600 - Posted
I need engineered MEP plans for a 3,000SF Office Remodeling project in Stafford, Texas. I do not have access to the original building plans but architectural layout (existing & proposed) can be provided to you in Revit 2017 (or in .dwg format). One major change in the layout that needs specific attention, is the addition of the two restrooms behind the existing kitchen wall. I need to ensure that the plumbing for the restrooms can be connected to the existing kitchen plumbing. Attached: Preliminary plans attached
Skills: Electrical engineering Mechanical Engineering Plumbing
Fixed-Price - Intermediate ($$) - Est. Budget: $250 - Posted
Looking for a person to finish a design a 4-axis stepper controller with Raspberry PI 3. This is used to control a large stepper with typical current >1A per axis. A separate drive (commercially purchased or designed one) for stepper can be used. The function for stepper will be bi-directional continuous move at selected speed, bi-directional fixed step movement as fine as 1 step/microstep. A blue tooth based remote controller (continuous job, step, speed selection, buttons) also need to be designed in such way that it will be able to be power up with 2 AA battery for 6+ month with occasional use per day. The current selection is oriental motor's open frame drive board. So the RPI3 will only need to generate pulse train. But the final selection of the motor and drive will be determined with contractor and mechanical requirement. The deliverable: specification all purchased parts and its vendor all design for any designed parts any code used help constructing a prototyping wiring instruction remote controller design and code power consumption estimate on remote controller range estimate on remote controller
Skills: Electrical engineering Bluetooth Raspberry Pi