PCB Design Engineer (Arduino Prototype -> PCB)
I need an experienced PCB design engineer to help me take an Arduino prototype of a wearable electronic and turn it into a PCB CAD file. Then print three PCBs and populate them with components, test, and mail them to me.
[Note, I originally posted this job on Nov 16, 2014 (https://www.elance.com/job/64881837/proposals), but the work specification has changed slightly and there are more details. If you applied last time, please apply again to let me know you're still available and your cost for the project.]
An ideal candidate is someone who has worked with Arduino, and has extensive experience designing and printing PCBs for prototyping purposes.
I have a functional hand-soldered Arduino prototype that fits in the palm of your hand. It consists of an Adafruit Pro Trinket (3V), Adafruit's USB LiPoly Charging Module, LiPo battery, 7 RGB LEDS, 4 tactile buttons, a vibrating motor, a piezo buzzer, a vibration sensor, and a temperature sensor. I've already written the software that runs the device.
I will send you photos of the prototype and hand-drawn diagrams of the circuitry I've soldered and assembled. I want you to use a CAD program (eg. Eagle) to recreate the circuitry in a printable PCB using all surface mounted components (SMD).
You will need to guide me on selecting surface-mount components that will do the equivalent of my current through-hole components. You should be experienced in part selection so you can choose affordable parts for commercial production.
The major modules I'm using (Adafruit Pro Trinket 3V and the Adafruit USB LiPoly Charging Module) are open source, so 80% of the circuitry is already available directly for download; you'll primarily be merging these onto one board and then adding connections to the sensors/outputs I've designed into the device.
1) A computer drawing of what I want the board layout to look like.
2) A spreadsheet that gives details on each of the components on the drawing
3) Some photos of the hand-soldered prototype so you can get a rough idea of what it is (note the hand-soldered prototype doesn't look like the final version I need).
4) Eagle files for the open-source Adafruit Pro Trinket and USB Charging Backpack
To summarize, you'll deliver the following:
1) A CAD file (eg. Eagle) of the PCB you've designed.
2) Three populated and tested boards.
If you're the right candidate, our workflow will look something like this:
1) We'll start with a phone call to review the files I've attached.
2) You'll come up with a preliminary SMD part list. We'll do a call or email to discuss these.
3) You'll complete the board design and email to me for review.
4) You'll have the boards printed and populate them with the SMD components, and then mail them to me.
Because the board you are building will be used in prototyping, after you complete this job, I expect I will want to improve and modify the board later (adding more functionality and components, for example). If working with you is a pleasure (as I expect it will be!), I will happily re-hire you for those jobs as separate work items.
That should be it. I apologize for re-posting this job, since I had posted it when the project was just a little different (https://www.elance.com/job/64881837/proposals). If you applied last time, please apply again to let me know you're still available and your cost for the project.