Looking for someone with experience in PCB design and ordering of assembled PCBs (e.g., from 4pcb).
I'm a grad student working in optics and am using an LED array to do "Fourier Ptychography" (an imaging technique that allows for simultaneous high resolution and high field of view imaging). My group has been using LED arrays like these from Adafruit (https://www.adafruit.com/products/1487, https://www.adafruit.com/products/2026) but we'd really like to use an array with closer LED spacing and brighter LEDs.
My original plan was to modify the schematics/board files myself and have someone proof it before sending it to Colorado (or wherever) for fabrication/assembly, but after some thought I think it would be better just to hire someone to do the modification/proofing end-to-end (I don't trust myself not to make a mistake somewhere).
Anyways, what I would like done is:
1. Modify the attached schematic files (Adafruit_NeoMatrix_8x8 v2.sch) by replacing the current LED's (WS2812/SK6812; they actually have a built-in controller IC as well) with the smaller form-factor SK6812mini.
I have attached a library that has the footprint of the SK6812mini already included which you are welcome to use (pimoroni-optoelectronics.lbr). If you prefer to draw up your own part based on the specs, they are attached as well (SK6812MINI_REV.01-1-2.pdf).
2. Modify the board layout (Adafruit_NeoMatrix_8x8 v2.brd) to pack the LEDs as closely as possible. Ideally I would like something spaced at around 4.0mm or less, but if that's not possible (I realize that the SK6812mini is already 3.5mmx3.7mm), please try to get the spacing as close to 4.0mm as possible (spacing needs to be uniform for this project but perhaps not for future ones).
3. Deliverables are: schematic/board files, BOM, drill files. Basically I just want to be able to go to 4PCB (or some place) with the files and order materials and have them fabricate/assemble the board.
**If you can do fabrication/assembly yourself I would be willing to pay extra for that as well.
**Also, in addition to financial compensation, I would be happy to put your name on any publications of mine that end up using this device.
**If this project goes well, I would probably love to get your help again for designing other LED array layouts (e.g., more rows/columns, or unequal spacing between LEDs).