I’m taking on the effort of hand building two spark cores and I have all of the parts sourced from Digikey except for the following 4 parts. If you could help me with a more equivalent US part that would be great!
Chip Antenna 2.4GHz, Ceramic 8mm x 1mm A1 ACX “US PN = 2500AT44M0400E
Asia PN = AT8010-E2R9HAA”
RGB LED 3528 RGB LED 3528 LED2 Wenliang WLRGB3528C/R
RTC Crystal 32.768KHz, 12.5pF RTC Crystal 2-SMD Y1 Song Ji SJFC1332K12P20
USB Micro B Connector USB Micro B, SMT with TH Board Guides USB-MICROB X1 Kaweei CMCUSB-5BFM2G-01-D
At one point I could get the chip antenna from Mouser, but I waited too long and now they are all gone… you guys probably bought them all up! My fall back plan is to use the uFL connector, but it’s not my first choice to keep it a simple build and test.
I ordered my v0.2 PCBs from OSHPark so it’s been taking a while, but they should be here any day now!
I think the first part I’m going to try and solder down is the Wifi module. I’m going to preheat the board a little and use solder paste and hot air… hope it works! I’m probably building a $31.80 brick, but it should be fun and with little luck I’ll have something working.
I’ll be sure to post updates here as I have them, and will post my BOM as well.