Lets open Kicad and start with the schematic with Eeschema:<\/p>\n Then PCB new for the board layout:<\/p>\n MicroSD footprint and module for Kicad: microSD_Card<\/a><\/p>\n Let’s submit the gerber files to, you can order the board here (shared project): OSH Park<\/a><\/p>\n That was my fastest board made ever, 1h30 from searching the pinout to the confirmation email!<\/p>\n See you back in few week for the oven reflow test!<\/p>\n Update: the board and the reflow!<\/p>\n Houston, we have a reflow!<\/p>\n Then time to test: lets scavenge a super cheap reader microSD card reader:<\/p>\n And plug it: IT WORKS! After 3 min under the IR station, it does work.<\/p>\n I think I’ve to increase the pad size, in order to maximize the solder paste.<\/p>\n Now I’m confident sending to production, as I’ve quite a lot of theses cards in trays, ready for pick and place: Ever wanted to add a lot a flash memory to a small microcontroller? NOR flash or EEPROM are ok, but only for small size. For Gbit range, you need NAND, and with NAND comes CCR, LUT, wearleveling, etc… Furthermore, they … Continue reading ![\"\"](\"http:\/\/www.dotmana.com\/weblog\/wp-content\/uploads\/micro-sd-card.jpg\" "\\"micro-sd-card\\"")
<\/a>Here is the pinout<\/p>\n<\/a>Then let’s create a small board, to try the reflow of a micro SD card and give access with some 2.54mm header.<\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a>Total including USPS post mail: 4.10\u20ac<\/p>\n<\/a>First, let’s clean it and apply some flux:<\/p>\n<\/a>Then some solder on the pads, and flux again:<\/p>\n<\/a>Time to turn the heating plate and IR reflow on:<\/p>\n<\/a>Just stir it a bit while it’s hot:<\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"