User Tools

Site Tools


wcore_res-sd

This is an old revision of the document!


RES-SD module

This is a very simple board performing three functions:

  • SD card socket
  • Reset button
  • Indicator LEDs

Schematic

Connector J16E (SMT male header) carries 3v3 power and data signals for the SD card, along with the Reset and “LED” signals.

The Reset button has a damping capacitor.

The LEDs are connected through limiting resistors. The cathode pins are closest to the edge of the board.


BOM v1.0

Type Qty Value Package PartsMouserReicheltConradOtherNotes
Resistors
4 ~1k 5% THT R1-4 depends on LEDs
Capacitors
1 100n 1206 or THT C1
LEDs
4 Green 2*3*4 eBay
4 Orange 2*3*4 eBay
4 Red 2*3*4 eBay
4 Blue 2*3*4 eBay
Switch
1 tact low profile MJTP1117 700310-62
Headers
1 2*8 SMT male could use a longer strip
Sockets
1 SD SD-RSMT-2-MQ
Hardware
2 M3 Spacer 5mm(?)

Versions

v1.0: first release. Important! v1.0 boards have an error with the Reset switch. All boards should have one trace cut (shown in white), but it is required to bridge a pin with the adjacent mounting pin (as circled in red)

Assembly

The following build order is suggested:


License

Currently the design is © 2017 antilog devices with all rights reserved; all documentation is CC BY-NC-SA 3.0.

wcore_res-sd.1504815864.txt.gz · Last modified: 2017/09/07 20:24 by latigid_on