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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 | Parts | Mouser | Reichelt | Conrad | Other | Notes |
---|---|---|---|---|---|---|---|---|---|
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 | SMTmale | 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.