ET-C06
microSD Card Breakout
SPI microSD with regulator and 5 V-safe buffer
AED 23.00
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Overview
SPI microSD with regulator and 5 V-safe buffer
The ET-C06 is built around the microSD / SDHC / SDXC in SPI mode; push-push socket.
Designed in Dubai by ElectroTrical — the full schematic, BOM and design notes are published below.
Good for
- Data logging
- Audio and image storage
- Config files for projects
Key features
What makes it different
Card
microSD / SDHC / SDXC in SPI mode; push-push socket
Levels
74LVC125A buffers: works with 3.3V and 5V hosts; MISO tri-states when CS is high, so the SPI bus can be shared
Power
AP2112K 3.3V 600mA with 10µF bulk for write peaks
Libraries
Arduino SD / SdFat, CircuitPython sdcardio
Open documentation
Schematic, BOM and layout notes published for every board.
Breadboard friendly
Standard 2.54 mm pitch and M2.5 mounting holes.
Specifications
Technical specifications
| Card | microSD / SDHC / SDXC in SPI mode; push-push socket |
|---|---|
| Levels | 74LVC125A buffers: works with 3.3V and 5V hosts; MISO tri-states when CS is high, so the SPI bus can be shared |
| Power | AP2112K 3.3V 600mA with 10µF bulk for write peaks |
| Size | 25.4 × 25.4 mm |
|---|---|
| Mounting | 4 × M2.5 holes, 2.54 mm from each corner |
| Connectors | 7-pin 2.54 mm header |
| Main IC | 74LVC125APW,118 (LCSC C6059) |
| Revision | Rev A |
| Libraries | Arduino SD / SdFat, CircuitPython sdcardio |
|---|
Performance
SPI clock
Pinout
Pin map and connections
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VIN | Power | 3.3–5V |
| 2 | GND | Ground | Ground |
| 3 | 3V3 | Power | Regulator output |
| 4 | CLK | Signal | SPI SCK |
| 5 | MISO | SPI | SPI MISO (3.3V, tri-state) |
| 6 | MOSI | SPI | SPI MOSI |
| 7 | CS | SPI | Card select, active low |
Mechanical
Dimensions and what's in the box
In the box
- 1 × ET-C06 microSD Card Breakout (assembled)
- 1 × 7-pin 2.54 mm male header, unsoldered
Getting started
- Wire the header: VIN, GND, 3V3, CLK, MISO, MOSI
- Libraries: Arduino SD / SdFat, CircuitPython sdcardio
Compare
Storage
| microSD Card Breakout (this board)This board | ET-A10 Qwiic Proto Board | |
|---|---|---|
| What it does | SPI microSD with regulator and 5 V-safe buffer | Two Qwiic ports and a prototyping grid |
| Interface | — | — |
| Best for | Data logging | Your own Qwiic add-ons |
| Price | 23 AED | 9 AED |
Downloads
Documents and design files
Need a custom version of this board?
Different connector, size or sensor? We design and build custom variants.