Design with Adafruit SPI Flash SD Card in Cirkit DesignerThe Adafruit SPI Flash SD Card is a versatile breakout board designed for data storage and retrieval using SPI (Serial Peripheral Interface) communication. This component is ideal for projects requiring external memory, such as data logging, audio recording, or firmware updates. It is compatible with both 3.3V and 5V microcontrollers, including popular platforms like Arduino, ESP8266, and Raspberry Pi.
This circuit consists of an Arduino UNO connected to an SD card module. The Arduino provides power and ground to the SD module and interfaces with it using SPI communication through digital pins D10 (CS), D11 (MOSI), D12 (MISO), and D13 (SCK). The setup is intended for reading from or writing to an SD card using the Arduino.
Open Project in Cirkit Designer
This circuit features an ESP32-C3 microcontroller interfaced with a Micro SD Card Module. The ESP32-C3 handles SPI communication with the SD card for data storage and retrieval, with specific GPIO pins assigned for MOSI, MISO, SCK, and CS signals.
Open Project in Cirkit Designer
This circuit features an Arduino UNO R4 WiFi microcontroller connected to a Micro SD Card Module for data storage, a BNO055 sensor for orientation data, and three red LEDs for indication purposes. The LEDs are controlled by digital pins D2, D3, and D4, and can be turned on or off using a single-pole single-throw (SPST) toggle switch connected to their common cathodes and ground. The BNO055 sensor interfaces with the Arduino via I2C communication using the SDA and SCL pins, and the Micro SD Card Module is interfaced using SPI with chip select on pin D10 and data lines on pins D11 (MOSI), D12 (MISO), and D13 (SCK).
Open Project in Cirkit Designer
This circuit is designed to interface an Arduino UNO with a Micro SD Card Module for data storage, powered by two 18650 Li-ion batteries through a USB plug and controlled by a rocker switch. The Arduino communicates with the SD card module via SPI protocol and is also connected to the USB plug for potential data transfer or power supply.
Open Project in Cirkit Designer| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | CS | Chip Select for the SPI flash memory |
| 2 | SCK | Serial Clock for SPI communication |
| 3 | MISO | Master In Slave Out for SPI communication |
| 4 | MOSI | Master Out Slave In for SPI communication |
| 5 | GND | Ground connection |
| 6 | VCC | Power supply (3.3V to 5V) |
| 7 | CS_SD | Chip Select for the microSD card |
| 8 | CD | Card Detect for the microSD card |
#include <SPI.h>
#include <SD.h>
const int chipSelectSD = 10; // Chip Select pin for SD card
void setup() {
Serial.begin(9600);
while (!Serial) {
; // Wait for serial port to connect.
}
Serial.print("Initializing SD card...");
if (!SD.begin(chipSelectSD)) {
Serial.println("initialization failed!");
return;
}
Serial.println("initialization done.");
}
void loop() {
// Open a new file to write to it.
File dataFile = SD.open("datalog.txt", FILE_WRITE);
// If the file is available, write to it.
if (dataFile) {
dataFile.println("Data log entry");
dataFile.close();
Serial.println("Data written to datalog.txt");
} else {
// If the file isn't open, pop up an error.
Serial.println("error opening datalog.txt");
}
}
SD.cardType() function to verify the SD card type and ensure compatibility.Q: Can I use this breakout board with a 5V microcontroller? A: Yes, the board includes level shifters to interface with both 3.3V and 5V microcontrollers.
Q: What is the maximum size of the microSD card that I can use? A: The breakout board supports SD, SDHC, and SDXC cards, typically up to 2TB, depending on the SD card specifications.
Q: How do I select between the SPI flash and the microSD card? A: You control which memory is active by setting the corresponding chip select (CS) pin LOW. Only one CS pin should be LOW at a time to communicate with the desired memory.
This documentation provides a comprehensive guide to using the Adafruit SPI Flash SD Card breakout board. For further assistance, consult the Adafruit forums or the community resources available online.