Erich Styger has written an article on how to boot the NXP i.MX RT from Micro SD card: It is a common thing to boot a Linux system (see the Raspberry Pi) from a micro SD card. It is not that common for a microcontroller. The NXP i.MX RT ARM Cortex-M7 fills that gap between these two […]
Tag Archives: sd card
Switching off SD cards for low power data logging
Edward Mallon writes: I saved SD power control to the end of my quest for low power logging, because of all the potential weirdness that could arise with the Arduino libraries. But after a reasonably thorough round of testing it all seems to be working OK with a BJT switching the ground line. More details […]
SD card logger library with log rotation that fits on ATmega8
Davide Gironi writes: This library implements an SD card Data Logger that runs on ATmega. It has a small footprint, so it can be loaded on an ATmega8, leaving space for user code. It supports SD and microSD cards formatted with FAT16. It also features log rotation. The “Petit FAT File System Module” by ChaN […]
Propeller Halloween pumpkin project
This project uses a Parallax Propeller Project board with microSD card attached, PIR sensor, LM386 Audio Amp, IRL520 FET and associated discrete components to make an animated Halloween prop. The PIR inside the pumpkin senses motion and when triggered it plays a WAV file from a microSD Card while flashing an internal light, causing an […]
PCB a Week 19: SD Card Breakout for breadboards
Mats continues his challenge of designing one PCB every week. In week 19 he came up with breakout board for micro SD cards: This weeks PAW is just a breakout board for micro SD cards. There’s a number of boards like this on the market already, but they are kinda expensive and I like doing […]
2boots: Arduino/AVR serial and SD card bootloader
Martin tipped us off to an AVR/Arduino serial and mmc/SD card bootlaoder. It was designed to fit the same 2kb memory area that the usual Arduino booloader fits into, but can load firmware from an SD card too. Very useful for on “in the field” programing. This is a proof-of-concept dual bootloader for Atmel AVR […]
BootDrive loads Arduino sketches from an SD card
Kevin wrote an Arduino bootloader that loads sketches from an SD card. BootDrive is open source and available on GitHub. Announcing the formal release of BootDrive for Arduino. If you’ve been reading the blog, you know that I’ve been working with Justin Shaw of Wyolum labs to enable their I2SD (Arduino clone with a micro-sd […]
Arduino Ethernet + SD card tutorial
Ladyada has posted this detailed tutorial over at Adafruit on using Ethernet and SD card with Arduino. It describes how to use the Arduino to browse files on an SD card remotely. This tutorial is targeted at those who already have quite a bit of Arduino or microcontroller experience and are ‘fluent’ in C/C++/Java!
MMC/SD/SDHC card library
Hidden away in SparkFun’s AD5330 demo is an open source FAT SD card read/write library from Roland Riegel. The MMC/SD/SDHC card library is intended for AVR microcontrollers, and it supports FAT16 and FAT32, partition tables, and low-level read/write operations. The source download includes an example application. This project should be pretty easy to port to […]
Demo: Interface an SD card with the Bus Pirate
nada demonstrates how to initialize, read, and write an SD card with the Bus Pirate SPI library. Don’t miss the GPS logger project that the SD card went into. Get your own assembled Bus Pirate v3 for $30, including worldwide shipping. Via Hack a Day
Web platform: SD card web server demo
This is an old version, see the latest version on the documentation wiki. The goal of this demo is to serve files to a web browser from a microSD card using the web platform hardware. Microchip’s latest TCPIP stack demonstration includes an HTTP server that reads files from FAT formatted SD cards, so there’s no […]