{"product_id":"sparkfun-thing-plus-dual-port-logging-shield","title":"SparkFun Thing Plus Dual-Port Logging Shield","description":"\u003cp\u003eThe SparkFun Dual-Port Logging Shield is a Thing Plus\/Feather-compatible board which allows you to access your microSD card over both SPI and USB-C.\u003c\/p\u003e\n\u003cp\u003eWe carry several data logging products which have microSD sockets on them: \u003ca href=\"\/en-eu\/products\/sparkfun-openlog-artemis\" target=\"_blank\"\u003eOpenLog Artemis\u003c\/a\u003e and the \u003ca href=\"\/en-eu\/products\/sparkfun-qwiic-openlog\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eQwiic OpenLog\u003c\/a\u003e to name but two. They're great for logging data to a microSD card, but when it comes to reading the logged data quickly you usually have to pop out the microSD card and plug it into your computer. But what if you're developing an embedded system and you don't want to or aren't able to eject the microSD card. Enter the SparkFun Thing Plus Dual-Port Logging Shield!\u003c\/p\u003e\n\u003cp\u003eThe SparkFun Dual-Port Logging Shield is a Thing Plus\/Feather-compatible board which allows you to access your microSD card over both SPI and USB-C. It is designed to be mounted on or under one of the \u003ca href=\"\/en-eu\/search?q=thing%20plus\" target=\"_blank\"\u003eThing Plus boards\u003c\/a\u003e. You can log data to and read data from your microSD card over SPI as usual, using your favorite Arduino SD library. But you can also connect it to your computer via USB-C and read and write files at up to 35 MBytes\/second! The write speed is card-dependent but, in SparkFun's tests, they've routinely seen write speeds around 20MB\/s.\u003c\/p\u003e\n\u003cp\u003eThe SparkFun Dual-Port Logging Shield has an ATtiny841 microcontroller on it to act as an arbiter: If you power up your Thing Plus, the ATtiny841 will automatically put the Dual-Port Logging Shield into SPI mode, so your Arduino code can access the microSD card as normal If you power the Shield from your computer by connecting it via USB-C, the ATtiny841 will put the Shield into SDIO \"thumb drive\" mode. Your computer can then read and write data really quickly! Finally, if you have both your Thing Plus powered up - and have your computer connected - then you can switch between the two modes by giving the ATtiny841 some very simple commands over I2C!\u003c\/p\u003e\n\u003cp\u003eYou can configure the ATtiny to automatically default to SPI mode or SDIO \"thumb drive\" mode if both power sources are powered up simultaneously. It's your choice!\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e The USB2241, which provides the USB interface, supports FAT32, exFAT and NTFS on cards up to and including 32GB. Cards larger than 32GB are not supported.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/learn.sparkfun.com\/tutorials\/2255?_ga=2.209794966.249371743.1655890341-711853578.1634823988\" target=\"_blank\"\u003eGet started with the Thing Plus Dual-Port Logging Shield Guide\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThing Plus \/ Feather-compatible footprint and breakout pins\u003c\/li\u003e\n\u003cli\u003eATtiny841 microcontroller\n\u003cul\u003e\n\u003cli\u003eThe ATtiny841 acts as an arbiter and can put the shield into either SPI or SDIO (\"thumb drive\") mode\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eUSB2241 Ultra Fast USB 2.0 Media Controller\n\u003cul\u003e\n\u003cli\u003eSupports cards\u003cspan\u003e \u003c\/span\u003e\u003cem\u003eup to\u003c\/em\u003e\u003cspan\u003e \u003c\/span\u003e32GB\u003c\/li\u003e\n\u003cli\u003eSupports FAT32, exFAT and NTFS\u003c\/li\u003e\n\u003cli\u003eRead and write speed: up to 35 MBytes\/second (card-dependent)\u003c\/li\u003e\n\u003cli\u003eThe board includes solder pads for an optional 24C04 I\u003csup\u003e2\u003c\/sup\u003eC EEPROM\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003ePush-push microSD socket\u003c\/li\u003e\n\u003cli\u003eSimple I\u003csup\u003e2\u003c\/sup\u003eC command set to switch modes and set the default mode\u003c\/li\u003e\n\u003cli\u003eCan be powered by:\n\u003cul\u003e\n\u003cli\u003eThing Plus \/ Feather 3.3V\u003c\/li\u003e\n\u003cli\u003eUSB-C 5V\u003c\/li\u003e\n\u003cli\u003eOr both!\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eFull power control\n\u003cul\u003e\n\u003cli\u003eSleep current (PWR LED disabled): 300 µA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower source voltage sensing\u003c\/li\u003e\n\u003cli\u003eActivity LED (for SDIO \"thumb drive\" mode)\u003c\/li\u003e\n\u003cli\u003ePower LED (configurable)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eDocuments\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/8\/0\/5\/e\/6\/Schematic_v11.pdf\" target=\"_blank\"\u003eSchematic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/4\/0\/3\/f\/7\/Dual-Port_Logging_Shield_v11.zip\" target=\"_blank\"\u003eEagle Files\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/6\/4\/0\/d\/f\/Dimensions.png\" target=\"_blank\"\u003eBoard Dimensions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/learn.sparkfun.com\/tutorials\/2255\" target=\"_blank\"\u003eHookup Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/d\/9\/e\/f\/b\/USB224x.pdf\" target=\"_blank\"\u003eDatasheet\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003e(USB224x)\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.sparkfun.com\/thing_plus\" target=\"_blank\"\u003eThing+ Info Page\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/github.com\/sparkfun\/SparkFun_Dual-Port_Logging_Shield_Arduino_Library\" target=\"_blank\"\u003eArduino Library\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/github.com\/sparkfun\/Thing_Plus_Dual-Port_Logging_Shield\" target=\"_blank\"\u003eGitHub Hardware Repo\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sparkfun","offers":[{"title":"Default Title","offer_id":40046636204115,"sku":"DEV-19217","price":30.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0174\/1800\/products\/19217-SparkFun_Thing_Plus_Dual-Port_Logging_Shield-01a.jpg?v=1655987248","url":"https:\/\/shop.pimoroni.com\/en-eu\/products\/sparkfun-thing-plus-dual-port-logging-shield","provider":"Pimoroni Ltd","version":"1.0","type":"link"}