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Description
SparkFun Thing Plus Dual-Port Logging Shield
Versatile dual-port logging shield for Thing Plus/Feather boards
Fast read and write speeds up to 35 MBytes/second
Supports FAT32, exFAT, and NTFS on cards up to 32GB
Easy mode switching with simple I2C commands
The SparkFun Thing Plus Dual-Port Logging Shield is a Thing Plus/Feather-compatible board designed to enable access to a microSD card via both SPI and USB-C interfaces. This versatile shield can be mounted on or under a Thing Plus board, providing the ability to log data to and read data from the microSD card using a preferred Arduino SD library.
In addition to SPI access, the shield can be connected to a computer through a USB-C port, allowing for read and write speeds of up to 35 MBytes/second. The actual write speed is dependent on the card, but tests have shown speeds around 20 MB/s.
An ATtiny841 microcontroller on the shield serves as an arbiter, automatically switching the Dual-Port Logging Shield into SPI mode when the Thing Plus is powered up. This enables the Arduino code to access the microSD card as usual. When powered via USB-C from a computer, the ATtiny841 puts the shield into SDIO "thumb drive" mode, allowing for quick data transfer.
If both the Thing Plus and computer are connected simultaneously, the ATtiny841 can be given simple commands over I2C to switch between the two modes. The ATtiny can also be configured to default to either SPI mode or SDIO "thumb drive" mode when both power sources are active.
Please note that the USB2241, which provides the USB interface, supports FAT32, exFAT, and NTFS on cards up to 32GB. Cards larger than 32 GB are not supported.
1x SparkFun Thing Plus Dual-Port Logging Shield
Thing Plus / Feather-compatible footprint and breakout pins
ATtiny841 microcontroller
USB2241 Ultra Fast USB 2.0 Media Controller
Supports cards up to 32GB
Supports FAT32, exFAT and NTFS
Read and write speed: up to 35 MBytes/second (card-dependent)
Push-push microSD socket
Simple I2C command set to switch modes and set the default mode
Can be powered by: Thing Plus / Feather 3.3V, USB-C 5V, or both
Full power control - Sleep current (PWR LED disabled): 300 µA
If you are not satisfied for whatever reason with a Product you bought on the Site, it is possible to return it for refund within 30 days from the date you received it unless otherwise indicated in the Product listing. You must first advise the Vendor associated with your order in your account to obtain a return authorization (‘’RA’’) number before returning a Product. (‘’RA’’) numbers are valid for 30 days, within which time the returned Products should be received by the Vendor. No returns will be accepted without having previously obtained an (‘’RA’’) number. The Product must then be returned in its original packaging (in perfect condition for resale) with its receipt and your (‘’RA’’) number. Reimbursement will be denied for any Products which do not conform to the above mentioned conditions.
Build-it-yourself Robot Parts are not refundable once assembled. Robots & Kits requiring assembly or soldering are also not refundable once assembled, soldered or modified in any way. All sales of robotic software and apps are final and cannot be refunded or exchanged. Returns are not accepted on special orders and clearance items except when they are found defective, in which case the Product may be repaired or replaced at the Vendor’s discretion. 20% Restocking fees may apply if you are returning a large quantity of the same Product that was ordered specifically for you from the manufacturer.
Please note that all items will be reimbursed within 7 to 14 days of receiving the Product (shipping fees excluded). You must also cover the cost of returning the Product. Shipping fees will only be refunded if the return is a result of a shipping error on our part. Cleaning fees of USD 100 may also be charged if a domestic robot is returned and has not been properly cleaned.
