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The Bluno Beetle Shield expands the Beetle's single analog and digital I/O pins to the 3 pin "gravity" interface, giving more power and ground connections and making it easier to attach gravity interface modules. It also includes a convenient external power supply and a 5-8v switch to power the board on and off. To use the shield, the Bluno Beetle is stacked on to the shield's I/O pins and then soldered in place.
This is a Micro SD(TF) module from DFRobot. It is compatible with TF SD card (commonly used in Mobile Phone) which is the most tiny card in the market. SD module has various applications such as data logger, audio, video, graphics. This module will greatly expand the capbility an Arduino can do with their poor limited memory.
This module has SPI interface and 5V power supply which is compatible with Arduino UNO/Mega. The Pinout is fully compatiblw with DFRobot's IO Expansion Shield V7.