Limit switch also known as micro switch. In CNC, 3D Printing and RepRap Printers these switches are used as End Stops and to detect max and min limits of axis.
Mechanical switches are simple to use and cheaper than optical endstops because they do not require a circuit board and only use 2 wires for connecting the switch. Pull up and down resistors can be put close to the main board.
MicroSD Card module is a Micro SD card reader module, and the SPI interface via the file system driver, microcontroller system to complete the MicroSD card read and write files. Arduino users can directly use the Arduino IDE comes with an SD card to complete the library card initialization and read-write.
This Mini MP3 Player Module MP3-TF-16P is the perfect integration of hard decoding of MP3 and WMV. The module also customized products, designed for USB card reader, USB sound card, fixed voice, playing low cost development solution.
