This is a basic, 4-digit 7-segment display - red in color. It's common anode. The display features one decimal point per digit, and individually controllable apostrophe points. The LEDs have a forward voltage of 2.1VDC and a max forward current of 20mA. The hardware interface is twelve (two rows of six) through-hole pins.
MF RC522 is a highly integrated transmission module for contactless communication at 13.56 MHz. This transmission module utilises an outstanding modulation and demodulation concept completely integrated for different kinds of contactless communication methods and protocols at 13.56 MHz.
Easy cleaning of soldering head without water
This tool is harmless to your soldering head
Cleans better than conventional sponges
Remove residues quickly and effectively
Made of low abrasive brass shavings
This laser pointer or laser pen is a small handheld device with a laser diode emitting a very narrow coherent low-powered laser beam of visible light, it is frequently used in lecture halls and demonstrations to point at topics of interest on a presentation board. In a school setting, they have become ubiquitous, and they are very useful teaching aids....
PN532 NFC module, as its name implies, is based on PN532 chip and used for 13.56MHz near field communication. The module is equipped with onboard antenna, thus no external antenna coil is needed. It is compatible with SPI, IIC and UART interface for communication. With NFC library support for Arduino and Raspberry Pi offered by us, it is quite convenient...