Using traditional breadboard wiring, easy for beginners to forget the protective resistor connected, so that the current is too large, burning lights.
The LED module has an overcurrent protection circuit. Identify the function of each pin can be any expansion boards butt.
If you want to connect a plurality of LED Arduino, the use of the combination of the LED modules and expansion boards, allowing wiring becomes very refreshing.

• Core components: The module uses imported high quality bright LED lamp beads, to ensure the color, brightness and durability.
• PCB production: PCB board with silver pads, each of the mounting holes and interfaces are identified with a circle of silver. Cutaway circular all around, avoid any sharp board.
• Mechanical design: the four corners of the module are set to standard mounting holes, you can easily fixed in the above project.
• Electronic Design: This small PCB board also placed overcurrent protection circuit pressure, a clear indication of GND / VCC / SIGNAL interface. We connect the supplied 3P digital sensor line, users can line to normal IO sensor expansion board.

Core components: The module uses imported high quality bright LED lamp beads, to ensure the color, brightness and durability.Haweier