Compatible With Arduino. It Is Never A Bad Idea To Have Extra Parts Like Leds,Jumper Wires,Resistors Around. Beginers Can Learn The Basics Of Arduino Programming As Well As The Expert In Programming From This Kit. You Will Get What Arduino Is All About And How It Is Used. 25 Lessons Hello World! Let There Be Blink Pwm Light Brightness Control Advertising Light Traffic Light Button Control Responder Making Sounds Analog Readings Light Control Sound Photosensitive Lights Tempreture Sensor Tilt Switch Control Light Fire Alarm Led 1 Digit. 8-segment Displays Led 4 Digit. 8-segment Displays 74Hc595 Control Lights Servo Motors Infrared Remote Control(Up To 8 Meters) 1602 Lcd Display Ps2 Joystick Stepper Motors Rgb Led Module Relay Module Led Dot Matrix Display-scrolling Message