This is a smart outlet with LCD. You can control the embedded triac by toggling D9 of Arduino. You can also do dimming. A 16×2 LCD is provided so that you can use it to show the status. Two buttons are provided to interact with Arduino. Includes current-sensing. Together with the Xbee shield or WiFi….

Adds an RS232 serial port to your Arduino.

This shield generates negative voltage from the Arduino supply rails. Handy if you need negative voltage.

This is an Arduino Shield for SM5100 quad-band GSM/GPRS module. The module is included.

Carrier shield for a MQ2 flammable gas and smoke sensor detects the concentrations of combustible gas in the air and ouputs its reading as an analog voltage. The sensor can measure concentrations of flammable gas of 300 to 10,000 ppm.

Provides MIDI-IN, MIDI-OUT, and MIDI-THRU connections. MIDI signals are connected to Arduino TX/RX, but can be isolated using a switch to allow a sketch to be uploaded without removing the shield. Includes breakouts for all Arduino I/O.

This shield is used to provide a rechargable battery pack for the Arduino. The mini-USB port is used to charge a Li-Ion or Lo-Ion poly battery. There are LEDs showing the charge status. 6 big mounting holes can help you easily fix the battery pack. For a 600mAH battery, it takes about half hour to….

This is the GPS SR92 module for Arduino with a SD card slot. CuteDigi