Twitter-controlled Mood Lamp using an Arduino Steven Pearson February 23, 2013 Arduino, Electronics Share ! Massimo Banzi uses a Wi-Fi shield module to connect his Arduino unit to the Internet. This obviously opens up a whole range of new possibilities, which Banzi explores in the video. For the purposes of this demonstration, Banzi creates a simple lamp circuit that will change colour according to the messages posted on Twitter. So if someone, for instance, Tweets a message that begins with #ArduinoRGB followed by a colour represented by a six digit decimal number (like the way colours are displayed in HTML), the lamp will then change colour accordingly.