It’s powered by an Arduino Diecimila with an Adafruit Ethernet shield. The Arduino reads an online PHP script every five seconds. The PHP script uses the Twitter search API to search Twitter for the desired word(s), and finds the latest matching tweet. It determines if this tweet has been found previously, or if it’s new. The result is sent back to the Arduino. An LED flashes every time a successful connection is made.
If the tweet is new, the Arduino plays four bars of samba-style rhythms. At the start of each bar, each instrument chooses randomly from a set of pre-written patterns, so there are many possible combinations.
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.