The latest Arduino design is available and I’ve still got this box full of the previous revision – the Diecimila. 🙁
But my loss is your gain… you can now get an Arduino for $30! And for a limited time, you can even get a preprogrammed upgrade chip (with 2x memory & 2x storage) to go along with it for $5 more.
(In case you are wondering the difference between the Diecimila & the newer Duemilanove, the newer version automatically switches between USB and DC power where as the older version has a jumper to switch between the two. The microcontroller is the same, the pinout and shape is the same, etc.)
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.