The ItsyBitsy nRF52840 Express is shipped with an Arduino IDE compatible demo, but the user can install CircuitPython on the board with only a few clicks. When the user plugs it in, it will show up as a small disk drive with code.py on it. The user can edit code.py with their favorite text editor to build a wireless-enabled project using Python. No installs, IDE or compiler needed, so the user can use it on any computer, even ChromeBooks or computers that a user can't install software on. When they are done, unplug the Itsy' and to code will go with them. Each board comes with one assembled and tested ItsyBitsy nRF52840, with headers that can be soldered in, for use with a breadboard.