Make: Volume 57 is our annual boards blowout, an examination of the latest from the world of microcontrollers and single-board computers. These prototyping devices are more powerful than ever, with the latest crop now capable of machine-learning tasks such as instantly identifying objects and driving autonomous vehicles. Meanwhile, new board ecosystems have started popping up, giving makers some great alternatives to the venerable classics. Our boards guide insert will help readers figure out what is right for their project. The issue also includes profiles of notable people and companies in this space, with a large featured on Limor Fried, Adafruit’s pioneering open-source engineer/CEO. And, as always, a range of projects to keep you busy in your workshops and makerspaces.