Please note that index links point to page beginnings from the print edition. Locations are approximate in e-readers, and you may need to page down one or more times after clicking a link to get to the indexed material.

Page numbers followed by f and t refer to figures and tables, respectively.


algorithms, 16–17

See also specific missions

AND statements, 133

APIs, 229

arcade buttons, 158–161

arrays, 219, 239


BBC micro:bit. See micro:bit

Bike Indicator, 201

algorithm, 202

build, 202–203

in Circuit Playground Express, 209

code, 204–208

debugging, 208

expert level, 209

in micro:bit, 204–209


deleting, 8

starting, 6

Boolean variables, 126

breadboard, setup, 160

bugs, defined, 18

builds, 17

See also specific missions


Circuit Playground ...

Get Save the World with Code: 20 Fun Projects for All Ages Using Raspberry Pi, micro:bit, and Circuit Playground Express now with the O’Reilly learning platform.

O’Reilly members experience live online training, plus books, videos, and digital content from nearly 200 publishers.