32 pages :color illustrations ;29 cm.
Includes bibliographical references and index.
Be a maker! -- Then and now -- How do sensors work? -- How do LEDs work? -- Join a club! -- Make an LED throwie! -- Getting started with sensors -- Motion-sensing alarm -- Even more projects -- Keep experimenting -- More about making.
LSC14.69
1.Electronics--Juvenile literature.2.Electronic apparatus and appliances--Design and construction--Juvenile literature.3.Detectors--Design and construction--Juvenile literature.4.Light emitting diodes--Juvenile literature.Dynamic Details