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Volume III of the Forrest Mims Engineer's Mini Notebook series includes three of his best selling notebooks devoted to sensors: Sensor Projects; Solar Cell Projects; and Magnet Sensor Projects. Electronic sensors convert light, temperature, sound, magnetic fields, and other signals into a form that can be processed by electronic circuits. Sensors have become an increasingly important segment of modern electronics.
Learn about important sensors like solar cells, photoresistors, thermistors, hall-effect devices, and magnet switches. Then use these sensors to build circuits and projects that respond to heat, pressure, light, touch, water, strain, lightning, and magnets. You can even make a circuit that detects the presence of the cursor on your computer screen and the position of a compass needle.