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A light meter is a device having a light sensor at one end and a window at the other end which displays the reading that indicates the current light conditions. Light meters are often used in the fields of cinematography, photography and also in test cricket in order to determine the optimum light level for a scene.
Using LB1403 IC and LDR, we can able to build a cheap light meter. LEDs are used to observe the current light conditions and variable resistor is used for adjust the sensitivity. If the LEDs are too bright, change R1 value (220 - 470 ohms). Supply voltage is 6 - 12V.
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| Light Meter Schematic |
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