Adaptive brightness control for seven segment LED displays

Raj made a temperature and relative humidity meter to demonstrate adaptive brightness control on a seven segment LCD. The system uses a LDR light sensor in a closed loop to continuously adjust the brightness of the LEDs. The objective of this project is to illustrate a technique of implementing adaptive brightness control to seven segment […]

App Note: Optimizing visibility and battery life of portable displays

Here is an app note from Maxim describing how to implement light intensity sensing in the visible spectrum. This is used to adjust the brightness of displays in portable devices. Human eyes only perceive a limited light spectrum. Sensors used to detect light intensity require complex conversions of their spectrum to emulate human eyes. Another […]