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 […]

The Audrey Braille Display

David Pankhurst has a very interesting open source project, The Audrey Braille Display, which aims to lower the cost of braille displays.  A braille display allows blind people to read output from a computer. Traditional displays cost several thousand dollars while this project is aiming for displays costing only hundreds of dollars.  This is accomplished by using […]

Display custom characters on 16×2 LCDs

Chris from PyroElectro informs us of his tutorial on designing custom characters for display on a 16×2 HD44780 compatible LCD. This tutorial shows how to use the advanced functionality of HD44780 16×2 LCD’s where you can create your own characters instead of using the built-in character set, and includes a simple demonstration of animation on […]