Category: AVR Stuff

Eid Muabarak 1433H (2012) – Another LED-Dot-Matrix Display [VIDEO]

Another day, another celebration and another video showing a message on my newly found addiction of LED-Dot-Matrix Displays… This time, 2 displays connected together, showing the message as a marquee. The message was also now simply put in as a simple character array, no more manual pattern making, now the MESSAGE can be updated as…

August 19, 2012
8×8 LED Matrix – Dot-Matrix Font Demo

Another day, another LED Matrix video. These 64 LED packs have got me fixed on them and I have been trying all sorts of stuff… VIDEO AT THE END I have finally made a completely proper circuit on breadboard with 2x 74HC595s and 1x ULN2803 for current sinking and resistors for current limiting. The first…

August 17, 2012
Pakistan’s Independence Day 2012 – LED Matrix Display

I finally completed writing code for a Marquee Display and since I used the morning of 14th August to write this code, the least I could do was to celebrate Pakistan’s Independence Day as the first message and test for my code. The code has DEFINE(s) for Display Length, Message Length, Speed Control and a…

August 14, 2012
UART Library [Quick Tutorial]

Having easy UART Functionality can be of great use in AVR Projects, even if they don’t need the UART fucntionality, the UART can be used as a great debugging tool (sending program status to the UART as a console). Peter Fleury has a AVR UART Library as well along with his AVR LCD Library which…

July 12, 2012
AVR EEPROM for Data Storage & More

Most AVRs have a small EEPROM which can be used to save variables, configuration settings etc when there is no power and the data is available for read/write/modify the next time AVR powers up. This post simply shows the most basic method for saving a variable (char) in the AVR EEPROM, modifying it at every…

July 1, 2012