Atmega 128 Led Sign MMC Memory

At the beginning this project was to buy a led sign to interface with my home automation network. This automation network display information like temperature wind speed, humidity etc I had bought on LED Sign but when I received it I got a surprise! There was no serial port to program messages

3 Colors messages
5 Scrolling speed
Serial port for uploading messages

Mesaj panosu Kullanılan Entegre bilgileri
Atmega128 max232 uln2803 74hc164