LED Matrix


The LED display area.
Control logic and LED driver circuits.
The not so pretty soldering made with a big soldering iron lacking temperature control.

This is one of my first electronics projects (that do something). The LED matrix consists of 16x8 LEDs (256 solder points for LEDs alone) that is controlled by a PIC16F84 who scans the columns through a demultiplexer. The control program is written in PIC assembly.