This expandable LED display for a microcontroller in Figure 1 has a simple interface with only 6 data/control wires and can be easily accommodated to a DIY design. The display has static indication.

This design idea (Figure 1) shows how easily “new flesh can be added to the old bones” and how some new functions can be added to the simple LED display that was published earlier. Figure 1 Upgraded ...

Thanks to our Technology Editor Steve Bush for flagging this one - Build a DIY LED - which continues the LED theme nicely, following our Build your own LED cube post. It is a fascinating article by ...