Share tips you have come across

[LarryD]

Use breadboard helper boards to quickly test your circuit designs and sketch code.
When you come up with a design you often use, make a PCB to plug and play.

I/O one place

Bobweeney from CrossRoads Atmega1284:

LED helper:

ATtinyX5 Breadboard Helper

Ardweeny

Power Supply for breadboard