A few things might inhibit an Arduino, AVR ... have a chip that is directly mountable on a common breadboard. Even if you don’t mind using a development board, you may want to use the IC ...

Compatible with Arduino and Raspberry Pi, it can almost meet all your needs. (Without Microcontroller Board) Breadboard and Power ... the components neat after using. Datasheet and Tutorial ...

Like the Nano, the Micro's size and male pin headers make it perfect for prototyping with a breadboard ... simple circuits like the Arduino's built-in examples. If using the board to familiarize ...

Here’s a no-PCB Arduino that doesn’t obscure the DIP ... allowing it to be used in a breadboard or DIP socket. You can see a walk through of the components in the clip after the break.