This is a small build-it-yourself Educational Arduino© clone board. The components are readily available and it is quite easy to construct.

I designed it originally for a friend's daughter to learn about microcontrollers and electronics but it became popular on a wider platform. The details of its design cycle and files, including the circuit diagram and parts list, can be found at the documentation link below.

The key features of this board are its size, the ability to program it either serially with a bootloader in the microcontroller with a cheap programmer or via ICSP directly. It also has an optional power LED and a user indicator LED on pin D10. Further, it has a GPIO header and the main IC pins have enough clearance to use a ZIF socket for ease of changing the microcontroller. Finally, it has a 7805 5V regulator on board to supply power to the minDUINO circuit and external sensors/devices.

Being a clone of the very popular Arduino©, the minDUINO can do pretty much everything an Arduino© (Uno) can. The GPIO header was deliberately configured for easy connection to the board and produce daughter boards for. Male or Female sockets can be used by preference throughout.