The Dr. Duino Explorer comes equipped with an Arduino Nano, which is shown plugged in the bottom-middle of the image above.
Alternatively, if you wish, you can unplug the Nano and connect the Dr. Duino Explorer to your own Arduino Uno (you can see the Uno footprint headers above and below the small white breadboard).
If you are anything like me, your designs will involve one or more light-emitting diodes (LEDs), one or more pushbutton switches, and one or more potentiometers, you’ll notice that these are all on the Dr. Duino Explorer as standard parts.
As an avid maker himself, Guido spoke with numerous hobbyists, students, makers, and other engineers to learn what they typically require in their designs.
As a result, he added things like a light-dependent resistor (LDR), a piezo buzzer, and a stick of eight WS2812B tricolor LEDs (commonly known as “NeoPixels” because that’s what the folks at Adafruit call them). There’s also an organic LED (OLED) display (upper right-hand corner) and a rather meaty voltage regulator (just below the OLED display) sufficient to power one’s more “robust” projects.
In addition to connectors into which you can plug your own sensors, actuators, and I2C peripherals, you can also connect an ultrasonic distance-measuring sensor that’s provided with the Dr. Duino Explorer but isn’t shown in the above image.
And, as a complement to the breadboard, there’s also a small prototyping area (bottom right-hand corner) where you can solder on any extra components required by your project or prototype.