The CALLIOPE mini is a micro-controller, which is used as an educational medium for children starting from the third class, generally under the supervision of adults.The CALLIOPE mini shows that all can code and that too with a lot of fun. It's easy to get started, so that children, teachers and parents can get started without any prior knowledge. From the first self-programmed flashing through self-propelled robots to wirelessly communicating with CALLIOPE mini-warms: With a few clicks, you can create your own programs for the microprocessor on a connected computer, which bring the CALLIOPE mini to life.Along with 25 red as well as an RGB-LED and two programmable buttons, the board contains a combined position sensor with motion sensor and compass as well as a radio module, with which the CALLIOPE mini can communicate with other CALLIOPE mini. The board can be programmed via laptop or computer via free editors, e.g. Open Roberta Lab from the Fraunhofer Society. You can also transfer self-created programs wirelessly via APP. The board comes with five pre-installed start programs â and 25 others on the flash memory â which are explained in a small booklet and under Calliope.cc/start. In addition, battery holder with high-quality batteries and a USB cable are included in the delivery for the connection to the computer.CALLIOPE mini V3In addition to an improved processor architecture, the CALLIOPE mini V3 has added further improved connection options. There is a USB-C connector and in addition the pin strip can be used directly with jumper cables or extension boards. With Jacdac another connector protected against polarity reversal is integrated. In this way, actuators and sensors can be connected in series and stand directly in the exchange with a connected computer via WebUSB.5x5 LED matrixThe red lamps are so-called LEDs (from the light emitting diodes). They form a 5x5 LED matrix and can be controlled individually.RGB LEDThe RGB LED below the LED matrix enables the display of innumerable colors mixed in red, green and blue. The CALLIOPE mini V3 has three RGB LEDs.SpeakerWith the built-in speaker, you can play sound effects and music or simply beep it â WAS also needs your project.Buttons/keysUse the buttons A and B to the left and right of the LED matrix to make input. Pressing a button closes a circuit. The board can detect whether only one or both buttons are pressed.Touch PinsYou can connect sensors such as temperature sensors or humidity meters to the pins labeled P0, P1 and P2 on the CALLIOPE mini. They are also touch sensitive, as you can see from touch screens, for example.You can use the corners marked + and -, in order to connect a battery or power via the terminals, in order to make the LED light permanently.LogoThe CALLIOPE mini V3 has an additional touch pin in the shape of the CALLIOPE logo on the back.Position sensorThis combined component next to button A contains a compass, a motion sensor and an acceleration sensor. This allows the CALLIOPE mini to measure, for example, in which direction and with which speed it is moved.CompassThe combined component under the button A contains a compass, a motion sensor and an acceleration sensor. With its help, the CALLIOPE mini can detect, in which direction and at which speed it is moved.Light sensorThe light sensor measures the brightness in the environment via some of the red LEDs.Temperature sensorThe temperature sensor is able to measure the temperature in the environment as it is attached to the processor, but the temperature is not quite accurate.MicrophoneThe microphone can measure the volume of the surrounding area as a sensor. The CALLIOPE mini V3 microphone can now also record speech and sounds.RadioYou can send signals via radio from a CALLIOPE mini to another one and thus forward the messages.BluetoothYou are not in the mood for cables or want to work with your CALLIOPE mini away from the computer? No problem: Via Bluetooth you can connect the board with a smartphone or tablet and transfer data. It is also the other way round - the CALLIOPE mini can trigger certain functions on the Smartphone just as you have programmed it.GroveExtension modules can be connected to the two Grove connection plugs, so that you can measure light, distance or color with the CALLIOPE mini. Simply plug and play!Pin header / motor driverThe CALLIOPE mini V3 has an mounted pin strip that can be used to easily connect engines and extensions. This allows the CALLIOPE mini to be quickly converted into a robot or a self-propelled car.JacdacBy means of the JacDac connectors of the CALLIOPE mini V3 different modules can be connected and WAS is great: That too in series! Connect buzzer, with LED-rings and regulator.USB connectionThe USB-connection at the top side of your CALLIOPE mini is the simplest possibility, in order to transfer your own programs. Connect the CALLIOPE mini V3 to the USB-C cable and your computer is ready to go!Battery connectionYou need 2 AAA b