The Calliope mini V3 has an improved processor architecture as well as additional and improved connectivity options. There is a USB-C connector and the pin header can be used directly with jumper cables or expansion boards. Jacdac is another connector with reverse polarity protection. This allows actuators and sensors to be connected in series and, for example, exchanged directly with a connected computer via WebUSB.
In the middle of the year 2020 the version 2.0 (Calliope mini REV2) was introduced, which now includes the possibility to store an additional 25 programs on an additional flash memory. The version 2.1 got as a small improvement compared to the 2.0 an RP2040 as interface processor, with this adjustment also the flash memory was placed closer to the processor to get a better connection. So it is placed on the left side.
Since mid-2018, version 1.3 is available, which can be recognized by the fact that the pin bar now has six holes (an additional ground pin has been added for easier motor connection).
The official release version (1.0) has been available since the beginning of 2017. The Calliope logo is printed on the bottom left of this version. The pin header in the center of the board has five holes in this version.