The Cubetto first appeared on Kickstarter in 2013. The V1 was a DIY kit. The programming blocks contained a resistor. When inserted in "controller", it was a part of a voltage divider, and an ADC was measuring the voltage across it. Because there was only 4 different blocks, it was easy to differentiate between those different voltages. There was an Arduino Mega inside the "controller", with 16 analog inputs, so the "controller" had 16 places for programing. It was divided into 12 places for main program, and 4 places for subroutine. The 4 different blocks where: left turn, right turn, forward, jump to the subroutine. Later, the files for this version were uploaded to Github, you can find it here. In there, it is called "primo prototype". You can find all the information for rebuild, source codes, drawings for lasercuting, etc.

Last year the Cubetto appeared on the Kickstarter once more. But this time, it was a polished product. It looked much, much better. So it scored a whooping 1.6 million $ in funds. In this V2, the programming block had no more electrical connection to the "controller". There were 3 places for the magnets, and in the "controller" there is a PCB, size of the "controller", with HAL sensors, under the programming places. Different blocks had magnet(s) in different places, so by reading out the 3 HAL sensor, you could find out, are there some blocks, and what type are.