We are having a serious issue with the rechargeable batteries right now. I am thinking about switching to 4 x AA batteries. But it will still be a bit glitchy when they are not well charged.
Also on the 3D model we have one issue with the arms that don't allow them to move correctly. For some reason everything looks good but after assembly they get locked and they can't move even a bit. My impression is that there is to much pressure applied to the gears.
Work in progress ! I am happy to say that the games played with the kids are a complete success. But there are some small issues with the new cards / syntax that we invented as game rules:
6 movement cards
Play card to execute the code
Pause / Reset cards
Function 1 & Function 2 (can work recursively between each other)
IF sound / IF movement / IF distance is close / IF distance is far
As you can see, I borrowed as much as I could from Scratch software. Nevertheless it's already the first set of instructions and we get over 20 cards. What is really inconvenient for the kids, there are too many cards in your hands and it becomes difficult to play. Still many things to figure out...