I’m back to the drawing board as they say:)
Pogo pins are out of the equation, I will never reach the desired amps successfully and safely given the small footprint(connecting PCBs can be 3x3cm max) and low profile needed.
As much as I love the idea of keeping the pieces together magnetically, I’ll have to go for something else, most probably the classic pins used for LED strips anyway. Now I’m thinking of having 3 pins in the male side, and 6 holes in the female(3 plus 3 inverted, so the blocks can be connected in two ways, “normal” or 180 degrees inverted).
Here’s a video of one block:
That one in particular is 20x3x3 with 12 leds inside, final blocks will be 16x3x3 with 10.
As mentioned in another thread, this is meant to be a birthday present to my girlfriend which is on May 21st, so I don’t have an awful lot of time to solve all issues. The good thing is that everything concerning wood, plexiglass or leds is solved, and I’m getting to know a bit more on how to code everyday. What remains is the connector-which of course is the most important part:)
I don’t mind losing addressability whenever the strip is split, I think you can still do beautiful things even if blocks running in parallel are the same. I bought the expander as well and will have a few outputs available. I’ll make a few cables that end with a connecting cube(3x3x3) so she will be able to do all sorts of combinations.
If time permits, I’ll make angled connecting blocks so that she can make a sphere as well.
Anything magnetic I’ve seen so far(including that great linux computer that you linked) just can’t handle the 18Amps of max theoretical load if all blocks(30 x 10 leds) are used.