@kaia there are inputs and outputs, your goal is to use the signal from the inputs and get as much lines to the outputs as possible. depending on splitters and other things, the bar will be filled by 1 or even 2-3 per line to the output. change the direction the things by clicking on them... 

 @kaia 
> and why is the receiver the wrong way around at the top?
change the direction if you need to change it 

 @:blobcatverified2: the blue circuit works, even though the receiver is the wrong way around. the green sender with ? I cannot turn and it does not output anything. the path does not light up. I'm lost.

https://brotka.st/media/a7eb3be479fd833244a8d8d60364b2f5224d3564043e1d706e731e78177c264f.jpg 

 @kaia you can turn the blue towers 

 @:blobcatverified2: yeah, but the first green squiggly thing from the source does not light up like it does for the other source :ChenShrug: 

 @kaia there is a reason for it, the blue ones doesnt always work as expected... i had that one too and it took me some time too... i remember it wasnt easy but i dont remember the solution tho 

 @kaia oh i just looked it up, i guess the goal is to connect the cubes 

 @:blobcatverified2: oooooh :mukiLook: okie, I'll try, thank you!!! 

 @:blobcatverified2: now I have it the other way around, but still not the blue and green mhhh

https://brotka.st/media/9ad3edc9ac02bb93a502bc90fcb04d7cea94b8daeaeb9653936f41b2c6944d8a.png 

 @kaia it looks quite good, try to connect the 2 cubes not the one with the rounded corner. 

 @kaia instead of going to the left and connect it to the rounded corner, it has to go to the right