However this TLC5940NT seems to be rather expensive on the usual websites like amazon etc...because it seems to be obsolete. On several electronics website I always find the TLC5940PWPR or TLC5940QRHBREP first which costs like 2€ a piece.
...but I assume they are suited for the task (connecting 25 LEDs and control them individually).
What is the actual difference between those? The TLC5940NT being obsolete, will the existing library for TLC5940 still work?
How would I reconnect those individual pieces?
Regarding LED stripes (for example WS8212B): Let's say I would like to do a square, it will not be possible unless I cut it in pieces. How would I reconnect those individual pieces? Solder? jumper wires?