Q1: What is the driver for?
Answer: The LED drivers provide protection to the LED bulbs against current and voltage fluctuations
Q2: Can we DIY for this?
Answer: Yes, 5050 strip is relatively much easier to cut and join compared to COB stripe, since COB requires soldering. Soldering is a process used to join different types of metals together by melting solder. One needs to have electrical expertise to solder.