A little pcb to sum up the connections from the esp8266 and the ws2812b led strip. Also there is a easy way for power IN and OUT.
The top connector is for power IN or OUT. The second connector is for the serial communication. The third connector is for power IN or OUT. The last connector is for the ws2812b led (strip).
"-" means GROUND (GND) "+" means +5Volt (+5V) "T" means Transmit (TXD0) "R" means Receive (RXD0) "S" means Signal (Signal for ws2812b) "VCC" means +3.3Volt (+3.3V)