So far I have not found an ESP development module which can be inserted to a socket sideways e.g. to save PCB footprint (for use in smaller enclosures) and to increase module density (e.g. in a HPC application / ESP cluster / multi-ESP configurations).
Here is one design I created (feel free to use/modify/improve/etc).
I wish that some day a manufacturer realizes its potential and creates a produc...
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)