"Introducing my "ESP8266 hub Missile, duino-coin". I've created this modular missile-shaped hub to house 5 ESP8266 boards. Of course, you can add infinite modules and boards. The power cables are soldered onto each board and lead to the base, where they are either soldered together or connected with a simple electrical terminal (as I did). This will allow powering them all with just one USB case. On the side of each module, there's a dedicated passage for the cables to keep them tidy. I printed the modules in transparent material to see the status of the LEDs on each board. I use them to "mining" duino-coins. The modules are stacked using 2 threaded M8 rods, but you can also print cylinders of the same diameter instead. Give a like if you enjoyed it!"