This shield have the advantage to mount ESP32 mod Top OR Bottom in order to connect the shield on Top of HydraBus or on Bottom of HydraBus, can be also used without an HydraBus (you can cut the board after J4/J5 for a very little ESP32 breakout board).
This board is released as CC BY-SA 4.0
Final board Rev0 21 December 2015 ordered on DirtyPcb:
http://dirtypcbs.com/view.php?share=149 ... 1cdba9307d
![Image](http://dirtypcbs.com/order_images/0ada0a5dabb58a616afe6d1cdba9307d-14996_top.png)
Eagle 7.x files available at:
http://hydrabus.com/HydraESP32_Rev0_21D ... irtyPCB.7z
For more details on HydraBus see http://hydrabus.com