Here is the first board mounted! This is a GPIO voltage translator with monitoring for the Raspberry Pi. Not tested yet but I am very happy with the quality of the PCB (made via http://smart-prototyping.com).
The PCB is 4 layers with 5×5 cm dimensions to fit with smart-prototypes and other PCB manufacturers offer (Seeedstudio, ITEADstudio, DFrobot, hqpcb for those living in China…).
I am going to start the debug process and verify everything is fine.