Hello,
thanks for the link. What concerns the secret shield 
it is not that i am hiding something - just not sure what is it. Here i attach the file with each pin explained (i received it with device)
you can see that there are 3 sensors connected to the same pin. What harm can i make to a device if i connect 2 more sensors just to try??? Also the picture of a device itself to make it less mysterious
Thanks for help.
shield v3_5 connection_full.pdf (43.6 KB)
