MyIoT " Motherboard" design review

Hi Gents

So with the recent explosion in the IoT industry I wanted to start playing with more connected devices but couldn’t find a standard board suited for this application(Size, Battery,exc) so I decided to design one.

Attached is a 32u4 based schematic that combines a MicroSD shield, RFM Lora module footprint from
Hope Rf, RTC and a battery charging regulating circuit. I hope someone can have a look at the design and confirm my design or recommend any changes ?

The purpose of this board is to act as my own " UNO" board. once done I will be developing a bunch of shield for it.

Thanx !

myIoT.pdf (103 KB)