USB shield – usb host shield
if you will not use External Power please be sure this jumpers are soldered as below :

so after soldering it will be like this image

8.5×8.5 ON-OFF Switch 1 × 4SAR
7pcs push button 6x6x5 1 × 9SAR
LilyTiny LilyPad CJMCU for Arduino projects 1 × 41SARSubtotal: 54SAR
8.5×8.5 ON-OFF Switch 1 × 4SAR
7pcs push button 6x6x5 1 × 9SAR
LilyTiny LilyPad CJMCU for Arduino projects 1 × 41SARSubtotal: 54SAR
if you will not use External Power please be sure this jumpers are soldered as below :

so after soldering it will be like this image

All Electronics Components
All Electronics Components
All Electronics Components
All Electronics Components
All Electronics Components
All Electronics Components
All Electronics Components
All Electronics Components