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

Diode 10A Rectifier Diode 1 × 6SAR
Vibration Motor 3v 1 × 23SAR
BreadBoard Big size metal plate 1 × 73SAR
Capacitor 2200uf 35v Electrolytic 1 × 4SAR
DFPlayer Mini MP3 Player Module For Arduino 1 × 92SAR
Medium Kit for Arduino Projects 1 × 229SAR
ULN2003 Darlington Transistor array IC 1 × 10SAR
Resistor and LEDs Small Kit 1 × 23SAR
Battery 12v 2.3Ah Lead-Acid Rechargeable Battery 1 × 58SAR
Magnetic Switch with magnet 1 × 29SAR
Small ON-OFF Switch 3pin PCB 2.54mm Pitch 1 × 4SAR
MEGA Board for Arduino Mega 2560 Projects 1 × 135SAR
voltmeter and current display 1 × 35SAR
PBS-33B WATERPROOF PUSHBUTON SWITCH 12MM – Red 1 × 7SAR
Prototype Shield for Arduino MEGA 1 × 35SARSubtotal: 763SAR
Diode 10A Rectifier Diode 1 × 6SAR
Vibration Motor 3v 1 × 23SAR
BreadBoard Big size metal plate 1 × 73SAR
Capacitor 2200uf 35v Electrolytic 1 × 4SAR
DFPlayer Mini MP3 Player Module For Arduino 1 × 92SAR
Medium Kit for Arduino Projects 1 × 229SAR
ULN2003 Darlington Transistor array IC 1 × 10SAR
Resistor and LEDs Small Kit 1 × 23SAR
Battery 12v 2.3Ah Lead-Acid Rechargeable Battery 1 × 58SAR
Magnetic Switch with magnet 1 × 29SAR
Small ON-OFF Switch 3pin PCB 2.54mm Pitch 1 × 4SAR
MEGA Board for Arduino Mega 2560 Projects 1 × 135SAR
voltmeter and current display 1 × 35SAR
PBS-33B WATERPROOF PUSHBUTON SWITCH 12MM – Red 1 × 7SAR
Prototype Shield for Arduino MEGA 1 × 35SARSubtotal: 763SAR
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