DC-DC step-down 12V to 5V dual USB car power converter 3A 15W

ProsKit 8PK-366N-G Desoldering Pump Piston with Double Oil Seals

Three wire 0.28 inch dc 0v to 100v digital voltmeter

DFPlayer Mini MP3 Player Module MP3 Voice Decode Board Supporting TF Card U-Disk IO/Serial Port/AD MP3-TF-16P for Arduino UNO  

1/2W 1% (1.2Ω- 1MΩ) Metal film Resistors Kit 50 values each 10 pcs total 500 Resistors

CD4050 Non-Inverting Buffer IC

hi link 5v 2a HLK-10M05 AC 220v to 5v 2a 10w

15cm female to female jumper wires 10 wire per set

10cm male to female jumper wires 10 wire per set

10cm male to male jumper wires 10 wire per set

Arduino is an open-source physical computing platform based on a simple i/o board and a development environment that implements the Processing/ Wiring language.  

560nF (564) 50V Leaded MLCC Ceramic Capacitor