Step A:	open the URL given on browser and run the simulation.

1_uno_BLINK		https://wokwi.com/projects/344891652101374548
2_uno_BUTTON		https://wokwi.com/projects/375237011181407233
3_uno_bUZZER		https://wokwi.com/projects/384022688770428929
4_uno_RGB		https://wokwi.com/projects/401130610806056961
5_uno_7SEG		https://wokwi.com/projects/396648798989155329
6_uno_OLED		https://wokwi.com/projects/365718993906978817
7_uno_16x2_LCD		https://wokwi.com/projects/376333660329115649
8_uno_DHT22		https://wokwi.com/projects/376363354172571649
9_uno_SERVO		https://wokwi.com/projects/344891730528567891
10_uno_KNOB		https://wokwi.com/projects/344892191015961170
11_uno_LDR		https://wokwi.com/projects/378741126335149057
12_uno_ULTRASONIC	https://wokwi.com/projects/290056311044833800



step B:	base on the given circuit connection, assembly it on actual UNO board.


step C:	connect the Arduino UNO to PC and flash the related hex file to UNO board.