2N2222 NPN Transistor as a switch - Arduino example with LED Flash

How to use the 2N2222 NPN transistor as a switch. The video will go over the use of the 2N2222 transistor to switch a bright LED Flash on and off. We will first switch the 2N2222 using a push button, and then will transition to test with with an Arduino.

*Note that the LED flash used in this example is a ready-to-use component with a built-in resistor, which is why a separate resistor is not needed.

Related Blog Post: www.diyengineers.com/2020/12/17/2n2222-transistor-npn

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Chapters:
0:00 Intro
0:29 Example Info
1:58 Circuit and Breadboard (without Arduino)
4:35 Math/Analysis
6:54 Test 1 (without Arduino)
7:15 Voltage & Current measurements
10:11 Circuit & Breadboard (with Arduino)
12:57 Arduino code
13:48 Test 1 (with Arduino)