Hi ,
This video is a series of 20 single transistor projects for beginners.

◾ Time stamps

00:00 Super LED Blinking | How To Make Super LED Flasher Circuit
03:04 How to make LED chaser circuit with NE555 IC and BC547 Transistor
08:16 How to make clap switch at home
11:00 How to make automatic night lamp | USB night lamp
13:56 Use BC547 Transistor as an IR Sensor
16:43 How To Make a Proximity Sensor Using BC547 NPN Transistor
19:48 LED Flasher Using BC547 Transistor and LDR
23:23 How to make reed switch | Magnet control switch
24:55 Simple Electronic Project Using BC547 Transistor | LED Flasher circuit
26:18 How to make breathing LED circuit
30:31 Super LED Blinking
32:25 NO IC 6 Channel LED chaser Using BC547 and BC557 Transistor
35:42 How to make flip flop Using BC547 Transistor
38:36 Amazing DIY idea Using BC547 Transistor
41:50 LED RUNNING BOARD LIGHTS Circuit
44:16 How to make Bike Sequential Turn Signal Indicator
47:33 Simple Electronic Project Using BC547 Transistor
48:20 Wireless Tester | AC Line Detector
51:24 LED Chaser Circuit
54:10 3.7V Lithium battery charge low and full indicator circuit