Microcontroller peripheral circuit_Lao Wu microcontroller actual combat

Beginners start with the development board + marquee. Although the program was successfully run, I was still confused;
in this album, starting from 0, the common hardware peripheral to the microcontroller is classified, analyzed, and physically tested.
It allows everyone to see how the microcontroller drives each piece of hardware, what the driving principle is, and what the driving conditions are.
Although it cannot make everyone proficient in hardware, it can give everyone an idea and know in which category to choose the model. As for having no clue.

• Chapter 1：Preface (10 minutes and 43 seconds)

• Chapter 2：Use of soldering iron (19 minutes and 4 seconds)

• Chapter 3：Microcontroller power supply design (22 minutes and 41 seconds)

• Chapter 4：Analysis of MCU AD reference voltage source (12 minutes and 27 seconds)

• Chapter 5：TL431 circuit analysis (14 minutes and 50 seconds)

• Chapter 6：Analysis of internal circuit of microcontroller pins (13 minutes and 39 seconds)

• Chapter 7：drive buzzer (7 minutes and 41 seconds)

• Chapter 8：Microcontroller driven relay (10 minutes and 23 seconds)

• Chapter 9：Microcontroller display output device (8 minutes and 48 seconds)

• Chapter 10：Assemble ammeter test yourself (5 minutes and 56 seconds)

• Chapter 11：Microcontroller input device-buttons (10 minutes and 3 seconds)

• Chapter 12：Soldering chip demonstration (7 minutes and 47 seconds)

• Chapter 13：Voice module test 1 (22 minutes and 35 seconds)

• Chapter 14：Voice module test 2 (12 minutes and 41 seconds)