Manufacturing circuit diagram of simple timing small ceiling fan

Note: this small ceiling fan can be timed for 15 ~ 60min.   1、 Working principle circuit The principle is shown in Figure 1 below. The left side of the dotted line is the original circuit of the micro ceiling fan and the right side is the new timer circuit. When the ceiling fan manual switch […]

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Schematic diagram of basketball timing and scoring system

There are a lot of keyboards. Only six are used. Two independent keyboards with interrupt ports and four matrix keyboards are used to adjust the score.   Relevant source programs can be obtained by clicking the following link:Source c code: basketball game application system

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STM32 MCU uses timer interrupt to realize the design of millisecond delay

Because STM32 Hal library only has Hal_ Delay() is a millisecond delay. In order to achieve accurate microsecond delay, systick has to be modified. However, due to the internal use of Hal library as timeout judgment and other operations, unexpected errors will occur in its modification, so it is not recommended to modify it. Therefore, […]

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