1. Design Concept: Initially, power is supplied to the microcontroller via a manual key. The power indicator LED4 lights up, indicating that the microcontroller is running, and Relay 2 works to power the microcontroller. The working time of Relay 2 is set via a button, allowing the system to automatically cut off power. The working … Read more
1. Design Concept: Initially, power is supplied to the microcontroller via a manual switch. The power indicator LED4 lights up, indicating that the microcontroller is running and relay 2 is activated to supply power to the microcontroller. By pressing the button, the working time of relay 2 can be set to achieve automatic power-off, and … Read more
Q: How can I receive such great articles for free every day? A: Just click on the above “51 Microcontroller Learning Network” to follow for free! My bedside fan’s mechanical timer is broken, so I designed a simple timer controller using the 51 microcontroller. The program has been initially debugged on the experimental board, and … Read more