The microcontroller requires 2 to 5.5V DC power supply, which can be easily provided by batteries or auxiliary power sources. However, in some cases, microcontroller-based products must operate directly from 120 or 220V AC power outlets without using a step-down transformer or resistive voltage drop. Additionally, polyester/ polypropylene film capacitors rated for AC power can … Read more
In response to many teachers reporting that the makeU device, especially during competitions, experiences shutdowns when reading, leading to a poor user experience. To improve this situation, the makeU device has undergone a firmware upgrade. Let’s take a look at the specific operation process for the firmware upgrade. 1. Download the firmware upgrade software Download … Read more
Microcontroller The minimum system consists of the external connections of the chip, including the clock circuit, reset circuit, and power supply, forming a basic application system. It mainly includes the clock circuit and reset circuit. The microcontroller consists of a central processing unit (including some special function registers), internal RAM, program memory, various peripherals (I/O … Read more
Recently, a robot made independently by an 18-year-old high school student has gone viral. It can help carry bags, track objects both indoors and outdoors, and even follow in the dark without any issues; it can even be used as a ride. From principle determination, shape design, circuit connection, to code writing, the entire process … Read more
As we know, I compiled an article in December 2018 comparing the electrical architecture of the three mass-produced Tesla models (click Evolution of Tesla’s Electronic and Electrical Architecture to jump), which mentioned the “ring network” when discussing Model 3, namely the Zone Controller (Zone Controller, refer to “BEG Evolution of EEA (2017)”). We will temporarily … Read more
Failure phenomenon: A “San’an” brand low-speed electric vehicle experienced a malfunction when the driver mistakenly disconnected the air switch controlling the main power supply while going downhill, causing the brushless DC motor to generate back electromotive force due to overspeed that could not be absorbed by the battery, resulting in damage to the controller due … Read more
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
AD Package Library Components Collection:Package Library Resource Directory: This design is based on the 51 microcontroller temperature and humidity controller system design (Proteus simulation + program + schematic + component list + simple report) Schematic: Altium Designer Simulation diagram Proteus 7.8/8.9 (theoretically can be opened with versions higher than 7.8) Program compiler: Keil 4/Keil 5 … Read more