QR code recognition source code based on STM32 + QR code decoding library lib

QR code recognition source code based on STM32 + QR code decoding library lib

Schematic PCB

Electronic photo album based on STM32F103RC (schematic diagram, PCB source file, program source code and production)

Electronic photo album based on STM32F103RC (schematic diagram, PCB source file, program source code and production).

Schematic PCB

Based on STM32 crowd positioning, speed-adjustable smart fan design (program, design report, video demonstration)

Based on STM32 crowd positioning, speed-adjustable smart fan design (program, design report, video demonstration).

Schematic PCB

Smart light based on stm32 nucleo_L476 (operating instructions + source code)

Smart light based on stm32 nucleo_L476 (operating instructions + source code).

Schematic PCB

The first prize of the electronic competition, the elderly health monitoring smart watch (STM32F4 master).zip

The first prize of the electronic competition, the elderly health monitoring smart watch (STM32F4 master control).

Schematic PCB

(Third Prize in ST Competition) Ultrasonic Selfie Artifact

(Third Prize in ST Competition) Ultrasonic Selfie Artifact.

Schematic PCB

51 microcontroller electronic keyboard design

Electronic keyboard design based on 51 microcontroller.

Schematic PCB

Thermometer MLX90615-STC89C52

Very good reference document. MLX90615 communication value, lcd1602 display, 51 driver

Schematic PCB

Heart-shaped running water lamp program and circuit

Heart-shaped running water lamp program and circuit.

Schematic PCB

Intelligent time control switch based on 51 microcontroller 12232 display

This product has been verified for use and is the best stable program after debugging.

Schematic PCB

Real-time clock made by STC90C54RD+SD2405ALPI

I have an SD2405ALPI-G on hand, and I happen to have an STC learning board, so I made a clock with an annual error of about 2.5 minutes to play with. The schematic and program are all there. Now the hardware has a ringtone generating chip and a power amplifier chip, but the program has only initially implemented the function of displaying the day of the week, hours, minutes and seconds. It will be changed to an alarm clock when there is time.

Schematic PCB

51 microcontroller clock

51 single-chip machine clock

Schematic PCB

51 microcontroller touch desk lamp

Touch table lamp made by 51 microcontroller

Schematic PCB

51 single chip electronic thermometer

51 single chip electronic thermometer

Schematic PCB

Designing electronic password lock using PIC microcontroller

This article introduces the electronic code lock made with PIC16F84 microcontroller. The PIC16F84 microcontroller has a total of 18 pins and 13 available I/O interfaces. The chip has a 1K×14 FLASHROM program memory, a 36×8 static RAM general register, a 64×8 EEPROM data memory, and an 8-level deep hard stack.

Schematic PCB

Simple and practical fully automatic hand dryer

The author has designed a circuit controlled by a microcontroller, and can easily create an automatic hand dryer with a commonly used hair dryer. In addition to the above functions, it also has flashing lights and crisp audio prompts.

Schematic PCB

Using single-chip microcomputer AT89C51 to transform ordinary double-tub washing machine

Ordinary double-tub washing machines have a large number of users because of their low price and durability. However, as people's pace of life accelerates, there are many inconveniences when using this kind of washing machine to wash clothes: you need to add water before washing clothes, which takes about 2 to 3 minutes. Many friends can't stand the "torture" of time and go about other things. They often forget to turn off the water, causing a lot of waste. When washing clothes, turning the timer can usually wash for up to 15 minutes. Most users don't do this process. He will stay by the washing machine. When the timer ends, he cannot time the time or rinse again in time. Sometimes he even forgets how long he has been washing, which greatly prolongs the washing time. He cannot leave people while rinsing. Someone must be involved in the whole process. Very inconvenient. This article introduces a method of using the AT89C51 microcontroller to transform an ordinary double-tub washing machine. After the transformation, the entire process of water inlet, washing, rinsing, and drainage can be completed automatically. Multiple washing and rinsing methods can be selected, and single washing, single rinsing, and Manual function, very convenient.

Schematic PCB

Intelligent non-contact infrared electronic thermometer with voice broadcast

The program is written in C language and contains MLX90614 temperature measurement, OLED driver, and 4004-8 voice chip driver. The entire system is user-friendly. The user can choose voice broadcast or OLED display, low temperature or over-temperature alarm, and forehead skin function. Conversion formula from temperature to real body temperature (the formula has been verified by actual measurements and has high accuracy). The entire system has been verified to be feasible, and the measurement results were compared with electronic thermometers on the market, with an accuracy higher than 98%.

Schematic PCB

Fully automatic washing machine program and circuit diagram

Fully automatic washing machine program and circuit diagram

Schematic PCB

51 microcontroller countdown 120 seconds C program

51 microcontroller countdown 120 seconds C program

Schematic PCB