The composition and working principle of the micro thermal printer based on NUC501MCU are analyzed in detail, and the design and implementation of thermal head overheat protection and stepper motor drive module are given.
This article develops and implements a WiFi module based on STM32 on an embedded development platform. Combined with the above new concepts of the Internet of Things, it enables users to monitor the environment in real time through the network. This system enables users to grasp and control the situation they want to know in real time. Home information (temperature and humidity information, light information, PM2.5) is obtained through various sensors, and users can control this information on the Android interface.
Infrared and wireless remote control simulation schematic diagram and microcontroller program based on Proteus, Proteus infrared simulation example and Proteus microcontroller simulation program
Electronic photo album based on STM32F103RC (schematic diagram, PCB source file, program source code and production).
Every house has a doorbell. When a visitor arrives at a home, he looks for the doorbell switch and rings it to let us know his presence. What if a person coming to your home cannot find the doorbell, or the person is too short to reach the doorbell? The object detection circuit installation below is for reference. The circuit will automatically sense the presence of a person and ring the doorbell.
Chhavi is a tiny, wireless, touch capacitive fingerprint sensor with high-end security features, support for ultra-low power operation and optional NFC connectivity. Its open source firmware is fully compatible with the Arduino IDE. Chhavi is powered by ESP32 and features an FPC BM-Lite fingerprint sensor by Fingerprints, giving you and your projects access to the excellent biometric hardware found in many smartphones. Unlike optical fingerprint sensors that are large and power-hungry, this capacitive biometric sensor is small, accurate, and energy-efficient. During our design process, we determined that NFC communication would be a powerful feature for many of the same applications that might require a high-quality fingerprint sensor, but we could not find a major ESP32-driven NFC controller. So we built one into Chhavi as an optional feature. We've also added an optional battery to simplify installation and facilitate mobile deployment. The result is a tiny device with a cutting-edge fingerprint reader, Wi-Fi and Bluetooth capabilities, as well as support for NFC and battery power when needed.
An air purifier based on stm32f103rct6 chip can measure temperature and humidity and control fans.
Introducing an application solution for Bluetooth products that is very common in everyone's life, a Bluetooth selfie stick application developed based on the MM32W series.
Kinetic Digits is a mechanical flipping digital display, consisting of 448 7-segment digital tubes, simulating the effect of water flow. For various effects, it can be produced with the help of the provided host computer.
This design is an intelligent desktop interactive robot. As the name suggests, it is an intelligent robot that can interact with people. A 2.4-inch LCD screen is used as an important channel for human-computer information interaction. It also has voice recognition and sound playback functions, making contactless interaction more convenient. The interface design adopts the open source LVGL 8 GUI framework and uses ESP32S3 as the main control chip. The current regional temperature can be displayed on the interface, and the sound can be broadcast through voice interaction. It also displays the dynamics of the EEWORLD forum, including the display of the daily number of posts and the total number of posts. Through voice interaction, the voice broadcast of the total number of posts can also be obtained. . And the onboard LED lights can be controlled by voice.
Based on STM32 crowd positioning, speed-adjustable smart fan design (program, design report, video demonstration).
Multifunctional mini computer (SD, wifi, OLED) design source code and related test programs
icebreaker++ is a very nice and convenient little board. But it has a small flaw, the ice40 FPGA it uses is very simple, and it's generally fun to see people doing exciting projects with 5k LUTs. Sometimes it's convenient to have some extra space available when experimenting.
51 microcontroller countdown 120 seconds C program
USB HID keyboard, mouse and game controller based on stm32 and mpu9250.
The main function of the electronic perpetual calendar is to display the Gregorian year, month, day, week, [hour] hour, minute, second and the lunar month and day. When displaying the lunar time, it can indicate whether it is a leap year.
In theory, it could connect to Google Calendar and show today's events while still being ongoing. Also on the list of features to be implemented is a switch or sensor that changes mode when the pen is removed, and buttons or touch controls for the user interface.
Mouse circuit diagram, PCB and source code based on CY7C63723/CY7C63722 chip
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