Electric vehicle charger schematic diagram (UC3842+LM324+TL431)
As a new modern invention, intelligence is the future development direction. It can operate automatically in an environment according to a preset mode without human management. It can be applied to scientific exploration and other purposes. Intelligent electric vehicles are one embodiment of this. The simple smart electric vehicle designed this time uses the AT89S52 microcontroller as the detection and control core of the car; the metal sensor TL-Q5MC is used to detect the iron pieces sensed on the road, thereby sending the feedback signal to the microcontroller, so that the microcontroller can follow the predetermined The working mode controls the car to drive at a predetermined speed in each area, and depending on the working mode selected by the microcontroller, the car can also be controlled to drive along the S-shaped iron piece; the Hall element A44E is used to detect the car's driving speed; the 1602LCD is used to display the car's driving time in real time , after the car stops driving, the car’s driving time, driving distance, average speed and driving time in each speed zone will be displayed in turn. This design has a simple structure and is relatively easy to implement, but it is highly intelligent and humane, and reflects intelligence to a certain extent.
Boost circuit design reference based on LM2577 (including circuit diagram)
The principle of electronic load is to control the conduction of internal power MOSFET or transistor, and it is a device that consumes electric energy by dissipating power of power tube. Its basic working methods include constant voltage, constant current, constant resistance and constant power. This design starts from the analysis of the DC electronic load system solution, discusses the hardware circuit and software implementation of the entire system in detail, and gives a more reasonable solution. In order to facilitate the realization of control and expansion of functions, the STC89C52 microcontroller is used as the core controller, and the DA output control circuit, AD voltage and current detection circuit, keyboard circuit, display circuit and drive circuit are designed. Through the coordination of software and hardware, the the entire design. The gate voltage of the MOSFET is controlled through the operational amplifier, PI regulator and negative feedback control loop, thereby achieving changes in its internal resistance. This control loop is the core essence of the entire circuit. The MOS tube here serves as both a current control device and a load for the power supply under test. By controlling the conduction of the MOS tube, its internal resistance changes accordingly, thereby achieving a constant current flowing through the electronic load and achieving a constant current working mode. This design can realize constant current control of electronic loads: it can detect the current, voltage and power of the power supply under test and display it on the liquid crystal. Under the rated usage environment, in constant current mode, no matter how the input voltage changes (within a certain range), the electronic load will absorb current according to the set value, and the current flowing through the electronic load will be constant.
Mobile phone solution description + schematic diagram + BOM
Electronic code lock design (schematic diagram + program)
Mouse circuit diagram, PCB and source code based on CY7C63723/CY7C63722 chip
Microcontroller realizes the program of LED reading remote control key value
The microcontroller production contains schematic pcb diagram source program simulation files
Color TV circuit schematic diagram LA76930+PW1225
This article introduces the framework structure and component modules of the design as well as the principles of each module. It also introduces the hardware design of each part, the software design of each part, and the software flow chart. The design is an intelligent LED desk lamp integrating multiple functions with STC89C52 microcontroller as the control core. The desk lamp realizes the function of automatically detecting whether there is someone in the room and automatically turning on/off; the desk lamp brightness has an adjustment function; it has a time display function; it has a temperature display function; and it has an alarm function. The hardware design is divided into eight parts, including the microcontroller control module, button module, desk lamp module, temperature module, clock module, alarm module, display module, and infrared sensing module. The microcontroller control uses STC89C52, the display module uses LCD1602C liquid crystal to display temperature, time, date, etc., the button module is used to adjust time, date, LED brightness, etc., the clock uses DS12C887 clock chip, and the desk lamp module uses 16 LEDs and uses a buzzer. The device emits an alarm sound, the temperature sensor uses a DS18B20 chip, and the human detection device uses a BIS0001 infrared thermal sensor. The software design is written in microcontroller C language and realizes all control functions.
UDP test based on STM32 and network chip W5200
Including schematic diagram and source program download, the microcontroller is PIC12F629.
When the password is 4321, perform the corresponding correct password action, otherwise it will not be performed.
The network card driver and LWIP protocol transplant program source code for the Ethernet communication module based on LPC2138 and DM9000AE written by myself.
Detailed description: Ultrasonic range finder (including schematic diagram, program source code and related debugging instructions, as well as some reference materials, in short, a complete set of information for developing ultrasonic range finders)
Version V0.2 Completed and verified functions: 1.GPS receiving function 2. Self-detection function 3. Login to server function 4. Reconnect to server function
Solemn statement: This is an open source product and can only be used for learning and communication. Commercial use is strictly prohibited, otherwise we will pursue legal liability. Your use of our source code indicates your acceptance of this statement. Qdso is a well-designed pocket oscilloscope with 40M bandwidth, 200M sampling rate and 3.5-inch TFT color screen. The overall design controller uses nios ii soft core; AD9288-100 cross sampling rate reaches 200M real-time sampling, and the display part uses RA8872 that supports double buffering and 2D drawing acceleration to achieve high-speed waveform drawing and display. And we will make the source code and detailed tutorials public for everyone to DIY and learn from.
CAN bus multi-machine communication technology source program based on STM8S203 microcontroller-CAN (multi-machine communication)
Wireless radio frequency module source program based on STM8S105c6t6 microcontroller
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