Intelligent classroom design based on 51 microcontroller (source program, schematic diagram, PCB, simulation, BOM, paper, etc.)

Use 51 microcontroller STC89C52, clock chip DS1302, liquid crystal screen LCD1602, photoresistor, and infrared tube to design a classroom intelligent lighting control system

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Design of motor speed measurement system based on microcontroller (defense version) complete graduation thesis with pictures and source program

This design mainly uses AT89C51 as the control core, which is composed of Hall sensor, LED digital picture tube, HIN232CPE level conversion, and RS232. The measurement speed system of the microcontroller and the serial communication between the PC and the microcontroller are introduced in detail. Give full play to the performance of the microcontroller. The focus of this article is to measure the speed and display it on the 5-digit LED digital tube.

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Stepper motor control based on 51 microcontroller - design report (instruction manual) and source program

Stepper motor control based on 51 microcontroller

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tCam-Mini: Wireless thermal imaging camera based on ESP32

tCam-Mini is a small wireless thermal camera designed and developed by Dan Julio based on ESP32, which allows users to easily obtain and use radiation data through the Flir Lepton 3.5 sensor. It can obtain the temperature of each pixel and perform various types of thermal imaging analysis; it can also convert the data into color images to display the temperature and shape of the human body through thermal imaging.

Schematic PCB

Pellicanus: an open source INS/GNSS navigation development board (schematics, software, etc.)

Pellicanus is an open source, RP2040-based INS/GNSS module that you can program using MicroPython, C or Rust. It allows you to add Vertical Reference Units (VRU), Attitude and Heading Reference Systems (AHRS), and INS/GNSS capabilities to a variety of platforms: cars, drones, autonomous vehicles, and anything else you need to track. We'll Pellicanus is designed as a 33x30 mm toothed module that can be easily integrated into your project. We also offer carrier boards with a variety of interfaces so you can evaluate the module and start development immediately.

Schematic PCB

Xiaoma Ge STM32F1 main control 720 hollow cup quadcopter information (including source code and related tutorials)

Xiaoma Ge STM32F1 main control 720 hollow cup quadcopter information (including source code and related tutorials)

Schematic PCB

Simple circuit to detect mobile phones

Cell phones typically send and receive signals in the frequency range 0.9 to 3GHz. This article provides a simple circuit that detects the presence of an activated mobile phone by detecting these signals.
The basic principle of the mobile phone detector circuit is to detect radio frequency signals. In Schottky diode circuits, Schottky semiconductors are used to detect mobile phone signals because of their unique properties of being able to correct low-frequency signals with low noise rates. When an inductor is placed near an RF signal source, it receives the signal through mutual inductance. This signal is rectified by a Schottky diode. This low-power signal can be amplified and used to power any indicator light, such as an LED in this case.

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Protues simulation example (8051)-PWM motor forward and reverse rotation

Protues simulation example (8051)-PWM motor forward and reverse rotation

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LD3320 speech recognition garbage classification design source program schematic diagram based on STM32

Start by saying the keyword "Trash"

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Smoke detector schematic and PCB source files and BOM

Smoke sensor design includes principle circuit design, PCB and BOM list

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2019 Electronic Competition Question D-Simple Circuit Characteristics Test-Design Plan and Report (National One, Nanjing University)

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2019 Electric Competition Question C National First Code (Line Load Is Fault Detection Device)

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Schematic diagram of the 34401A desktop 6.5-digit multimeter released on the Agilent official website

The schematic is in the appendix at the end of the document.

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ERASynth Micro: USB-powered, low-cost, open-source RF signal generator

ERASynth Micro is an open source signal generator with impressive features. Affordable for everyone including builders, hackers, students, amateur radio and SDR users. The ERASynth Micro is powered via the USB port and has an LCD interface for stand-alone use without the need for a computer or phone. It can generate low phase noise RF signals from 12.5 MHz to 6.4 GHz through a dual PLL architecture.

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2021 College Student Electronic Design Competition Topic A Outstanding Works Collection (Signal Distortion Measurement Device)

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Cynthion: Open Source Multi-Function USB2.0 High-Speed ​​Analyzer

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Complete set of information on dance robot program

This article introduces the whole process of design, production and debugging of a dancing robot.

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ReflowMaster: open source reflow master control based on the magic oven (schematic, PCB, gerber, source code, etc.)

Reflow Master Pro is designed to work in any oven - no algorithm adjustments required! That said, if you really want to tweak, you can switch from the classic Reflow Master algorithm to PID control and adjust your settings to your liking.

Schematic PCB

Pocket oscilloscope source code based on STM32, has been tested and passed

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.

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2018 Electronic Competition Question D-Gesture Recognition Device (Anhui University)

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