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

Schematic PCB

Gameduino 3X Dazzler: Arduino expansion board for gaming and audiovisuals with GPU, FPGA, HDMI and Python support

The Gameduino 3X Dazzler is an Arduino-compatible expansion board that outputs high-definition images and sound to any HDMI monitor or TV. Dazzler is great for game designers using Arduino or CircuitPython, makers who want rich, responsive data and text visualizations, and anyone who wants great visuals for their Arduino projects.

Schematic PCB

2018 Electronic Competition Question F-Wireless Microphone Amplification System (Dalian University of Technology)

Schematic PCB

Realizing LED reading of remote control key values ​​based on microcontroller (program and circuit diagram)

Microcontroller realizes the program of LED reading remote control key value

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

Twonkie: Open Source USB-PD Sniff, a USB-PD sniffer based on Google Twinkie

Supports data monitoring and PD packet injection on CC1 and CC2 lines, and voltage and current detection on VBUS and VCONN.

Schematic PCB

Hamster Mix: Portable open source Bluetooth MIDI controller with Arduino and ESP32 (schematics, source code, etc.)

Hamster Mix is ​​a portable MIDI controller powered by Arduino that connects to MIDI via Bluetooth. It allows you to control effects and play MIDI notes in 5 octaves. Twelve keys and the ability to switch up and down through the octave make it easy to control the notes of an entire keyboard piano using our compact controller (about the size of a hamster). Hamster Mix connects to Mac, PC, Ipad and even mobile phones via Bluetooth. You can control any MIDI-enabled music program such as Ableton, Garage Band, FL Studio, Reaper, etc. Two additional buttons and two potentiometers allow you to set up your own custom effects. You can even use the buttons as a Bluetooth track launcher instead of a keyboard. You can control MIDI-enabled mobile applications such as GarageBand, FL Studio Mobile, Reason Compact, Audiokit Synth One, Moog applications, and more. Make music on the go with Hamster Mix, which fits in your pocket, meaning no wires or bulky equipment.

Schematic PCB

E-books based on Raspberry Pi microcontroller

This time it’s an e-book based on the Raspberry Pi.

Schematic PCB

Temperature and humidity monitor solution based on MM32W wireless MCU series

Introducing a Bluetooth application solution with rich usage scenarios - a temperature and humidity monitor developed based on the MM32W series.

Maker LED Display: Arduino programmable and internet-connected LED matrix display

Maker LED displays make using LED matrix displays easy. The ready-to-use, fully assembled circuit board has everything you need to run your monitor - just plug it in! Using and customizing the display is easy, with a specially written Arduino library and a dozen pre-made examples. The Maker LED display also has Wi-Fi so it can connect to the Internet to retrieve and display information. Choose between 32 x 9 pixel or 64 x 9 pixel versions and select LED color: white, blue, red, green, orange or violet.

Schematic PCB

esp32 TFT color screen projection

The color screen projection assistant uses the tcp protocol to send the computer screen to esp32 for processing and display in real time, with a theoretical frame rate of more than 10 frames

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

Electric vehicle charger source program based on ATmega48PA chip, including PCB board

The charger program written with STM8S003 has positive and negative pulses throughout the process, anti-reverse connection, scheduled shutdown during charging, and negative pulses to repair the battery later.

Schematic PCB

Fully automatic washing machine design

This article designs a fully automatic washing machine control system with the AT89C51 microcontroller as the core. This system realizes the control of the entire washing process of the washing machine, including the four stages of user program input, washing, dehydration and end alarm. Laundry control system based on AT89C51 microcontroller, the control panel consists of buttons, indicator lights and LCD display. The buttons select the working mode of the washing machine and the start and pause functions. The indicator lights work with the buttons, and the LCD display shows the working mode of the washing machine. The overall circuit module of the washing machine includes four independent keyboards, indicator lights, motor control and LCD display.

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Electronic scale solution, schematic diagram and program based on AT89C51

Electronic scale solution, schematic diagram and program based on AT89C51

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5509A recording schematic diagram

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Electronic dice source program list (assembly language)

Electronic dice source program list

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Infrared remote control Proteus simulation circuit transmitting and receiving program

Infrared remote control Proteus simulation circuit transmitting and receiving program

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Automatic clock-in and walking timing system based on face recognition (K210, nRF52832)

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51 Make a perpetual calendar (schematic diagram, program)

51 Make a perpetual calendar (schematic diagram, program)

Schematic PCB