An environmental temperature and humidity monitor based on the STC8H8K64U in an LQFP32 package was designed. The project's functions include, but are not limited to, all I/O interfaces of the chip being brought out (for easy secondary development), serial port, IIC OLED 4-wire leadout, interface leadout corresponding to the DHT20 pin of the temperature and humidity sensor, serial communication indicator LED, LED testing on the P3.5 pin, USB program download (P3.2 ground button, OFF button), etc.
1. Optimized component layout, simplified size
2. Added power output interface
3. Optimized serial communication interface
The front and back views of the development board are shown below.
The program is downloaded, and the current environmental temperature and humidity information is obtained through the DHT11 and displayed on the IIC OLED.
The Dikuoxing STM32F103C8T6 development board expansion board, combined with IIC OLED, enables simple oscilloscope functions, etc.
The Dikuoxing STM32F103C8T6 development board expansion board, combined with IIC OLED, enables simple oscilloscope functionality. Expansion pins support IIC communication device connections such as OLED screens, DHT11 sensors, and DS18B20 temperature sensors. Expansion pins also support serial communication device connections, and can be expanded with wireless WiFi or Bluetooth communication, such as ESP-01S module access, Home Assistant remote reading and control. The full pin expansion of the development board provides robust support for connecting and remotely controlling more modules and devices.
Oscilloscope functionality demonstrations and
PCB board soldering demonstration
videos are attached.
The Zhaoqing University campus map NFC card, designed by ZQU Intelligent Car Fleet
, is sized like a standard student card. It features a black/white solder mask, with gold-plated pads and wires.
It houses the NFC chip pads, LED indicator, and current-limiting resistor, all in a 0603 package.
(Statement: Thank you for choosing our NFC card as a promotional gift. To ensure your safety and rights during use, we hereby issue the following disclaimer. Please read and understand the following carefully:
1. Risk Warning: This NFC card is intended for promotional and information display purposes. The information stored within may involve links to specific applications or services, data, etc. Due to differences in user environment, device compatibility, and operating methods, we cannot guarantee seamless integration and a perfect experience for all users. Therefore, when attempting to transfer the card content to other devices, you need to have certain technical knowledge and hands-on skills, and bear the risks arising therefrom.
2. Security Responsibility: During operation, please ensure that you follow relevant security regulations to avoid damage to your personal information security and device. We are not responsible for any data loss, device damage, or other security issues caused by improper operation.
3. Technical Support Limitations: This product is a one-time promotional gift and no subsequent technical support services are provided. If you encounter any problems during use, we suggest you refer to the accompanying user manual or seek professional help.
4.) Copyright and Privacy: Please respect intellectual property rights and personal privacy rights. Do not use this NFC card for illegal activities or to infringe upon the legitimate rights and interests of others. We reserve the right to pursue legal action against users who violate laws and regulations.
5. Disclaimer: Under no circumstances (including but not limited to product quality issues, operational errors, third-party software compatibility issues, etc.) shall we be liable for any direct or indirect losses arising from the use of this NFC card. This includes, but is not limited to, property damage, personal injury, and compensation for mental distress.
6. Final Interpretation: The final interpretation of this disclaimer rests with Intelligent Fleet. We have the right to modify and improve this statement according to actual circumstances, and the modified terms shall take effect from the date of publication.
Thank you again for your understanding and support! We hope our NFC card brings you a pleasant experience and wonderful memories!
(Disclaimer: Thank you for choosing our NFC card as a promotional gift. To ensure your safety and rights during use, we hereby issue the following disclaimer. Please read and understand the following content carefully: 2. Security responsibility: During the operation process, please ensure compliance with relevant security regulations to avoid damage to your personal information security and equipment. We are not responsible for any data loss, equipment damage, etc.) damage, or other security issues caused by improper operation. Technical Support Restrictions: This product is a one-time promotional gift and does not provide any subsequent technical support services. If you encounter any problems during use, we recommend that you refer to the accompanying instructions or seek professional assistance. 4. Copyright and Privacy: Please respect intellectual property and personal privacy rights, and do not use this NFC card for illegal activities or infringe on the legitimate rights and interests of others. We reserve the right to pursue legal responsibility for user behavior that violates laws and regulations.5. Free Scope: Under no circumstances (including but not limited to product quality issues, operational errors, third-party software compatibility issues, etc.) shall we be liable for any direct or indirect losses arising from the use of this NFC card, including but not limited to property damage, personal injury, compensation for mental damages, and all other consequences.6. Final interpretation right: The final interpretation right of this disclaimer belongs to Intelligent Fleet. We have the right to modify and improve this statement according to the actual situation, and the modified terms. shall take effect from the date of publication.Thank you you again for your understanding and support! I hope our NFC card can bring you a fast stealing experience and beautiful memories）
PDF_Zhaoqing University Campus Map NFC Card.zip
Altium_Zhaoqing University Campus Map NFC Card.zip
PADS_Zhaoqing University Campus Map NFC Card.zip
BOM_Zhaoqing University Campus Map NFC Card.xlsx
91776
SimpleFOCShield v3-Redesigned
Redesigned based on the official LCSC EDA project SimpleFOCShiled
for compatibility with Arduino Uno
Arduino SimpleFOC Expansion Board v3.2
New Version. The official LCSC EDA project
Hondomachi redesigned it on October 9, 2024.
Features
: Plug and Play: Works with the Arduino SimpleFOC library - GitHub.
Low Cost: Priced at €15-30 - View Price
Online. Current Sensing: Up to 5 Amp bidirectional
ACS712 Hall current sensor
. Integrated 8V Regulator:
Enable/Disable via pads
. Absolute Maximum Ratings - Designed for gimbal motors with internal resistance >10 Ωs.
Maximum Current: 3A,
Maximum Input Voltage: 35V
. Stackable: Runs 2 motors simultaneously.
Encoder/Hall Sensor Interface: Integrated 3.3kΩ pull-up resistor (configurable).
I2C Interface: Integrated 4.7kΩ pull-up resistor (configurable)
. Configurable Pin Arrangement: Hardware Configuration - Solder Connection.
Arduino Connectors: Arduino UNO, Arduino MEGA, STM32 Nucleo Board...
Open Source:
Fully LCSC EDA. Design: LCSC EDA Project.
PDF_SimpleFOCShield v3-Redesigned.zip
Altium_SimpleFOCShield v3-Redesigned.zip
PADS_SimpleFOCShield v3-Redesigned.zip
BOM_SimpleFOCShield v3-Redesigned.xlsx
91777
USB 3.1 gen2 docking station with Type-C input based on VL822
Based on VL822, this is a USB 3.1 gen2 1-to-4 expansion dock with Type-C input.
This project uses the VL822 as the main controller, which supports USB 3.1 Gen 2 speeds (10GB/1s).
The external power supply utilizes a Huawei PW22 module to convert 12V to 5V (this module is not required if the computer has sufficient power). Two diodes isolate the computer and the module to prevent interference.
The test speed was quite ideal, close to the USB 3.1 Gen 2 limit. The test equipment consisted of a Hikvision 512GB hard drive and an enclosure.
PDF_USB3.1 gen2 docking station with VL822-based input typeC version.zip
Altium_VL822-based USB 3.1 gen2 docking station with type-C input.zip
PADS_VL822-based USB 3.1 gen2 docking station with type-C input.zip
BOM_USB3.1 gen2 docking station input type-C version based on VL822.xlsx
91778
WS2812 Dot Matrix Light
This is a dot matrix light made using a ws2812b. It was created as a training project for the association and is 4x4 in size to make it easy for beginners to solder and learn.
I. Design Rationale:
Considering this is a beginner's first project, the difficulty needed to be limited; therefore, this 2812 dot matrix light was designed.
II. Wiring Design and Arrangement:
Double-layer wiring was used, with the 2812 colored lights arranged sequentially from left to right.
III. Physical Verification
Video: See attachment.
cde21913d849d78a0cb8c021097d8cf9.mp4
PDF_WS2812 Dot Matrix Light.zip
Altium_WS2812 dot matrix light.zip
PADS_WS2812 Dot Matrix Light.zip
BOM_WS2812 Dot Matrix Light.xlsx
91779
WS2812 Pet Light-Up Collar
Cost: Air001 chip 0.01; WS2812 LED beads 1 yuan each; battery 2 yuan; other components approximately 0.3 yuan each;
Video Link:
Bilibili Video -- Function Demonstration and
Project Introduction
This design primarily utilizes the Air001 chip and WS2812 LED beads to create a pet light-up collar. It features a single button; long press to power on; single click to switch modes until power off; long press for stepless dimming while powered on; a flashing light indicates the maximum brightness.
**Cost:** Air001 chip 0.01; 12 WS2812 LED beads 1 yuan; battery 2 yuan; other components approximately 0.3 yuan; **
Lighting Effects:
** Timer Effect: 4 LEDs illuminate in a lap (Green: 30 minutes; Blue: 30-60 minutes; Yellow: 60-90 minutes; Red: 90 minutes and above)
Energy Saving Effect: Single LED illuminates in a lap (Green: 30 minutes; Blue: 30-60 minutes; Yellow: 60-90 minutes; Red: 90 minutes and above)
Fast Flash Effect:
Bounce Effect: Seven-color
Power-off Effect: 12 LEDs turn off sequentially
...
WS2812 Pet Light-Up Collar.mp4
PDF_WS2812 Pet Light-Up Collar.zip
Altium_WS2812 pet light-up collar.zip
PADS_WS2812 Pet Light-Up Collar.zip
91780
electronic
===========Updated October 11, 2024 v2.0 ================= 
The program is downloaded, and the current environmental temperature and humidity information is obtained through the DHT11 and displayed on the IIC OLED.
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