USB 2.0 Dock (Liu Liu)

PDF_USB2.0 Dock (Liu Liu).zip

Altium_USB2.0 Dock (66).zip

PADS_USB2.0 Dock (66).zip

BOM_USB2.0 Dock (66).xlsx

96457

logi-m570

Logitech M570 compatible forward/backward micro-board, can be used to replace the original micro-board.

The Logitech M570 is compatible with forward/reverse micro-boards and can be used to replace the original micro-board.
 
There's only one reason I got this: when I was replacing the surface-mount microswitch, the solder pads fell off…

PDF_logi-m570.zip

Altium_logi-m570.zip

PADS_logi-m570.zip

BOM_logi-m570.xlsx

96458

GD32E230 core board

Case studies from the textbook "LCSC EDA (Professional Edition) Circuit Design and Fabrication Quick Start Guide"

The textbook "LCSC EDA (Professional Edition) Circuit Design and Fabrication Quick Start Guide"
uses the GD32E230 C8T6 as the main control chip
 
in its video tutorials.

"Quick Start Guide to Circuit Design and Fabrication" - Co-published with Shenzhen University. 7z

PDF_GD32E230 core board.zip

Altium_GD32E230 core board.zip

PADS_GD32E230 core board.zip

BOM_GD32E230 core board.xlsx

96459

Bluetooth proximity switch_XY-MBF12 base plate

Shenzhen Xinyi Information Technology Co., Ltd. XY-MBF12 Bluetooth proximity switch baseboard, special pins have been brought out.

I. Shenzhen XinYi Information Technology's XY-MBF12 Bluetooth proximity switch baseboard features an exposed power supply, serial port, and special pins. These pins
  allow for configuration via a serial port assistant, enabling seamless connection. For example, when a person approaches a door, their mobile phone automatically connects to the module via Bluetooth, triggering a special pin to open the door without contact. The initial Bluetooth connection password can be configured via the serial port assistant, and connections from unknown mobile devices can be prevented, significantly enhancing security.
II. Module Introduction:  
  The XY-MBF12A module is based on the FR8012HAQ chip from Freqchip Technology Co., Ltd. The FR8012HAQ is a low-power Bluetooth chip designed for easy and rapid development in a System-on-Chip (SoC). Supporting Freqchip's Bluetooth smart firmware and protocol stack, it is fully compatible with the Bluetooth V5.1 (LE mode) protocol. Users can also develop various applications based on the chip's built-in ARM Cortex-M3 embedded 32-bit high-performance microcontroller. It is mainly used in smart wearable devices, portable medical devices, sports and fitness equipment, smart homes, consumer electronics, and industrial control, meeting the requirements of low power consumption, low latency, and short-range wireless data communication. The XY-MBF12A transparent transmission module allows developers to develop smart products that support Bluetooth Low Energy communication without needing to understand the Bluetooth Low Energy protocol, using a serial communication-like method.
 
 III. When a mobile phone connects to this module via Bluetooth, a special pin on the module will activate; the activation timing can be configured via the serial port command sending instructions in the module's datasheet.
IV. AT command set
 
 
. V. It has been physically verified and is feasible.
 

PDF_Bluetooth Proximity Switch_XY-MBF12 Base Plate.zip

Altium Bluetooth Proximity Switch XY-MBF12 Base Plate.zip

PADS Bluetooth Proximity Switch XY-MBF12 Base Plate.zip

BOM_Bluetooth Proximity Switch_XY-MBF12 Base Plate.xlsx

96460

Air100 Synchronous Rectification BUCK-MPPT Solar Controller

This project supports a PV input voltage range of 8-42V, a maximum charging current of 10A, and uses the fixed voltage method MPPT algorithm program. The serial port screen displays the button parameter settings.

1. The circuit section
  uses the Heze Air001 32-bit MCU chip, costing approximately 0.5 yuan. It employs an EG2104 MOSFET for gate drive and a 321 single-channel op-amp for low-side current acquisition.
2. The program section
  uses the MCU's built-in 12-bit precision ADC for voltage, current, and temperature acquisition. A sorting and filtering algorithm is added to improve ADC accuracy. Charging control uses a fixed-voltage MPPT algorithm with closed-loop control, reducing power consumption over temperature and stopping charging when the temperature exceeds the limit. It supports various battery types and constant-current charging.