【Chang'an University】Roller measuring device-Han Yonglin

Introduction: Design and produce a roller measuring device. The roller uses cans with a diameter of 66mm and a height of 110mm. The measurement circuit is installed inside the drum (controlled and displayed at both ends of the drum) or outside the drum (controlled and displayed at the wireless communication terminal). The device can be used to measure parameters such as level, tilt, rolling, and rotation.

Schematic PCB

[Zhengzhou Technology and Business College] Wheelbarrow + Pea love to fight little zombies

Introduction: The stc15 chip is used to avoid the use of clock circuits and reset circuits. The design purpose is to be as small as possible and reduce the floor space.

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Arduino_card copy

Introduction: 111

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【Under Improvement】Glow motion sensor

Description: This sophisticated device uses a variety of detectors and advanced computer algorithms to identify moving enemy units. However, it takes a little time (practice) to use it effectively.

Schematic PCB

LYMK_0-0_

Introduction: This Bluetooth audio backplane module is a small but fully functional baseboard module designed for Qualcomm QCC3034, QCC5124, and QCC5125 core modules. It’s a modular decoding baseplate! ! !

Schematic PCB

[Tuya Smart] Temperature and Humidity Desktop Assistant

Introduction: A desktop assistant designed based on Tuya WIFI, which realizes real-time display of computer information, device linkage control, memo setting and other functions.

Schematic PCB

[Hangshun Training Camp] Multifunctional Keyboard

Introduction: Make a Bluetooth keyboard based on HK030, which is only used by PR, PS and other software. The game will have a high delay.

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nRF52832 development board

Introduction: The nRF52832 minimum system can use the nRF52810 48pin chip and is compatible.

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nRF52810 development board

Introduction: 32Pin nRF52810 development board

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Three-mode main control

Introduction: nrf52840 verification board

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Minimum ESP32 version

Introduction: ESP32+ATmage32U4

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Lossless HIFI sound quality MP3 with Bluetooth

Introduction: This project is AC6905A lossless HIFI sound quality MP3 with Bluetooth.

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Bluetooth 4.2 module E104-BT02 board

Introduction: This is a Bluetooth 4.2 board designed based on EBYTE's E104-BT02 module.

Schematic PCB

line-watch

Introduction: LineWatch is a programmable watch that focuses on wifi and Bluetooth connections and integrates many sensors. Build a watch software system based on micropython language. Currently, main functions such as clock, alarm clock, compass, weather, applications and settings have been implemented.

Schematic PCB

led_mother

Introduction: LED motherboard repair

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75 keyboard

Introduction: 75 keyboard

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[Hangshun Training Camp] Based on HK32 Bluetooth dual-mode keyboard +461097A

Introduction: Based on HK32 Bluetooth dual-mode keyboard GH60 array

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CH579M Dual-mode USB Bluetooth keyboard with RGB

Introduction: CH579 is an ARM core 32-bit microcontroller integrating BLE wireless communication. On-chip integrated low-power Bluetooth BLE communication module, Ethernet controller and transceiver, full-speed USB host and device controller and transceiver

Schematic PCB

Chigo air conditioner fan network version

Introduction: A Chigo air-conditioning fan is modified based on the AT32F421 microcontroller and the Tuya wifi module. The Tuya app is used for LAN and remote control, and the development method uses the SDK.

Schematic PCB

JasonFly

Introduction: nrf52840 keyboard

Schematic PCB