CameraSwitch

简介：A switch that works on Nvidia Jetson Nano.

Schematic PCB

USB HUB

Introduction: USB2.0 one-to-four hub, the speed is no different from other USB2.0 hubs. It uses typeC power supply and has 2A6V self-recovery insurance. It all uses sinker interfaces. It is strong and durable, and is very thin and light. It can be basically put in a computer bag. Doesn’t add much thickness to the

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Smart car dual-circuit motor drive board

Introduction: Smart car dual-circuit motor drive board, the drive power supply and logic power supply are powered separately, and can pass large current

Schematic PCB

STM32F103C8/C6T6 minimum system board

Introduction: Introduction: Complete functions, cool appearance, beautiful appearance, the best choice! STM32F103CX series smallest system board

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Classic SL2.1A four-way docking station/hub

Introduction: Using the classic USB2.0 chip SL2.1A, it is the first choice for DIY, with simple circuit and easy production. The first version has been tested and used for a year and everything works fine.

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Single small motor driver

Introduction: A single-channel small motor driver based on SDC9150 can carry 2A current

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nbu_recruit new cards

Introduction: Recruitment card for Ningbo University

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HT32F52352 development board

Introduction: HT32F52352 development board

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CH32F103C8T6-CMSIS-DAP

Introduction: Use CH32F103C8T6 to make your own CMSIS-DAP.

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U disk storage rack

Introduction: Can store U disk, TF card

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Touch screen T12

Introduction: Touch screen T12

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mini heating table-V3

Introduction: 35X35, cost 10 yuan

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TL431 closed loop control NE555 speed regulation circuit diagram

Introduction: NE555 speed regulation circuit diagram of TL431 closed-loop reverse control

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NFC electronic business card/bus card/small advertisement

Introduction: NFC electronic business cards/bus cards/small advertisements are based on open source projects https://oshwhub.com/ljylovewyn/xi-an-di-tie-NFCming-pian

Schematic PCB

2021 Question A-Signal distortion measurement device

Introduction: This work designs and implements a distortion measurement device for periodic signals with a signal processing circuit that amplifies distorted small signals as the core. The work can display the signal period, THD measurement value and normalized amplitude in real time on the serial screen, and can be displayed simultaneously on the mobile terminal through the ESP32-WIFI module.

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2021 Question I-Energy storage car with power generation function 2223

Introduction: The first work of the 21st National Electric Competition, an energy storage car with power generation function

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[Internet of Things] Hongmeng IoT Smart WIFI Switch + 1365806A

Introduction: Use Hongmeng Hi3861 chip combined with servo to realize WIFI remote control of physical switches in home or dormitory

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Micro USB magic modification Type-C

Introduction: Based on the obsession with USB Type-C, a Micro USB to Type-C small adapter board is designed.

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TMK USB to USB converter

Introduction: You need USB host controller chip MAX3421e and AVR chip ATMega32U4. TMK firmware flashing and use

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ESP32 projection

Introduction: A small projection made using ESP32+ST7789

Schematic PCB