BadUSB

Say Goodbye to Complex Networking Solutions: Qingke RISC-V MCU and USB/Bluetooth/Ethernet Interface Chips

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Qinheng, based on its self-developed Qingke RISC-V microprocessor and professional connection technologies like USB, Bluetooth, and Ethernet, has created a product matrix that combines a full-stack MCU with multi-dimensional and multi-layered interface chips without kernel and PHY technology licensing fees and commissions. In addition to a rich lineup of USB interface chips, the Ethernet product … Read more

Introduction to CEPARK USB Development Board Main Control Chip

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Introduction to CEPARK USB Development Board Main Control Chip

1) STC89C52 The STC89C52 microcontroller is a model from the STC89 series of microcontrollers. The STC89 series microcontrollers are a new generation of high-speed/low-power/highly anti-interference microcontrollers launched by Holtek Technology. The instruction code is fully compatible with traditional 8051 microcontrollers, and 12 clock/machine cycles and 6 clock/machine cycles can be selected arbitrarily. The HD version … Read more

Communication Method for RS232 to USB Interface

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Communication Method for RS232 to USB Interface

1. Introduction USB, as a new interconnection protocol for PCs, makes the connection between peripherals and computers more efficient and convenient. This interface is suitable for various devices, not only featuring fast speed, plug-and-play, and support for hot-swapping, but also allowing up to 127 devices to connect simultaneously, solving issues such as resource conflicts, interrupt … Read more

Understanding Cable Transmission Distances for Communication

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Understanding Cable Transmission Distances for Communication

Search WeChat Technical Training 01 Network Cable Let’s briefly discuss network cables. Most people are familiar with network cables, and different specifications of cables have different transmission distances. Network cables transmit network signals, and if the distance exceeds the cable’s capacity, the signal will degrade, leading to potential network interruptions. Category 5 and Category 6 … Read more

Understanding Communication Protocols: UART, TTL, RS232, RS422, RS485, CAN, USB

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Understanding Communication Protocols: UART, TTL, RS232, RS422, RS485, CAN, USB

Follow “Technical Training” focused on automation education for 14 years UART, I2C, RS485… These communication methods are widely used, but their explanations can be ambiguous. Therefore, I feel it is necessary to organize them for clarification and differentiation. The article is a bit long, so I suggest saving it for later reference when needed. UART … Read more

Solving USB to TTL Board Programming and Serial Debugging Issues for STC

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Solving USB to TTL Board Programming and Serial Debugging Issues for STC

Problem: I used a USB to TTL board to program the STC89C52RC microcontroller. I connected the board’s RX to the microcontroller’s TX (P3.1), the board’s TX to the microcontroller’s RX (P3.0), and GND to GND. After making the connections, I couldn’t download the program, and I kept receiving the prompt “Please power on the MCU.” … Read more

Linux System: Download and Installation Guide

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Linux System: Download and Installation Guide

Click the blue text to follow us Linux System – Download and Installation Tutorial Linux is an open-source operating system that is widely used across different platforms. Below are the general steps for downloading and installing the Linux system. Select a distribution: Before downloading Linux, you need to choose a distribution that suits your needs. … Read more

How to Download Screens on Weilan Touch Screen via USB

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How to Download Screens on Weilan Touch Screen via USB

Search WeChat Technical Training The Weilan touch screen supports downloading screens via serial port, network port, and USB. The method for downloading via the network port has been shared earlier, and the network port is the most commonly used. In case of emergencies where the network or serial port cannot be used, the USB function … Read more

LXI (3): A Review and Outlook on LXI Instrument Bus Technology

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LXI (3): A Review and Outlook on LXI Instrument Bus Technology

In the field of testing and measurement, the development of instrument bus technology has always been a major concern for engineers and scientists. From the GPIB bus introduced in the 1960s specifically for instrument control, to the widely used USB, VXI, PXI, and the latest LXI and PXI Express, the emergence of new bus technologies … Read more

USB to Serial Communication Circuit

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USB to Serial Communication Circuit

With the development of technology, RS232 serial communication is still widely used in industry. However, in commercial applications, the USB to UART technology has gradually replaced RS232 serial ports. Most laptops no longer have serial ports. So, how can we achieve communication between a microcontroller and a computer? We only need to add a USB … Read more