Month: January 2025

This project uses a Raspberry Pi with ultra-low-cost software-defined radio (SDR) hardware to receive tracking information sent by airborne S-mode transponders from millions of miles away. The Raspberry Pi is equipped with a sleek 3.5-inch TFT display to provide a convenient overview of aircraft activity.

Hardware

The RTL2832U-based tiny SDR receiver (124-5461) was originally designed for DVB-T reception and first brought to market. However, due to the efforts of Linux kernel hackers over

CHH ID: feijianfei

1. Background This year, as everyone knows, has been quite challenging. Friends from the forum may remember that I have been in the U.S. for many years. This year, amidst the pandemic and the tumultuous relations between the two countries, I consider myself very lucky to still be here. Just before the travel ban took effect, I landed in the U.S., and by March, I was recruited by a big boss. Sometimes, I lie in bed and think

The mini PC brand "Zero刻" has launched its flagship model, the GTR series, which has welcomed the new generation, the Zero刻 GTR6. Compared to the previous generation GTR5, the performance and many other aspects of the Zero刻 GTR6 have seen significant improvements. For example, in terms of graphics cards, the previous generation GTR5 could only achieve decent FPS at low or medium quality when playing

The third season video course on ARM64 architecture and programming: Basics of cache knowledge (1)

Why should system software engineers deeply understand cache?

Cache is ubiquitous in a system, and as a systems programmer, you cannot escape it. The diagram below is a classic architecture diagram of an ARM64 system, consisting of Cortex-A72 and Cortex-A53 forming a big.LITTLE architecture, where each CPU core has its own L1 cache, and each cluster shares an L2 cache, along with a Mali GPU and DMA

Software Introduction:

1. Before installation, first install the

The "Zero刻" brand of mini computer hosts has previously launched the "Zero刻 GTR7" equipped with the Ryzen 7840HS, applying a technology called "MSP" that increased the default 54W TDP to 65W. This technology has now been implemented in other Zero刻 models, such as the Zero刻 SER5 MAX, which is equipped with the Ryzen 5800H and has increased its 45W TDP to 54W, enhancing its performance.

However, the Zero刻 SER5