This article is reprinted from the public account: Will’s Canteen Author: A Chef Who Codes A spectrum analyzer is a commonly used test and measurement instrument in the research, testing, and maintenance of wireless communication systems. It can perform frequency domain measurements, time domain measurements, and even vector signal analysis. If you are engaged in … Read more
Comparison of FFT Performance in Mainstream Oscilloscopes FFT, as a simple frequency spectrum testing tool, has become a standard feature in oscilloscopes. EEVBlog conducted a comparison of the FFT capabilities of mainstream oscilloscopes, selecting several common models to show their performance. Of course, the evaluation method is somewhat subjective, primarily relying on visual observation. We … Read more
Overview of Bluetooth Low Energy Testing Requirements Bluetooth Low Energy (BLE) devices use a total of 40 channels, including 3 advertising channels (37, 38, 39) and 37 data packet transmission channels (1 to 36). The Link Layer data packet consists of four parts, as shown in the figure below: After the design of the Bluetooth … Read more
MAKER: emdee401／Translated by: Fun Endless Adding dynamic LED effects to music can enhance the immersive experience of listening to music. Here, I will create a super-sized 14-frequency audio spectrum analyzer using Arduino and the Si5351 clock signal generator. The LED strip (containing 280 LEDs) and acrylic board are the main components, with Arduino serving as … Read more