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