When it comes to lively scenes like square dancing, outdoor karaoke, and band performances, you must have seen the eye-catching “soaiy” logo. As a national brand focused on outdoor speakers for 15 years, Soaiy has provided countless people with joyful moments through its powerful sound and durable features. Today, let’s take a look at Soaiy’s … Read more
The module is certified Is separate certification required for the complete product? Current product: Smart Bluetooth Door Lock Event Background The client manufactures electronic door locks, and the Bluetooth module inside is purchased from a supplier that has already certified the Bluetooth module with an FCC-ID certificate. Now, the client wants to export the complete … Read more
▼ Click the card below to follow me ▲ Click the card above to follow me PyBluez: Unlocking the Magic of Bluetooth Communication In today’s world where smart devices are everywhere, Bluetooth communication has become the secret weapon for connecting different devices. As a Python developer, if you want to master wireless communication between devices, … Read more
The wireless mouse has completely freed us from the constraints of wires, providing a more liberated control experience for both office work and gaming. Today, I present to you a guide for selecting Bluetooth mice that are guaranteed to be a hit, with rave reviews from users! 【Logitech M330 Silent Mouse】An essential tool for office … Read more
When it comes to Beyerdynamic, audio enthusiasts are likely familiar with this brand. Originating from Germany, this professional audio brand has been deeply involved in the headphone industry for nearly a century. Today, we will introduce nine representative headphone products currently available from Beyerdynamic, ranging from sports Bluetooth to professional monitoring, from HiFi in-ear to … Read more
Recently, I have been researching the Bluetooth protocol stack and came across an interesting fact. We know that Apple’s AirPods have ushered in a new era of true wireless Bluetooth headphones (TWS), currently dominating a large share of the market. Many domestic manufacturers have followed suit, but due to Apple’s registered patents, they find themselves … Read more
This article is about classic Q&A on ADC/DAC design, covering common issues such as clock duty cycle, common mode voltage, gain error, differential phase error, intermodulation distortion, and more. 1. What is Small Signal Bandwidth (SSBW)?Small Signal Bandwidth (SSBW) refers to the frequency at which the output amplitude drops to a specified value compared to … Read more
Any practical electronic application will be affected by multiple sources of error, which can cause even the most precise components to deviate from their specified behavior in the datasheet. When the application signal chain lacks built-in mechanisms to self-correct these errors, the only way to minimize their impact is to measure the errors and systematically … Read more
In the field of digital signal processing, the Nyquist sampling theorem establishes the fundamental criterion for signal digitization— to accurately reconstruct a continuous signal, the sampling frequency must be at least twice the highest frequency of the signal.However, engineers have observed an interesting phenomenon: in practical applications, we often generate signals exceeding 500MHz using a … Read more
1. IntroductionLet’s take a look at a diagramFriends who have read the previous blog post “The Execution Process of CPU Instructions” should have noticed that there is an indispensable component in the execution process of instructions in a computer, which is the bus. The diagram above shows multiple buses, and today we will introduce in … Read more