What is the upgrade of Bluetooth 4.0/4.1/4.2/5.0/5.1/5.2？
1. Brief introductionAfter years of development, Bluetooth has been gradually upgraded from the initial version 1.0 to version 5.3. Among them, the version before version …
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Does Bluetooth 5.0 support lossless audio?
Yes. Bluetooth 5.0 does not greatly improve the sound quality of audio transmission. The Bluetooth A2DP protocol commonly used in listening to songs belongs to …
How many devices can Bluetooth connect at the same time?
Seven, Bluetooth can connect up to 7 devices at the same time. However, the types of connected devices should be different, such as Bluetooth headsets, …
What is the difference between a Bluetooth adapter and a WiFi adapter?
1. At present, the distance of the civil version of Bluetooth is between 8-30m, which is an ideal state. In reality, there will be much …
Bluetooth HID Protocol Notes
1. Overview 2. Some concepts(1) HID Reports: Bluetooth HID devices support three kinds of Reports: Input, Output, and Feature.(2) HID establishes two channels, Control Channel …
Explain UART, SPI and I2C in detail
UART, SPI, and I2C are common communication protocols used in embedded systems and IoT devices to transfer data between integrated circuits, microcontrollers, and sensors. UART …
Comparison of indoor positioning schemes: UWB, Bluetooth, RFID, WiFi
Indoor positioning technology is constantly developing, and the means are also rich and diverse. WiFi, Bluetooth, RFID and UWB are popular. These kinds of technologies …
Bluetooth Beacon makes indoor positioning easier
The IoT technology has been constantly updated and iterated, and the indoor positioning technology has also undergone earth shaking changes. From room level positioning, decimeter …
Eight features of Bluetooth Technology
(1) Bluetooth module is small and easy to integrate: due to the small volume of personal mobile devices, the volume of Bluetooth chips embedded in …
What’s IoT?
Internet of things (IoT) refers to the real-time collection of any object or process that needs monitoring, connection and interaction through various devices and technologies …