How the Bluetooth module works
How the Bluetooth module works
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 4.0 is classic Bluetooth. Starting…
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 the traditional Bluetooth, so although…
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, Bluetooth mice, and Bluetooth keyboards.…
What is the difference between a Bluetooth adapter and a WiFi adapter?
Bluetooth 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 interference of wireless signals…
Bluetooth HID Protocol Notes
1. Overview The Human Interface Device (HID) defines the protocols, features and usage procedures of Bluetooth in human interface devices. Typical applications include Bluetooth mouse, Bluetooth keyboard, Bluetooth gamepad, etc.…
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 (Universal Asynchronous Receiver/Transmitter) is a…
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 need to deploy positioning base…
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 level positioning to high-precision centimeter…
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 them should be smaller.(2) Low…