1. System Objectives and Definitions Objective: To achieve centerless interconnection and bidirectional wireless communication among multiple individual terminals without relying on external public base stations (4G/5G) or a central node. Method: Utilize antennas + RF modules (AD936X) + baseband modules (FPGA modulation) to establish a physical layer communication link, completing basic packet transmission and status … Read more
Interpretation of Bluetooth Core Protocol v6.11. Bluetooth FrameworkThe Bluetooth protocol stack consists of the host, HCI to the controller, and finally to the RF transmitter.The following diagram shows the complete structure of the Bluetooth controller, which has been basically formed since Bluetooth 4.0:The controller is further divided into BR/EDR, AMP, and LE. Among them, AMP … Read more
Development Environment Introduction:Main Control: ESP32S3N16R8 ModuleEnvironment: Developed under ESP-IDF V5.3 FrameworkRF Module: 2.4G RF Module, Model E01C-ML01DP5Communication Interface: SPIRF Module Introduction:This time, we are using the 2.4G RF module based on Si24R1 from the brand Yibait.Si24R1 is pin-compatible with nRF24L01 and is a commonly used domestic alternative to nRF24L01. The driving method is also basically … Read more
Click the blue text above ยท Follow us A wireless module (RF module) refers to a module product that achieves data transmission through radio technology. The module integrates high-frequency components and has conventional interfaces (such as serial ports, SPI, digital signals, etc.), allowing users to develop wireless products without needing to master high-frequency knowledge or … Read more
Selected from TI Wireless Connectivity Forum, original post link at the bottom “Read Original” 0 Introduction In recent years, wireless sensor network technology has developed rapidly. Due to the free and open characteristics of the 2.4 GHz communication band, various communication protocols based on this band, such as Wi-Fi and Bluetooth, have matured and been … Read more
For the design of the FM transmitter, I chose the VMR6512 module, which really resembles a complete radio frequency (RF) module on a chip! It eliminates all the essential circuits of a basic FM transmitter, such as inductors and trimmers. According to the specifications of the VMR6512: “The VMR6512 is a highly integrated FM audio … Read more