Article List

• How to Choose a Suitable 2.4Ghz Wireless Module?

  ​The 2.4G wireless module works in the worldwide application-free ISM band. This band has relatively little interference, high frequency but weak penetration ability. These 2.4G RF Modules have a transmission distance of several dozen meters in an open air, which are widely used in smart home, consumer electronics, etc.

  FAQ March 06, 2021
• How Bluetooth Module Works? M-B14001 BLE Module Introduction

  How Bluetooth Module Works? Generally speaking, BLE module has four working modes: Master mode, Slave mode, Broadcast mode, and Mesh networking mode. Taking the Bluetooth module M-B14001 as an example. This module is a master-slave integrated Bluetooth Module, with UART interface for data transmission.

  FAQ November 06, 2020
• Why Shall We Choose LoRa Module Even It Is More Expensive?

  Why shall we choose LoRa Module even it is more expensive? According to its performance of transmission distance, power consumption, sensitivity, and anti-jamming ability, LoRa module is a good choice, epecially for small data transmission, even it is more expensive than the ordinary wireless modules!

  FAQ January 15, 2021
• F.A.Q. for Wireless Bluetooth Modules

  What is the difference between low power Bluetooth and normal Bluetooth? What is the transmission rate of BLE Bluetooth Module? What is the transmission rate of the BLE module? How much data can be transferred? Does the BLE module support 2.4G non-Bluetooth protocol mode?

  FAQ February 19, 2021
• What is the difference between SPI and UART communication?

  Both SPI and UART are chip units that process and transmit data. However, SPI (Serial Peripheral Interface) is usually a 3 - 4 wire interface, which can send and receive independently and can be synchronized, while UART (Universal Asynchronous Receiver Transmitter) has only one input port and one output port, which completes two-way communication at the standard baud rate.

  FAQ January 15, 2021
• How to Choose a Proper Wireless Module?

  How to choose a proper wireless module? There are 5 steps to be taken when we selecting a wireless module from the Wireless Module Supplier! The specific steps include the following five aspects, which are specifically introduced by DreamLNK for your analysis.

  FAQ December 18, 2020
• What is "Narrow Band Internet of Things" (NB-IoT)?

  NB-IoT is an emerging technology in the field of IoT that supports cellular data connection of low-power devices over a wide area network (WAN), also known as a Low-power Wide Area Network (LPWAN). NB-IoT supports efficient connections to devices with long standby times and high network connectivity requirements.

  FAQ November 17, 2020
• What is Standing Wave Ratio (SWR) in Radio Communication?

  The Standing Wave Ratio (SWR), also known as VSWR, which is short for Voltage Standing Wave Ratio. The SWR (VSWR) is a numeric value used to indicate whether the antenna and the RF transmitter matches well. The SWR is the basis for checking the efficiency of feeder transmission.

  FAQ December 11, 2020
• Communication Principle of LoRa FHSS (Frequency-Hopping Spread Spectrum)

  LoRa FHSS (Frequency-Hopping SpreadSpectrum) technology is used when a single packet time may exceed the maximum channel dwell time allowed by relevant regulations. Turn on hopping mode in LoRa by operating RegHopPeriod and FreqHoppingPeriod registers with non-zero values.

  FAQ October 14, 2020
• System on a chip (SoC) module

  An RF transceiver module incorporates both a transmitter and receiver. The circuit is typically designed for half-duplex operation, although full-duplex modules are available, typically at a higher cost due to the added complexity.

  FAQ July 04, 2020