In numerous fields such as the Internet of Things (IoT), vehicle navigation, precision agriculture, drones, and asset tracking, Global Navigation Satellite System (GNSS) modules are core components for achieving high-precision positioning, navigation, and timing. Faced with a market full of GNSS modules with varying functions and performance, selecting the most suitable model based on project requirements is a key challenge for engineers. This article will take Chengdu EBYTE's extensive product line as an example to systematically outline the core dimensions of GNSS module selection and provide a clear selection path.

In IoT, smart wearables, industrial control, and other fields, Bluetooth (especially BLE) has become the mainstream technology for short-range wireless communication. Faced with a wide range of Bluetooth modules on the market, selecting the most suitable model based on project requirements is a critical decision for engineers in the early product development stage.

In the design of IoT, asset tracking, and portable navigation devices, the selection of Global Navigation Satellite System (GNSS) modules is critical. Among performance metrics, cold start time (the duration from full power-off/first power-on to successful positioning) is a key indicator directly affecting user experience and device response speed. For systems using FPGA as the main controller, interface compatibility, power consumption, and integration of the GNSS module are also essential considerations.

In IoT and embedded wireless communication projects, developers often need a powerful, interface-rich wireless core module that supports in-depth secondary development.

Detection devices typically require stable data transmission. We recommend a "Wi-Fi + LoRa" dual-mode backup or scenario-specific scheme to ensure communication reliability in complex environments, based on your needs for transmission distance and data rate.

This article provides a practical alternative solution for building a ZigBee network with over 200 nodes, focusing on module selection, network architecture design, and scalability. It analyzes the limitations of low-end modules (e.g., E18 series, max 32 nodes) and recommends a hybrid architecture using high-performance components: Link72 (E72-2G4M20S1E) as the core coordinator (supports up to 200 devices), E180 series as backbone routers (extending coverage and capacity), and E18/E180 series as end nodes (low-power/battery-powered sensors). The guide also clarifies key product roles and deployment strategies to ensure stable, reliable large-scale network operation.

The Serial Peripheral Interface (SPI) is a synchronous, full-duplex serial communication protocol designed for short-distance data exchange between microcontrollers (MCUs) and peripheral devices such as sensors, displays, and memory chips.

The Serial Communications Interface (SCI) is a hardware or protocol that transmits data bit-by-bit sequentially over a single data line. Unlike parallel communication, which uses multiple lines for simultaneous bit transmission, SCI breaks data into individual bits and sends them in a timed sequence over one channel.

This guide provides a detailed comparison of Sub-1GHz (433MHz/470MHz/868MHz/915MHz) and ZigBee (2.4GHz) wireless modules, focusing on their technical characteristics, application scenarios, and product options from EBYTE. It analyzes core parameters (frequency band, communication protocol, transmission distance, data rate, power consumption, anti-interference, network topology) and offers recommendations for typical use cases (e.g., remote meter reading, smart agriculture, smart home, industrial sensor networks). The conclusion summarizes scenarios where Sub-1GHz (long-distance, low-power, complex environments) or ZigBee (mature Mesh, high node density, short-range) is preferred, and notes their complementary use in heterogeneous networks.

In industrial IoT, smart metering, and remote monitoring, the 433MHz and 915MHz ISM bands have become preferred choices for wireless communication due to their global license-free status and excellent propagation characteristics.

Selecting a Bluetooth module that balances performance and affordability is critical for IoT developers, hobbyists, and small-to-medium enterprises (SMEs). With the global market flooded with options—from premium international brands to budget-friendly local suppliers—this guide demystifies cost-saving strategies and highlights high-value brands, ensuring you avoid overspending without compromising on core functionality.

As a core domestic supplier of IoT wireless communication modules, EBYTE (Yibyte) focuses on cost-effective solutions for mid-to-low-end markets, emphasizing "multi-protocol coverage + scenario-specific solutions."

The Texas Instruments CC2530 is a widely used ZigBee SoC, powering many EBYTE E18 series modules (e.g., E18-MS1-PCB, E18-2G4Z27SI).

ZigBee​ is a low-power, low-data-rate wireless protocol widely used in smart home automation, industrial IoT, and sensor networks. Its flexibility in network topology—star, tree, and mesh—allows for optimized communication based on application requirements.

Selecting the appropriate UART-based RF module requires careful consideration of baud rate compatibility, transmission distance, power consumption, and environmental factors.