In the field of IoT and wireless communication development, an excellent test kit can greatly reduce development barriers and accelerate product verification cycles. Chengdu EBYTE Electronic Technology Co., Ltd. has launched a complete and well-structured E28-2.4G series test kit for its popular 2.4GHz wireless modules, providing developers with a full toolchain from basic function verification to in-depth secondary development. This article will systematically sort out this series of kits to help you make precise selections.

Overview of E28 Series Test Kit

The E28 series  test kit is clearly divided into three series based on the type of core module it carries, functional positioning, and development complexity: SC Evaluation Kit Series, TB Development Test Board Series, and Entry-Level Development Board Series.

Series 1: SC Evaluation Kit Series (Secondary Development Platform)

This series is positioned as a fully functional secondary development evaluation platform, with a general-purpose MCU (usually STM32F103) onboard and all pins of the MCU and wireless module led out. Users can not only test wireless functions but also conduct embedded software development and prototype verification based on this platform.

Unified Advantages of the SC Series

• Complete Development Platform: Integrates MCU, USB-to-serial port, buttons, LEDs, and pin headers, providing sample source code (such as STM32 projects based on HAL library) for direct programming and debugging.

• Fully Open Interfaces: All GPIO and communication interfaces (SPI/UART/I2C) are led out, enabling flexible connection of peripherals.

• Core Value: Not just a testing tool, but also a product prototype. Suitable for engineers who need to start from underlying drivers and develop custom protocol stacks or applications.

Series 2: TB Development Test Board Series (Plug-and-Play Transparent Transmission Test)

This series is positioned as a plug-and-play tool dedicated to wireless transparent transmission function testing. The onboard module is a UART TTL serial port transparent transmission module. Users can directly conduct wireless data transmission and reception tests by connecting to a computer via USB without programming.

Unified Advantages of the TB Series

• Zero-Code Testing: Connect to a computer via Type-C USB, and a serial port will appear. Use serial port tools such as XCOM to send AT commands for parameter configuration or directly send data for transparent transmission.

• Intuitive Functions: Onboard power, transmit/receive status indicators, and reset button, making the working status clear at a glance.

• Core Value: Quickly verify the communication performance (distance, stability, rate) of wireless modules. Before selecting a wireless module model and conducting hardware design, it is essential to conduct actual environment tests using this series of kits.

Series 3: Entry-Level Development Board (Basic Pin-Out Board)

Products such as E28-2G4TBH-01 mentioned in documents sometimes refer to a simpler "development board" whose functions are between SC and TB. It usually only leads out the pins of the wireless module via pin headers, integrates USB-to-TTL and basic power supply, but does not include an additional MCU. It is more suitable for users to connect and drive the module using their own main control (such as Arduino, STM32 minimum system) for preliminary integration experiments.

How to Choose the Right Test Kit for You?

Follow the following decision-making process to quickly locate the required product:

1. Clarify Your Goal

• Only test wireless performance (distance, rate, anti-interference) → Choose the TB Series Development Test Board.

• Develop a complete product and write embedded software → Choose the SC Series Evaluation Kit.

2. Determine the Wireless Solution

• Need maximum flexibility and custom protocols → Choose the SC Series (equipped with M Series SPI modules).

• Pursue rapid implementation and use AT commands and transparent transmission → Choose the TB Series (equipped with T Series UART modules).

3. Select the Power Level

• Short-distance, low-power consumption → Choose 12dBm models (MBL-SC, TBL-01).

• Medium-distance, general scenarios → Choose 20dBm models (MBM-SC, TBM-01).

• Long-distance, complex environments → Choose 27dBm models (MBH-SC, TBH-01).

For new projects with uncertain final solutions, it is recommended to purchase a pair of TB Series test boards (such as two TBM-01) for actual wireless link testing; at the same time, purchase an SC Series evaluation kit (such as MBM-SC) for software prototype development. The combination of the two achieves the highest efficiency.

Introduction to EBYTE's Product Line

Chengdu EBYTE Electronic Technology Co., Ltd. is a national high-tech enterprise that provides complete products and solutions covering all levels of the IoT:

Wireless Communication Modules 

• LPWAN: LoRa/LoRaWAN, NB-IoT, 4G/Cat.1 modules.

• Short-Range Wireless: 2.4GHz (LoRa/FLRC/GFSK), Wi-Fi, Bluetooth (BLE/audio), Zigbee, SparkLink.

• Specialized Wireless: Data transmission radios, Mesh ad-hoc networks, millimeter-wave radar modules.

Network and Gateway Devices

• LoRaWAN gateways, industrial IoT gateways, DTUs, serial port servers, protocol conversion gateways.

Embedded Computing Platforms

• Industrial core boards (SoM) and single-board computers (SBC): Based on processors such as NXP i.MX, Allwinner, and Rockchip.

Sensors and Transmitters

• Temperature and humidity transmitters, analog quantity acquisition modules, IO control modules, etc.

EBYTE products are known for their "industrial-grade, high-reliability, full-series" features, have passed global certifications, and cover more than 50 countries and regions, committed to making IoT connections simpler and more reliable.