RA-08H LoRaWAN Node Board Datasheet

1 Overview

1.1 Product Description

The RA-08H Node Board is a high-performance IoT hardware platform based on the RP2040 dual-core ARM Cortex-M0+ microcontroller. It integrates the RA-08H module, supporting the 803-930MHz frequency band and the LoRaWAN protocol, with a transmit power of +22dBm and an ultra-high receive sensitivity of -138dBm@125kHz SF12. The hardware design includes 4MB Flash storage, 264KB SRAM, six 5V Crowtail interfaces (supporting analog/digital/UART/I2C), and a 20-pin GPIO expansion. It supports solar charging and lithium battery power supply, with an operational amplifier enabling high-precision analog signal acquisition, forming a complete chain from sensor data collection to LoRa wireless transmission.

The device features dual modes: LoRa point-to-point transparent transmission and LoRaWAN network compatibility. It supports Arduino/MicroPython development environments and can be quickly integrated with 150+ Crowtail ecosystem sensor modules. In its system architecture, the RP2040 microcontroller coordinates sensor data acquisition and communicates with the RA-08H module via LPUART for remote transmission, while status LEDs facilitate system monitoring. It is suitable for applications such as soil moisture monitoring in smart agriculture, distributed sensor networks in industrial environments, and urban weather stations—particularly in outdoor IoT monitoring systems requiring low-power, wide-area transmission with multi-node, long-distance deployment.

1.2 Key Features

• Powerful MCU Performance: Equipped with the RP2040 microcontroller, featuring dual 32-bit ARM Cortex-M0+ cores, delivering robust processing power for device operations.
• Wide Frequency Band Support: Integrated RA-08H module supports the 803MHz–930MHz range, covering EU868 and US915 bands.
• Rich Interface Resources: Offers extensive external interfaces, compatible with 150+ Crowtail series modules for high expandability.
• Flexible Transmission Modes: Supports both LoRa point-to-point transparent transmission and LoRaWAN network connectivity, meeting diverse communication needs.
• Multi-System Compatibility: Works seamlessly with Arduino & MicroPython, enabling easy development across different projects.

1.3 Functions & Application Scenarios

The RA-08H node board can build a multi-functional environmental monitoring system through seamless integration with Crowtail ecosystem sensors. It supports connection to DHT20 temperature and humidity sensors for climate data collection, can be paired with GPS modules for precise positioning, and integrates Air Quality Sensor 2.0 and Ultraviolet Sensor 2.0 to form a comprehensive environmental parameter monitoring network.

Leveraging the long-distance and low-power characteristics of LoRa technology, the system is particularly suitable for distributed deployment scenarios, such as field environment monitoring in smart agriculture (integrated analysis of temperature, humidity, ultraviolet rays, and air quality), wild ecological research (mobile monitoring stations with GPS positioning), and toxic gas diffusion tracking in industrial plants. All sensor data can be uploaded to the cloud via LoRa point-to-point transmission or LoRaWAN network, enabling wide-area real-time environmental monitoring and early warning.

Figure 1 illustrates a functional application diagram where the RA-08H Node Board is shown connected to various Crowtail sensors, including a DHT20 temperature and humidity sensor, a GPS module, an Air Quality Sensor 2.0, and a UV Sensor 2.0, demonstrating its capability for comprehensive environmental monitoring.

2 Network Topology Diagram

Figure 2 depicts the network topology diagram for a LoRaWAN system. It shows a router connected to a LoRaWAN Gateway (which can be single-channel or 8-channel). The gateway communicates with multiple RA-08H LoRa nodes. The diagram also illustrates a cloud server and The Things Network (TTN) for data aggregation and management. The LoRa nodes are shown connected to various sensors such as Temperature Humidity Sensor, Capacitive Soil Moisture Sensor, PH Sensor, Light Sensor, DHT20, Water Sensor, Air Quality Sensor, and UV Sensor.

3 Product Appearance Diagrams

Figures 3, 4, and 5 provide different views of the RA-08H Node Board. Figure 3 shows the front view, highlighting the RA-08H module, RP2040 microcontroller, and various connectors. Figure 4 presents a side view, and Figure 5 displays the back view, showing additional pins and connectors.

4 Dimension Diagram

Figure 6 shows the dimension diagram of the RA-08H Node Board, indicating its size as 50mm in length and 35mm in width. It also labels key connectors and pins.

5 System Block Diagram

Figure 7 presents the system block diagram of the RA-08H Node Board. It illustrates the power input paths (TYPE-C 5V, SOLAR) feeding into a Power Selection module, which then supplies power to the RP2040 microcontroller and other components via LDO and voltage regulators (RY3420, SX1308). The RP2040 is shown connected to the RA-08H module via UART and also interfaces with 2*10 GPIOs, Crowtail interfaces (D0, D1, I2C, A0, A1, UART), and reset/boot pins.

6 Hardware Overview

The hardware overview discusses the pin definitions and function descriptions of the RA-08H node board, covering the corresponding relationships and specific descriptions of pins for buttons/indicators and various interfaces.

Figure 8 is a schematic diagram of the RA-08H Node Board interfaces, labeling key components and connectors such as RA-08H BOOT, RP2040 BOOT, SOLAR, TYPE-C, BAT, RST, and various interface ports like D1, D0, I2C, A1, A0, UART, and the 10s breakout.

6.1 Pin Definitions and Functions of Buttons/Indicators

6.2 Pin Definitions and Functions of Interfaces

7 Technical Specifications

8 Environmental Characteristics

8.1 Extreme Operating Conditions

8.2 Normal Working Conditions

9 Related Documents

• RA-08H Node Board Product Link
• RA-08H Module Datasheet

10 Revision History