1. Ievads un beigasview
The DX-NR02 is a low-cost 2.4GHz wireless module designed as a pin-to-pin replacement for the original nRF24L01 chip. Utilizing the Si24R1 chip, it offers ultra-low power consumption and a robust wireless solution suitable for a wide range of applications. This module is fully compatible with nRF24L01 +/nRF2401A series, maintaining identical SPI timing, registers, and status.
Galvenās funkcijas:
- Mikroshēma: Si24R1 chip, high-performance wireless solution.
- Enerģijas patēriņš: Ultra-low power consumption with 1µA sleep current.
- Izstrādes atbalsts: Complete development package with full technical support.
- Kanāli: 126-channel support (2.4-2.525GHz) for multi-point communications and frequency hopping.
- Stabilitāte: Industrial-grade 16MHz crystal ensures stable operation across a wide temperature range (-40°C to +85°C).
- Frekvenču josla: Global ISM 2.4GHz band compliance.
- Diapazons: Up to 200m transmission distance in ideal conditions.
- Pārraides jauda: +7dBm+ maximum transmit power for reliable connections.
- Interfeiss: SPI interface (0-10Mbps) for easy MCU integration (requires external MCU for operation).
- Dizains: Compact 15×25×1.2mm design with PCB antenna.
Product Comparison (Si24R1 vs nRF24L01):
The DX-NR01/NR02 modules offer a cost-effective alternative to nRF24L01, providing similar functionality with enhanced stability and lower power consumption.
2. Specifikācijas
Vispārējie parametri:
| Parametrs | Sīkāka informācija |
|---|---|
| Mikroshēmas modelis | Si24R1 Chip |
| Module Size (SMA) | 12*19*0.8mm |
| Module Size (DIP) | 15*25*1.2mm |
| Darbības frekvenču josla | 2.4-2.525GHz, 126 channels |
| Kristāla frekvence | 16 MHz |
| Saziņas attālums | Ideal range 200m |
| Darbības sējtage | 2.0~3.6V (Classic Value 3.3V) |
| Darba temperatūra | -40~+85°C |
| Pārraides jauda | -12~+7dBm |
| Miega strāva | 1 µA |
| Aparatūras saskarne | SPI |
Piespraudes definīcijas:
The modules feature an 8-pin interface for connection to a microcontroller (MCU). Ensure correct pin assignments for proper operation.
NR02 Module Pinout:
| Pin numurs | Piespraudes nosaukums | Pin funkcija | Apraksts |
|---|---|---|---|
| 1 | GND | GND | Zemējums |
| 2 | VCC | Power Input Pin | 3.3V (Typical Value) |
| 3 | CE | Module enables control pins | – |
| 4 | CSN | Module chip selection pins | – |
| 5 | SCK | Moduļa SPI kopnes pulkstenis | – |
| 6 | MOSI | Moduļa SPI datu ievades tapa | – |
| 7 | Miso | Moduļa SPI datu izvades tapa | – |
| 8 | IRQ | Module interrupt signal pin | Zems līmenis derīgs |
NR01-SMD Module Pinout:
| Pin numurs | Piespraudes nosaukums | Pin funkcija | Apraksts |
|---|---|---|---|
| 1 | VCC | Power Input Pin | 3.3V (Typical Value) |
| 2 | CE | Module enables control pins | – |
| 3 | CSN | Module chip selection pins | – |
| 4 | SCK | Moduļa SPI kopnes pulkstenis | – |
| 5 | MOSI | Moduļa SPI datu ievades tapa | – |
| 6 | Miso | Moduļa SPI datu izvades tapa | – |
| 7 | IRQ | Module interrupt signal pin | Zems līmenis derīgs |
| 8 | GND | GND | Zemējums |
3. Iestatīšana un instalēšana
The DX-NR02 module is designed for easy integration into various projects. It requires an external microcontroller (MCU) for operation and communicates via the SPI interface.
Moduļa pievienošana:
- Barošanas avots: Connect the VCC pin to a 3.3V power source and GND to ground.
- SPI saskarne: Connect the CE, CSN, SCK, MOSI, and MISO pins to the corresponding SPI pins on your microcontroller. Refer to the pin definition tables above for exact pin functions.
- Antenas savienojums: For modules requiring an external antenna, ensure the antenna is properly connected before powering on the module to prevent open-circuit operation and potential damage. The DX-NR02 features a PCB antenna.
- Attīstības vide: Set up your preferred development environment (IDE) and ensure you have the necessary drivers and libraries for the Si24R1 chip.
Kristāla oscilators:
The DX-NR02 module utilizes an upgraded 16MHz SMD Crystal Oscillator, which offers improved stability and ease of manufacturing compared to legacy plug-in crystals.
- Uzstādīšanas metode: SMT automatic placement, eliminating the need for manual labor.
- Stabilitāte: ±10ppm to ±50ppm (up to ±1ppm), providing superior frequency performance.
- Environmental Adaptability: Operates reliably from -40°C to +85°C, with enhanced resistance to vibration and moisture.
For detailed wiring diagrams and code examples, please refer to the technical documentation available via the support links.
4. Lietošanas instrukcijas
The DX-NR02 module operates as a full-duplex 2.4G RF module, enabling wireless communication between devices. It functions by sending and receiving data packets over the 2.4GHz ISM band.
Pamatdarbība:
- Inicializācija: After connecting the module to your MCU, initialize the SPI communication and configure the module's registers according to the technical manual. This includes setting the operating frequency, data rate (250kbps, 1Mbps, or 2Mbps), and channel.
- Datu pārraide: To send data, load the data into the module's transmit buffer and issue a transmit command via SPI.
- Datu saņemšana: To receive data, configure the module in receive mode. When data is received, the IRQ pin will typically go low, signaling the MCU to read the data from the module's receive buffer via SPI.
- Enerģijas pārvaldība: Utilize the module's ultra-low sleep current (1µA) feature to conserve power in battery-operated applications by putting the module into sleep mode when not actively transmitting or receiving.
Komunikācijas diapazons:
The module can achieve a communication distance of up to 200 meters under ideal conditions. These conditions typically include an open area, a 2.0m antenna height, a transmit power of +7 dBm, and an air data rate of 250 Kbps.
5. Apkope
To ensure the longevity and optimal performance of your DX-NR02 wireless module, follow these maintenance guidelines:
- Vides apstākļi: Darbiniet moduli norādītajā temperatūras diapazonā no -40 °C līdz +85 °C. Izvairieties no pakļaušanas ekstremālām temperatūrām, augsta mitruma vai kodīgas vides iedarbībai.
- Fiziskā aizsardzība: Handle the module with care to prevent physical damage. Protect it from excessive vibration and moisture, especially during installation and operation.
- Antenas integritāte: Always ensure the antenna is securely connected. An improperly connected or missing antenna can lead to reduced performance or damage to the module's RF section.
- Barošanas avots: Provide a stable and clean 3.3V power supply. Voltage fluctuations or incorrect voltage can affect performance and potentially damage the module.
- Tīrīšana: Ja nepieciešams, uzmanīgi notīriet moduli ar mīkstu, sausu drānu. Izvairieties no šķidrumu vai spēcīgu ķīmisku vielu lietošanas.
6. Traucējummeklēšana
If you encounter issues with your DX-NR02 module, consider the following troubleshooting steps:
- Nav saziņas:
- Verify all pin connections (VCC, GND, SPI pins) are correct and secure.
- Pārbaudiet strāvas padeves apjomutage (should be 3.3V).
- Ensure your microcontroller's SPI interface is correctly configured and operating.
- Confirm the module's registers are initialized correctly according to the technical manual.
- Poor Range/Intermittent Connection:
- Check the antenna connection and ensure it is not obstructed.
- Ensure the operating environment is as clear as possible from obstacles and other 2.4GHz interference sources.
- Verify transmit power settings in the module's registers.
- Test with a lower data rate (e.g., 250kbps) which generally offers better range.
- Modulis neieslēdzas:
- Check the power supply and GND connections.
- Ensure there are no short circuits on the module or connected circuitry.
For more in-depth debugging, refer to the detailed technical manuals and development data provided by DX-SMART.
7. Lietotāju padomi
- Sāciet ar bijušoampmazāk: Begin by using the provided code examples to quickly get the module up and running. This helps in understanding the basic SPI communication and register configuration.
- Power Supply Decoupling: For stable operation, especially during transmission, ensure adequate power supply decoupling with capacitors close to the module's VCC and GND pins.
- Antenas izvietojums: For optimal range, position the module and its antenna away from metal objects and other electronic components that might interfere with the RF signal.
- Traucējumu pārvaldība: In environments with multiple 2.4GHz devices, utilize the 126-channel frequency hopping capability to find clearer channels and improve communication reliability.
8. Atbalsts un resursi
DX-SMART provides comprehensive resources to assist with the development and integration of the DX-NR02 module.
Available Information:
A complete set of materials and hardware (NR02 Development Board) is available to help kickstart your project quickly. The data package includes:
- Development Environment IDE
- Chip Technical Manual
- Moduļa tehniskā rokasgrāmata
- Testēšanas rīki
- Aparatūras informācija
- Kods Piemamples
- Atsauces saites
Download Resources:
- Oficiālā Webvietnes saite: Apmeklējiet lv.szdx-smart.com, navigate to Support > Data Download, and select the module type you purchased to download the information.
- Google Drive Access Link: https://drive.google.com/drive/folders/1tHdbces2KQ4oRbOyQuTkcjaJWZ9tdry7?usp=drive_link
If you are unable to download or require further assistance, please contact our after-sales team at Manager@szdx-smart.com. We aim to respond to your inquiries within 24 hours.
OEM & ODM Services:
DX-SMART supports OEM and ODM services, offering customized programs, appearances, and technical solutions. Please trust our abilities and technology to help solve your project challenges.
9. Pielietošanas scenāriji
The NR01/NR02 2.4GHz module is versatile and widely used in various applications requiring reliable, low-latency wireless connectivity:
- Viedā māja: For controlling smart devices and home automation systems.
- Tālvadības pultis: Ideal for various remote control applications.
- Medicīniskais aprīkojums: Suitable for medical monitoring devices.
- Industrial Sensors: Used in industrial settings for data acquisition and control.
- Droni: For wireless communication in drone systems.
- Automotive Systems: Integration into automotive electronics.
- Drošības uzraudzība: For wireless security systems.
- Pozicionēšana: In applications requiring wireless positioning.
- Balss pārraide: For wireless audio transmission.
- Austiņas: Wireless connectivity for audio devices.
- RFID Tags: For various RFID applications.
10. Kvalitātes nodrošināšana
Each DX-SMART product undergoes a rigorous 160-step quality assurance process to ensure reliability and performance. This includes 30 major and 160 minor tests, covering aspects such as RF consistency testing, multi-device coexistence testing, and environmental reliability verification.
