NRF24L01 2.4 GHz wireless transceiver module
The nRF24L01 is a wireless transceiver module, meaning each module can both send as well as receive data. They operate in the frequency of 2.4GHz, which falls under the ISM band and hence it is legal to use in almost all countries for engineering applications. The modules, when operated efficiently, can cover a distance of 100 meters (200 feet) which makes it a great choice for all wireless remote controlled projects. ( find out a wide range of IoT And Wireless products at solicstores.in)
The module operates at 3.3V hence can be easily used with 3.2V systems or 5V systems. Each module has an address range of 125 and each module can communicate with 6 other modules hence it is possible to have multiple wireless units communicating with each other in a particular area. Hence mesh networks or other types of networks are possible using this module.
nRF24L01 Pin Configuration
|Pin Number||Pin Name||Abbreviation||Function|
|1||Ground||Ground||Connected to the Ground of the system|
|2||Vcc||Power||Powers the module using 3.3V|
|3||CE||Chip Enable||Used to enable SPI communication|
|4||CSN||Ship Select Not||This pin has to be kept high always, else it will disable the SPI|
|5||SCK||Serial Clock||Provides the clock pulse using which the SPI communication works|
|6||MOSI||Master Out Slave In||Connected to MOSI pin of MCU, for the module to receive data from the MCU|
|7||MISO||Master In Slave Out||Connected to MISO pin of MCU, for the module to send data from the MCU|
|8||IRQ||Interrupt||It is an active low pin and is used only if the interrupt is required|
How to Use the NRF24L01
The NRF24L01 module works with the help of SPI communications. These modules can either be used with a 3.3V microcontroller or a 5V microcontroller but it should have an SPI port. The circuit diagram shows how the module should be interfaced with a microcontroller.
The SPI Pins (MISO<MOSI and SCK) are connected to the SPI pins of the Microcontroller and the signal pins (CE and CSN) are connected to the GPIO pins of the MCU.
- 2.4GHz RF transceiver Module
- Operating Voltage: 3.3V
- Nominal current: 50mA
- Range: 50 – 200 feet
- Operating current: 250mA (maximum)
- Communication Protocol: SPI
- Baud Rate: 250 kbps – 2 Mbps.
- Channel Range: 125
- Maximum Pipelines/node: 6
- Low-cost wireless solution
- Wireless Control application
- Mesh Networks
- RF Remote Controllers
- Connected devices
1 x NRF24L01 2.4 GHz wireless transceiver module