RF-Nano V3.0 (ATmega328P + nRF24L01+) Integration Board
The RF-Nano V3.0 is a development board that integrates an Arduino Nano V3.0 with an nRF24L01+ 2.4GHz wireless transceiver. By utilizing the ATmega328P in a QFN32 package, the board maintains the standard Nano footprint while eliminating the need for external wiring between the microcontroller and the radio module. This integration reduces signal noise and physical complexity in wireless mesh networks and remote sensor nodes.
Product Features
- Monolithic Integration: Combines MCU and 2.4GHz RF transceiver on a single PCB.
- Standard Footprint: Fully compatible with standard Nano shields and breadboard layouts.
- Optimized RF Path: Onboard PCB antenna with internal SPI routing for improved signal integrity.
- Enhanced Power Regulation: Dedicated LDO to handle the burst current requirements of the nRF24L01+ radio.
- USB Interface: Typically utilizes the CH340 USB-to-Serial converter for programming and power.
Technical Specifications
- Microcontroller: ATmega328P (QFN32)
- RF Chipset: nRF24L01+ (2.4GHz)
- Operating Voltage: 5V (USB) / 6Vā12V (VIN)
- Digital I/O Pins: 22
- Analog Input Pins: 8
- SRAM / Flash / EEPROM: 2KB / 32KB / 1KB
- Clock Speed: 16 MHz
- Modulation: GFSK
- Max Data Rate: 2 Mbps
Internal SPI Pin Mapping
The radio module is hard-wired to the ATmega328P via the SPI bus. The following pin definitions must be used in firmware (e.g., the RF24 library) to initialize the radio:
| nRF24L01 Signal | ATmega328P Pin | Function |
|---|---|---|
| CE | D9 | Chip Enable (Radio Activation) |
| CSN | D10 | SPI Chip Select |
| SCK | D13 | SPI Clock |
| MOSI | D11 | SPI Master Out Slave In |
| MISO | D12 | SPI Master In Slave Out |
| IRQ | D2 | Interrupt Request (Optional) |
Package Contents
- 1 RF-Nano V3.0 (ATmega328P QFN32)
- 2 15-pin 2.54mm Male Headers
- 1 3x2-pin 2.54mm Male Header (ICSP)