Overview
The NRF24L01 Adapter Board is designed to simplify the connection of the NRF24L01 2.4 GHz wireless transceiver module to microcontrollers. It provides voltage regulation, level shifting, and a standard pin layout, allowing the NRF24L01 to operate safely at 3.3 V even when powered from a 5 V system like Arduino.
Key Features
Provides stable 3.3 V supply for the NRF24L01
Supports 5 V logic level conversion from Arduino or other 5 V microcontrollers
Compatible with Arduino, ESP8266, ESP32, STM32
Standard GND, VCC, CE, CSN, SCK, MOSI, MISO, IRQ pin layout
Includes filter capacitors for voltage stabilization
Breadboard-friendly or stackable with modules
Technical Specifications
| Parameter | Specification |
|---|---|
| Input Voltage | 3.3–5 V DC |
| Output Voltage | 3.3 V stabilized for NRF24L01 |
| Logic Level | 5 V tolerant inputs (level-shifted to 3.3 V) |
| Power Supply | Onboard LDO voltage regulator + filter capacitors |
| SPI Interface | CE, CSN, SCK, MOSI, MISO |
| Indicator | Optional power LED on some boards |
| Dimensions | ~24 × 16 mm (typical) |
| Pin | Function |
|---|---|
| VCC | 3.3 V stabilized output for NRF24L01 |
| GND | Ground |
| CE | Chip Enable (connects to microcontroller GPIO) |
| CSN | SPI Chip Select |
| SCK | SPI Clock |
| MOSI | SPI Master Out |
| MISO | SPI Master In |
| IRQ | Optional interrupt line |
| 5 V / Vin | Input from microcontroller or USB |
Applications
Easily connect NRF24L01 modules to Arduino, ESP8266, or ESP32
Wireless sensor networks
Robotics and remote control projects
STEM labs for learning wireless communication
IoT prototypes with multiple nodes
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