NRF24L01 3.3V Adapter Board – 5V to 3.3V Regulator, 8-Pin Socket Breakout

The 24L01REGL is a dedicated adapter and protection board for the NRF24L01 and NRF24L01+ 2.4GHz wireless transceiver modules. The NRF24L01 is a popular low-cost RF module, but it operates strictly at 3.3V and is sensitive to power supply noise and voltage spikes—issues that frequently cause communication dropouts or permanent damage when the module is connected directly to 5V microcontroller systems. This adapter board solves both problems by integrating an AMS1117-3.3 low-dropout linear regulator that accepts an input of 3.3V to 5V (up to 12V per some sources) and delivers a clean, stable 3.3V output to the transceiver.

The board provides a standard 8-pin female socket that accepts the NRF24L01 module directly, eliminating the need for delicate jumper wires to the module's 2×4 header. All signals are broken out to a 6-pin male header with clear labels: VCC, GND, CE, CSN, SCK, MOSI, MISO, and optionally IRQ. This single-row layout is breadboard-friendly and simplifies wiring to Arduino, STM32, and other microcontrollers. Bypass and filtering capacitors are populated on the board to suppress power supply ripple and noise, a common cause of unstable wireless links.

The adapter is compact, measuring 26mm × 19mm × 12mm and weighing approximately 6g, and it includes an onboard power indicator LED. The board is a passive power and breakout interface—it does not contain the RF transceiver itself; the NRF24L01 module must be purchased separately and inserted into the socket. It is an essential accessory for anyone using the NRF24L01 with 5V logic systems, as it protects the module, stabilizes communication, and greatly simplifies wiring.