gentilkiwi/knrf24

A little project I made to drive some NRF24L01(+) (up to 4), via SPI.
The code is minimalist and is only able to saturate Bluetooth data channels (2402 - 2480 MHz), but can be adapted to whatever your need, code it!
It uses a Raspberry Pi Pico as MCU to drive NRF24L01(+) module(s).

Hardware

I made a board for the lulz: https://oshwlab.com/gentilkiwi/knrf24
But you have to add NRF24L01(+) modules (1 is ~OK, 2 is OK, 4 is better).

NRF24 modules

Ideally, you would like to use official NRF24L01(+) modules, search for: 'NRF24L01+ PA' (LNA not mandatory).
Counterfeits based on Si24R1 are OK.

Firmware

Firmware is built by GitHub Actions (see Artifacts)

> picotool info --all knrf24.uf2

Program Information
 name:              knrf24
 version:           0.1
 web site:          https://github.com/gentilkiwi/knrf24
 description:       knrf24 test on Raspberry Pi Pico
 binary start:      0x10000000
 binary end:        0x10002360

Fixed Pin Information
 0:                 #0 CE
 1:                 #0 CS
 2:                 SPI0 SCK
 3:                 SPI0 TX
 4:                 SPI0 RX
 5:                 #0 IRQ
 6:                 #0 LED
 7:                 #1 LED
 8:                 #1 CE
 9:                 #1 CS
 10:                #1 IRQ
 11:                #2 CE
 12:                #2 CS
 13:                #2 IRQ
 14:                #2 LED
 15:                #3 LED
 16:                #3 IRQ
 17:                #3 CS
 18:                #3 CE
 19:                User LED 3
 20:                User LED 2
 21:                User LED 1
 22:                User LED 0
 26:                User switch

Build Information
 sdk version:       2.2.0
 pico_board:        pico
 boot2_name:        boot2_w25q080
 build date:        Jan  4 2026
 build attributes:  Release

Hardware references

• NRF24L01+ - https://www.nordicsemi.com/Products/nRF24-series
  • https://docs.nordicsemi.com/bundle/nRF24L01P_PS_v1.0/resource/nRF24L01P_PS_v1.0.pdf ( PDF: https://docs-be.nordicsemi.com/bundle/nRF24L01P_PS_v1.0/raw/resource/enus/nRF24L01P_PS_v1.0.pdf )
• Si24R1 - http://www.csm-ic.com/html/ProductView.asp?ID=249

Author

Benjamin DELPY 🥝 gentilkiwi, you can contact me on Twitter ( @gentilkiwi ) or by mail ( benjamin [at] gentilkiwi.com )
This is a personal development, please respect its philosophy and don't use it for bad things!

License

CC BY 4.0 licence - https://creativecommons.org/licenses/by/4.0/