Nrf24l01 arduino doesnt work

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Suggest you follow this tutorial;

Simple nRF24L01+ 2.4GHz transceiver demo

Introduction The nRF24L01+ 2.4GHz transceiver modules are cheap and very effective but I have come across a few Threads in which people were having trouble with them so I thought it might be useful to gather together in one place a basic step-by-step sequence for getting them to work. EDIT 03 Feb 2021 - For this Tutorial install Version 1.1.7 of the RF24 library (available with the Arduino Library Manager). More information in Reply #30. Edit 29 Aug 2016. I have today downloaded and successfu…

The 3.3V supply output on the Mega is unlikly to be able to supply enough current to run the nrf24l01 transmitters, you need to arrange a seperate 3.3V supply.