<![CDATA[IRQ D2 connection of NRF24L01+]]>Some sketches here on the forum use D2 as an input.

Acording to http://www.mysensors.org/build/connect_radio this port is used by the NR24L01+.

And according to https://arduino-info.wikispaces.com/Nrf24L01-2.4GHz-HowTo, the connection of the IRQ pin is not needed by most software.

Which leads to the question: is this connection really used by mysensors?

]]>https://forum.mysensors.org/topic/1517/irq-d2-connection-of-nrf24l01RSS for NodeSun, 15 Mar 2026 17:54:27 GMTWed, 10 Jun 2015 08:37:40 GMT60<![CDATA[Reply to IRQ D2 connection of NRF24L01+ on Fri, 19 Feb 2021 14:45:38 GMT]]>@mfalkvidd Thanks - you are on fire today (that was quick reply)! ;)

]]>https://forum.mysensors.org/post/109227https://forum.mysensors.org/post/109227Fri, 19 Feb 2021 14:45:38 GMT<![CDATA[Reply to IRQ D2 connection of NRF24L01+ on Fri, 19 Feb 2021 14:37:20 GMT]]>@FotoFieber said in IRQ D2 connection of NRF24L01+:

is this connection really used by mysensors?

It is not used by default. It is possible to use it. There have not been any changes regarding this in MySensors so far.

]]>https://forum.mysensors.org/post/109226https://forum.mysensors.org/post/109226Fri, 19 Feb 2021 14:37:20 GMT<![CDATA[Reply to IRQ D2 connection of NRF24L01+ on Fri, 19 Feb 2021 14:26:32 GMT]]>@hek Is this still the case with 2.3.2 ? - (this reply is years old).

]]>https://forum.mysensors.org/post/109225https://forum.mysensors.org/post/109225Fri, 19 Feb 2021 14:26:32 GMT<![CDATA[Reply to IRQ D2 connection of NRF24L01+ on Wed, 10 Jun 2015 09:13:45 GMT]]>No D2/IRQ functionality is currently not used by the MySensors library. So you can safely use the pin for something else if you want. But I'd still like to have it connected in the guides for future needs.

]]>https://forum.mysensors.org/post/15315https://forum.mysensors.org/post/15315Wed, 10 Jun 2015 09:13:45 GMT