@sundberg84 Thanks for clarification! Do you have any idea how long i can power a NRF24 module with two AA batteries until the voltage is to low?

@gohan Thanks for this hint!
I put a jumper into Vo and Vi of the voltage regulator pins and shorten it, that's all! Not needed to shorten REG or BAT jumper! The Vi pin is connected to the Vo of the battery booster and the Vo of the voltage regulator pin is connected to Vcc of the NRF24 module.

Maybe an idea for rev 10? Battery booster powered NRF24 module?

@gohan
But i want to power the NRF24 with the battery booster and not directly with the batteries. Is this possible? The NRF24 modules is working with 1.9V than i have to replace the batteries. But with the battery booster i can drain the batteries down to 0.4 V each!

Hi,
I‘m new to MySensors and the Newbie PCB. At the weekend I build my first sensor but I had one Problem. I want to use battery powered sensors so I’m using the 3.3V battery booster. I’m have connected/soltered everything and the Arduino was runing fine. But the NRF24-Module wasn’t working. I cheked it and there was no voltage at the Vcc pin of the NRF24. Then I found out, the NRF24 is only powered if the battery jumper is closed. If the battery jumper is opened there is not voltage at the NRF24 module and also not at the 3.3 pin of the MysX pin out. Ist this correct?I thought the NRF24 is powered by the battery booster by default. Or did I get it wrong?