The nrf24 radio consumes around 15mA when in RX mode.
The stm32f103 circuit can be set to sleep mode and draw around 2uA.
If a battery has 2000mAh and the only consumer is the radio, it can drive the radio for around 133,3 hours.
Because of the battery consumption from the radio, there might be a good idea to have three nodes in the network:
Master
End device
Router
The master is directly connected to a computer and gets its energy from there. A router is connected to the main lines and can have the radio in RX mode all the time. An End Device is a device that uses a battery is energy source, therefore its good to set that radio in sleep mode as much as possible.
The nrf24 radio consumes around 15mA when in RX mode. The stm32f103 circuit can be set to sleep mode and draw around 2uA.
If a battery has 2000mAh and the only consumer is the radio, it can drive the radio for around 133,3 hours.
Because of the battery consumption from the radio, there might be a good idea to have three nodes in the network:
The master is directly connected to a computer and gets its energy from there. A router is connected to the main lines and can have the radio in RX mode all the time. An End Device is a device that uses a battery is energy source, therefore its good to set that radio in sleep mode as much as possible.