I have four soil moisture sensors. We have 1 Nrf24l01 and Nrf24l01 Adapter. One of them is Arduino Nano.
I am combining the + and-of 4 sensors with nrf24l01 and feeding it from the Arduino’s 5V output. There is a receiver circuit without sensors. I supply the Arduino with an external 9 V battery. But when the battery drops to 7 V, it can’t get the data I sent. I already feed the receiver circuit from the computer. removed the battery from the transmitter circuit and fed it from the computer. But he doesn’t get the data again. However, I can hold the antennas to a certain position and get it correctly. I didn’t understand if the problem was with the antennas or Arduino’s feed.
Each of the sensors is 5.5 mA. Nrf24l01+pa+lna max current 115 mA. I need to put in another feed instead of 9V or am I supposed to change antennas? Thank you in advance for your help.