Hi… All… I want to make energy monitoring wireless with nrf24l01 on uno but can’t wotk well… Signal from transmitter is loss. Why?
How would we know? You know the code, you know how it's connected. Assuming the Uno works as a receiver, what is the transmitter; or vice versa.
This is not a troubleshooting question in my opinion. I will report your post so a moderator can move it to a more appropriate section if he/she agrees.
Have a look at this Simple nRF24L01+ Tutorial
Wireless problems can be very difficult to debug so get the wireless part working on its own before you start adding any other features.