NRF24L01 Problems on Custom Board

Projects Networking, Protocols, and Devices
1

Ok, so I have more specific problem.

Using low power nrf24l01 module.

I have made customize arduino module for low power and battery operation.

So about the power supply I have tried with CR2032 battery and using RS232 to USB converter with 3.3V onboard.

On my board there are two 100nF and on electrolitic 22uF just near the NRF power supply pins.

Problem is that when using 10cm wires, communication is working, when nrf is connected directly to the board connector then I have no connection.

About power problem, no there are no any, bigger capacitor does not help also lower power configuration also does not help.

About RF noise from ATMEGA.
Additional metal shield and 1cm spacers for nrf module does not help.

Also on 10cm cables I can set nrf position just near the ATMEGA and it can connect.

So have anyone ever tried nrf connected with very very short (less than 1cm) SPI connection to ATMEGA?

2

This does not seem to have anything in common with this very old Thread so I have suggested that the Moderator move it to its own Thread.

Please make a pencil drawing showing how you have everything connected and post a photo of the drawing. Verbal descriptions of wiring are too easy to misunderstand.

What are you powering with the CR2032?

...R