Atmega328P with nRF24L01

Projects General Guidance
1

Hello Everyone,
I hope everyone is doing great.
I am connecting nRF24L01 with ATmega328P. Connections are correct. The code is working correctly on Arduino UNO and Arduino Nano. But my devices are not connecting with each other when i am doing the same on ATmega328P.

It would be great if someone can guide. All the basic codes are working fine. Is there anything that i need to add in my circuit?

|Atmega328P(Physical Pin No)|nRF|
|Pin 7| |VCC|
|Pin 8| |GND|
|Pin 17| |MOSI|
|Pin 18| |MISO|
|Pin 19| |SCK|
|Pin 9| |CE|
|Pin 8| |CSN|

Any guidance will be appriciated

Thank you in advance.

Edit 1:
CE is on physical pin 15
CSN is on physical pin 14

2

Pin 8 seems to be mentioned twice.
Anyway, show a schematic and your code. If you talk about physical pins also say which Atmega328p package you are using.

2 Likes
3

Yes ,my bad i mentioned digital pins which we use in arduino. I connected CE on pin 15 and CSN on pin 14. Will share codes and schematic in some time.
Thank you for making me notice.

4

-PU ? -AU ? U-TH ?

5

ATmega328P U

6

Hello
Thank you everyone for the guidance and tips.
The issue was solved on the same day. Actually I forgot to add decoupling capacitor and now the system is working correctly.
I added one decoupling capacitor(10uF) between VCC and GND and now two devices are connecting with each other.

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