Multiple led for multiple pushbuttons using nRF24l01

#1

I’m trying to do a project of led switching,
2 arduinos and wireless using nRF24l01.

If I press 1st button - 1st led should blink which
is in 2nd Arduino
If it is 2nd button- 2nd led should blink
Which is in 2nd Arduino
Any ideas guys.
Coding needed guys.

#2

Hi Elai,

You could start with assembling and testing these two circuits:

  1. Arduino uno with buttons and NRF24L01
  2. Arduino uno with LEDs and NRF24L01

I would also add a 10uF capacitor to in parallel with the pins of the NRF24L01 like this

Since Circuito.io doesnt provide codefor the NRF24L01 I would suggest installing the best library for it from here
The excellent documentation for it is here

You can try to run the example GettingStarted_HandlingData
Notice that you need to set the transmitting arduino (with the buttons) to role 1 and radionumber 1 and the radio pins correctly:
bool radioNumber = 1;
bool role = 1;
RF24 radio(2,10);

you need to set the receiving arduino (with the LEDs) to role 0 and radionumber 0 and the radio pins correctly:
bool radioNumber = 0;
bool role = 0;
RF24 radio(2,10);

once you get them working you can try to merge the code of the RF24 example and the code from circuito.

Let us know how it turned out, please :slight_smile:

Good Luck!

Ziv from circuito.io

1 Like
#3

Hello!

I´m also working on a same type of project currently! But it’s supposed to be a prototype of a remote controller for a rising door. It’s supposed to simulate the door rising and closing with the LED’s for example, you press one of the buttons and the other LED lights up for around 10 seconds and then shuts off simulating the door opening. And by pressing the other button the other LED lights up for 10 seconds and shuts down simulating the door closing. could this same type of schematic work with my project aswell with little tweaks to the code? Also robo-ziv mentioned about adding a 10uF capacitor to the remote where would that be placed exactly? the link doesn’t seem to open.

I’m sorry I’m still a student and learning this stuff and ain’t much of a coder myself :smiley:

Thanks!

#4

Hello again!

Also gonna add that the documentation can’t be seen also would highly appreciate to see it!
Currently the LED’s and the buttons work according to the test in serial monitor but I cannot seem to get them connected simply put, the LED’s don’t light up when I press the buttons. Is there something I am missing from the code perhaps?

Thank you!