Arduino - NRF24L01 2.4Ghz Wireless Relay Switch

by vandenbrande

20K1910

Intro: Arduino - NRF24L01 2.4Ghz Wireless Relay Switch

Hello world! Today i made a Wireless switch with the NRF25L01 - 2.4ghz Wireless Module. I used a nano in the video for the transmitter but you can change it to a uno if you don't have a nano. Check out the next step for the Schematics, Code's & parts list. Also complete fritzing files included!

STEP 1: Schematic, Code & Parts List.

Wire it up like the above schematics, The Schematic with the NANO is for the TRANSMITTER and the Schematic with the UNO is for the RECEIVER.

MAKE SURE that you have installed the following libraries. Download RF24.hHere

  • SPI.h
  • nRF24L01.h
  • RF24.h

Parts list!

  • Arduino UNO for receiver
  • Arduino Nano for transmitter ( You can use 2 nano's, or 2 Uno's to if prefered.. i just used a nano cuz its nice and small)
  • NRF24L01 2.4 Ghz Wireless Module.
  • KY-019 1 Channel relay
  • Jumper Wires Set MM/FF/MF
  • Perfboard / prototype board for buttons (or just a Solderless BreadBoard)

Good luck!

Buy sensors here: http://arduinosensors.nl

See more projects on my blog! http://blog.arduinosensors.nl/

6 Comments

billwhite0847 4 years ago

Arduino: 1.8.9 (Windows 10), Board: "Arduino/Genuino Uno"
C:\Users\BILL\Documents\Arduino\sketch_wirless_relay_recver_aug27b\sketch_wirless_relay_recver_aug27b.ino: In function 'void loop()':
sketch_wirless_relay_recver_aug27b:27:12: error: void value not ignored as it ought to be
done = radio.read(DataMgs, 1);
^
exit status 1
void value not ignored as it ought to be
This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.
Hi this the error that will not allow this sketch to compile on arduino uno r3 from Arduino - NRF24L01 2.4Ghz Wireless Relay Switch
please help me
Regards BILL White

koselan77 3 years ago

Bill, I think you need to replace your current RF24 library. You have to use RF24-master library as Vandenbrande mentioned above.... ("Download RF24.hHere")

SeanF114 5 years ago

Arduino: 1.8.6 (Windows 8.1), Board: "Arduino Nano, ATmega328P (Old Bootloader)"

C:\Program Files (x86)\Arduino\arduino-builder -dump-prefs -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -tools C:\Program Files (x86)\Arduino\tools-builder -tools C:\Program Files (x86)\Arduino\hardware\tools\avr -built-in-libraries C:\Program Files (x86)\Arduino\libraries -libraries C:\Users\Sean\Documents\Arduino\libraries -fqbn=arduino:avr:nano:cpu=atmega328old -ide-version=10806 -build-path C:\Users\Sean\AppData\Local\Temp\arduino_build_337003 -warnings=none -build-cache C:\Users\Sean\AppData\Local\Temp\arduino_cache_909506 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.arduinoOTA.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avrdude.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avr-gcc.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -verbose C:\Users\Sean\Desktop\Receiver\Receiver.ino

C:\Program Files (x86)\Arduino\arduino-builder -compile -logger=machine -hardware C:\Program Files (x86)\Arduino\hardware -tools C:\Program Files (x86)\Arduino\tools-builder -tools C:\Program Files (x86)\Arduino\hardware\tools\avr -built-in-libraries C:\Program Files (x86)\Arduino\libraries -libraries C:\Users\Sean\Documents\Arduino\libraries -fqbn=arduino:avr:nano:cpu=atmega328old -ide-version=10806 -build-path C:\Users\Sean\AppData\Local\Temp\arduino_build_337003 -warnings=none -build-cache C:\Users\Sean\AppData\Local\Temp\arduino_cache_909506 -prefs=build.warn_data_percentage=75 -prefs=runtime.tools.arduinoOTA.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avrdude.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -prefs=runtime.tools.avr-gcc.path=C:\Program Files (x86)\Arduino\hardware\tools\avr -verbose C:\Users\Sean\Desktop\Receiver\Receiver.ino

Using board 'nano' from platform in folder: C:\Program Files (x86)\Arduino\hardware\arduino\avr

Using core 'arduino' from platform in folder: C:\Program Files (x86)\Arduino\hardware\arduino\avr

Detecting libraries used...

"C:\\Program Files (x86)\\Arduino\\hardware\\tools\\avr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10806 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\cores\\arduino" "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\variants\\eightanaloginputs" "C:\\Users\\Sean\\AppData\\Local\\Temp\\arduino_build_337003\\sketch\\Receiver.ino.cpp" -o nul

"C:\\Program Files (x86)\\Arduino\\hardware\\tools\\avr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10806 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\cores\\arduino" "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\variants\\eightanaloginputs" "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\libraries\\SPI\\src" "C:\\Users\\Sean\\AppData\\Local\\Temp\\arduino_build_337003\\sketch\\Receiver.ino.cpp" -o nul

"C:\\Program Files (x86)\\Arduino\\hardware\\tools\\avr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10806 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\cores\\arduino" "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\variants\\eightanaloginputs" "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\libraries\\SPI\\src" "-IC:\\Users\\Sean\\Documents\\Arduino\\libraries\\RF24" "C:\\Users\\Sean\\AppData\\Local\\Temp\\arduino_build_337003\\sketch\\Receiver.ino.cpp" -o nul

"C:\\Program Files (x86)\\Arduino\\hardware\\tools\\avr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10806 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\cores\\arduino" "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\variants\\eightanaloginputs" "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\libraries\\SPI\\src" "-IC:\\Users\\Sean\\Documents\\Arduino\\libraries\\RF24" "C:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\libraries\\SPI\\src\\SPI.cpp" -o nul

"C:\\Program Files (x86)\\Arduino\\hardware\\tools\\avr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10806 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\cores\\arduino" "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\variants\\eightanaloginputs" "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\libraries\\SPI\\src" "-IC:\\Users\\Sean\\Documents\\Arduino\\libraries\\RF24" "-IC:\\Users\\Sean\\Documents\\Arduino\\libraries\\RF24\\utility" "C:\\Users\\Sean\\Documents\\Arduino\\libraries\\RF24\\RF24.cpp" -o nul

Generating function prototypes...

"C:\\Program Files (x86)\\Arduino\\hardware\\tools\\avr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -flto -w -x c++ -E -CC -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10806 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\cores\\arduino" "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\variants\\eightanaloginputs" "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\libraries\\SPI\\src" "-IC:\\Users\\Sean\\Documents\\Arduino\\libraries\\RF24" "C:\\Users\\Sean\\AppData\\Local\\Temp\\arduino_build_337003\\sketch\\Receiver.ino.cpp" -o "C:\\Users\\Sean\\AppData\\Local\\Temp\\arduino_build_337003\\preproc\\ctags_target_for_gcc_minus_e.cpp"

"C:\\Program Files (x86)\\Arduino\\tools-builder\\ctags\\5.8-arduino11/ctags" -u --language-force=c++ -f - --c++-kinds=svpf --fields=KSTtzns --line-directives "C:\\Users\\Sean\\AppData\\Local\\Temp\\arduino_build_337003\\preproc\\ctags_target_for_gcc_minus_e.cpp"

Compiling sketch...

"C:\\Program Files (x86)\\Arduino\\hardware\\tools\\avr/bin/avr-g++" -c -g -Os -w -std=gnu++11 -fpermissive -fno-exceptions -ffunction-sections -fdata-sections -fno-threadsafe-statics -MMD -flto -mmcu=atmega328p -DF_CPU=16000000L -DARDUINO=10806 -DARDUINO_AVR_NANO -DARDUINO_ARCH_AVR "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\cores\\arduino" "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\variants\\eightanaloginputs" "-IC:\\Program Files (x86)\\Arduino\\hardware\\arduino\\avr\\libraries\\SPI\\src" "-IC:\\Users\\Sean\\Documents\\Arduino\\libraries\\RF24" "C:\\Users\\Sean\\AppData\\Local\\Temp\\arduino_build_337003\\sketch\\Receiver.ino.cpp" -o "C:\\Users\\Sean\\AppData\\Local\\Temp\\arduino_build_337003\\sketch\\Receiver.ino.cpp.o"

C:\Users\Sean\Desktop\Receiver\Receiver.ino: In function 'void loop()':

Receiver:27:12: error: void value not ignored as it ought to be

done = radio.read(DataMgs, 1);

^

Using library SPI at version 1.0 in folder: C:\Program Files (x86)\Arduino\hardware\arduino\avr\libraries\SPI

Using library RF24 at version 1.3.1 in folder: C:\Users\Sean\Documents\Arduino\libraries\RF24

exit status 1

void value not ignored as it ought to be

VicençJ 5 years ago

Thank you very much for your help in advance, but when I compile the reciver it says:

C:\Users\HP\Downloads\receiver_13072018\receiver_13072018.ino: In function 'void loop()':

receiver_13072018:27: error: void value not ignored as it ought to be

done = radio.read(DataMgs, 1);

Dzintars 7 years ago

Do you check working distance for you Wireless Relay Switch?

How far its work?