Arduino and radio modules RF 433 MHz

Hello! Today we will try to connect two Arduino by means of radio modules 433 MHz. It is very simple and will not be difficult!
Sketch and schema: drive.google.c...
useful articles:
arduino-diy.com...
lesson.iarduin...
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U139735106020
4149625807630874 Privat Bank (Ukraine)
Useful links:
RF 433 MHz: ali.pub/23xmyc
DS1307 RTC: ali.pub/1rjsbr
DHT22: ali.pub/1weunr
The cheapest Arduino Pro Mini for crafts: ali.pub/1ny2z4
HC-SR04: ali.pub/213gl0
Dimmers: ali.pub/1zmq9k
BMP280: ali.pub/1z5ck5
WS2812B: ali.pub/1x8oim
Power supply 5V 3A: ali.pub/1x8pcy
Powerful power supply 5V 3A: ali.pub/1x8pfv
TFT Displays: ali.pub/1ny2rc
Arduino Mega 2560: ali.pub/1ny34r
Label: ali.pub/1ny3ae
Lintels: ali.pub/1ny3la
Quality crosspieces: ali.pub/1ny3j5
The most convenient Keshbek:
LetyShops: goo.gl/Ev5XgI
The most profitable Keshbek for aliexpress:
Ecomerce: got.by/238t10