First project - RF communication and LED without Arduino?

Projects General Guidance
1

I am a beginner in the Arduino universe and my first project is to light a LED using wireless RF communication. I have read various examples on various websites, namely:

but in all cases it requires 2 Arduinos. I only have 1 arduino, some LEDs and the RF receiver and transmitter modules. I came upon this youtube tutorial

In the beginning of the video (around 1:15) the guy is able to transmit and receive RF signal without ANY arduinos. However he doesn't explain how he set it up. I understand that both the receiver and transmitter VCC and ground connections, but what about the DATA connections? How does the transmitter trigger a transmit signal, and how does the receiver receives it and lights up the LED? Can anyone explain how I can do it without any arduinos?

Regards,

Nikos

2

He appears to be keying the Tx with a high to the data input. The Rx then gives data out to light the LED.

The data out may be a lot of noise as well and this is why he adds the Arduino to select any real data on the link.

Weedpharma

3

you You can not do one arduino, you have a 2 arduino, 1x use receiver, 2x use transmitter, and read serial port.

4

weedpharma:
He appears to be keying the Tx with a high to the data input. The Rx then gives data out to light the LED.

The data out may be a lot of noise as well and this is why he adds the Arduino to select any real data on the link.

Weedpharma

So connect a wire from the positive battery terminal to the Tx data, and a wire from the Rx data to the positive LED lead and then the other LED lead to the ground?

5

Not from the battery but a 5 V supply. His description said it was connected to 5V.

Read the specifications for your specific modules. You have not supplied the actual modules you are using.

You also need a series R for the LED, 270 ohms to 1000 ohms.

The Rx data may switch high or low so you may have to experiment.

Weedpharma

6

Wont work.
The led will go on when the Transmitter TX pin is held high, but it will flicker when the TX pin is low, as the receiver data pin will still produce noise .
If you dont want to use 2 Arduinos, then you can use dedicated hardware such as SC2262 / SC2272 data encoder / decoders.