433 MHz RF Links Theory, Circuit and Program

The video above explains the basic theory that relates to data transmission, namely how electromagnetic waves are generated by antennas and how they encode 1's and 0's. Non essential information for a hobbyist, but really interesting none the less.

Component list:

•1 X Arduino Uno

•1 X 433MHz RF link pair

•3 X LED

•1 X Piezo Buzzer

•1 X Push Button

•1 X Resistor 330Ω

•50cm Single Core Wire

Equipment needed:

Soldering Iron

Step 1: Build the Transmitter

Observe the schematic and the completed circuit (video tutorial also available)

Make sure you do ALL of the following:

1. Connect the module in the following manner Vcc pin connects to Arduino 5V GND to Arduino GND and DATA to Arduino Pin 12

2.The button connects to Arduino pin 2 and needs to be earthed

3. The antenna needs to be soldered onto the module. The antenna is 35cm long and soldered into an antenna slot in the transmitter module.

4. The antenna is to be straight if possible.

Watch the video from time: 00:40 to see the circuit built from scratch

Step 2: Building the Receiver

Observe the schematic and the completed circuit
Make sure you do ALL of the following:

1. Connect the module in the following manner Vcc pin connects to Arduino 5V GND to Arduino GND and DATA (Adjacent to to Arduino Pin 12

2. Connect a red LED to Arduino pin 5

3. Connect 1 or more Green LED's to Arduino pin 7

4. Connect a piezo buzzer to Arduino pin 8

Watch the video from time: 04:11 to see the circuit built from scratch

Step 3: Upload Transmitter Code

Upload this code onto the Arduino in the transmitter circuit

Watch the video from time: 07:58 for some extra information on the code

Step 4: Upload Receiver Code

Upload this code onto the Arduino in the receiver circuit

Watch the video from time:10:03 for some extra information on the code

THATS IT YOURE DONE!!!