Wireless Communication Part 1
Today we are going to be playing with some 433 mhz radios from Parallax.
Transmitter $30
Receiever $40
Now this is only going to be one way communication, as these will either transmit or recieve but not both. This pair is extremely easy to use, they say these will range over 500ft and will speak between 12,000 – 19.2 K baud.
To use these, you simply put them inline with the wired example, on the transmitter there is a ground, power, data and power down. Don’t worry about the power down, you know where to plug the other 3. Data is going to be your tx pin.
On the reciever there are those 4 pins and a signal pin. This signal pin shows how strong the signal is from the transmitter. You can read this like any other analog value. Your data pin goes to rx.
Transmitter
Receiver
Transmitter Closeup
Receiver Closeup