I wanted to be able to send 433 signals to my plug sockets and light switches from the Raspberry Pi. I had a Pi 2b and some time spare.
After spending a few hours doing the usual research, I came up with the below, essentially;
• Hookup 433 Receiver/Transmitter • Install WiringPi • Install 433Utils • Record Remotes • Create Python Scripts • Link py scripts to webpage buttons
These are my notes, they aren't exact. I have referenced useful pages.
Hook a 433 Transmitter/Receiver to the Pi
Good Guide: 433MHz
I had a pair laying in a draw. I don’t remember where I got them, most likely eBay. They won't have been expensive.
Google 433 transmitter receiver raspberry pi.
They look like this:
I cant find where the GPIO pins are defined, however the below is referenced online often and worked.
Ground PIN 6 GND
Data PIN 13 GPIO27
VCC PIN 4 5v
Ground PIN 9 GND
Data PIN 11 GPIO17
VCC PIN 2 5v
git clone git://git.drogon.net/wiringPi
sudo git clone git://github.com/ninjablocks/433Utils.git
sudo git submodule init
sudo git submodule update
Run RFSniffer, point your remote at the receiver, one second pushes, one code per push.
record codes /433Utils/RPi_utils/RFSniffer send recorded code /433Utils/RPi_utils/codesend 16604184
socket1_on.py import os os.system ("/433Utils/RPi_utils/codesend 4527445")
Socket1_off.py import os os.system ("/433Utils/RPi_utils/codesend 4527444")
I host a webpage with buttons on it. The buttons link to php scripts which call the python scripts.
Socket1_on.php <?php system("sudo python /pihome/public_html/socket1_on.py"); header("Location: http://192.168.1.100:4556/remote.php"); ?>
Socket1_off.php <?php system("sudo python /pihome/public_html/socket1_off.py"); header("Location: http://192.168.1.100:4556/remote.php"); ?>