jderehag / rpi-rfsniffer

Allows you to record RF signals and play them back on a Rapsberry Pi.

rpi-rfsniffer

Allows you to record RF signals and play them back on a Rapsberry Pi.

Nowadays, many remotes are sending over cheap RF transmitters. Especially alot of the home automation devices usually communicate over these RF links.

Installation

Through pip:

$>sudo pip install rpi-rfsniffer

Latest development version (in linux):

$>git clone https://github.com/jderehag/rpi-rfsniffer.git
$>cd rpi-rfsniffer
$>sudo python setyp.py install
$>

Usage

By default it assumes you have attached the transmitter on pin 11 and the recevier on pin 13:

# To record signal
$>rfsniffer record remotename.button1
  Press remotename.button1
  Recorded 64 bit transitions
$>

# To transmit/send that signal (twice)
$>rfsniffer play remotename.button1 remotename.button1
$>

# To dump all the recorded signals
$>rfsniffer dump
  remotename.button1
$>

Hardware guide

All pin assignments refer to board numbers (rather than chipset pin layout). Allthough it has only been tested on RPi2, according to RPi doc all boards should be pin compatible. Worth mentioning is that it is assuming soft pull-down resistor mode for all recordings, so you should avoid GPIO pins 2-3 since these have fixed pull-up resistors.

Signal recording

Worth mentioning is that rfsniffer only is a thin wrapper around RPi.GPIO. rfsniffer simply reads bitflips using RPi.GPIO.wait_for_edge(..) and records the timing between these transitions. It ignores any signals with fewer than 5 transitions due to that its assumed that most RF systems have atleast a 5 bit preamble. Furthermore, it will continue reading a signal until atleast 1 second has passed without any additional signals. So if you record a buttonpress, you will likely want to release the button as you would normally so that rfsniffer can detect that there are no more signals and then store the signal in the database.

rpi-rfsniffer's Issues

fix timeout

on rpi4 and rpi3 not working this script for record
use this code

its worked!
fork branch with fix https://github.com/lesha369/rpi-rfsniffer

Cannot sniff the codes

After running the code rfsniffer record remotename.button1 the instruction "Press remotename.Button1" appears and even after pressing my controller button, the codes are not registered!

I have double checked my Receiver and Transceiver GPIO pin connections 27 and 17 respectively.

Hope you can shed some light on the matter! Thanks!

Pin numbering

Which one is it?

Broadcom GPIO numbers, board numbers ?

can't get event with rfsniffer in raspberry pi4

Hi!
I've bought a transmitter and receiver (https://mary.codes/blog/home_automation/quick_and_dirty_fan_hacking_with_raspberry_pi/)
When I do rfsniffer don't detect any event.
Do you know if it's compatible with rasp 4?
Thanks

Decoder for RFSniffer

Just wanted to let you know that I created a small "decoder" to analyze the RFSniffer dumps. Thought it might be of interested to you and others. Feel free to close this issue if it is irrelevant or if you want to move the info somewhere else.

https://github.com/Swiftwork/rfsniffer-decoder

Kind regards

question!

how to setup and how to chose the pin for transmitter and receiver?

Bad command on the rpi-rfsniffer page

Describe the bug
Here: https://pypi.org/project/rpi-rfsniffer/

Installation info says:
sudo python setyp.py install
Should be:
sudo python setup.py install

Already mentioned to PyPi, they think I should open it here
pypi/warehouse#5388

Home Assistant support?

It's possible to adapt rfsniffer to Home Assistant (HASS)?
Thanks!