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RFM69 OOK Raw Data Receiver

Designed and coded by Felix Baessler, [email protected]

The project addresses the problem of:
      ->   Interoperability / Interconnectivity, Compatibility, Legacy   <-
in smart home automation and IoT applications.

Features:

  • Universal Receiver
    of data sent by a priori unknown types of devices
    -> no assumptions about: sync, preamble, delimiter, packet, protocol
  • Robust Reception
    featuring error correction of spikes, drops and outliers
  • Long Range / High Sensitivity
    with low reception threshold of ≈18 dBm

LICENSE

This project is released under CC-BY-NC 4.0.
The licensing TLDR is: You are free to use, copy, distribute and transmit this Software for personal, non-commercial purposes, as long as you give attribution and share any modifications under the same license. Commercial or for-profit use requires a license.
For more details see the LICENSE

Context

  • ISM are the preferred radio frequency bands (434 / 868 / 912 MHz) used in smart home automation for remote-control and sensor data acquisition over the air
  • OOK, On-Off Keying, is the modulation technique most widely found in low cost equipment. Information is transmitted by varying the duration of alternating HIGH- and LOW-signals. In general, these durations are restricted to a limited number of duration levels / categories (-> clusters)
  • Raw Data, in form of signal duration sequences, is the common base level protocol of any OOK sender / receiver

Setup Guide

This repository contains all that is needed to setup your Arduino workspace:

  • receiver.ino
  • categorizer.cpp
  • categorizer.h
  • categorizer_lib.cpp
  • recorder.cpp
  • radio_lib.cpp
  • radio_lib.h
  • RFM69_lib.cpp
  • RFM69_registers.h

Required Hardware

  • MCU: Arduino compatible mini pro 3.3V (MEGA328P)
  • Radio: Hope RFM69w
  • recommended: USB extension cable (5m) with snap-on Ferrite cores

The Radio - MCU connections are defined in radio_lib.cpp
The prototype used during the development of the project can be found on https://sites.google.com/site/rfm69arduino

Project Presentation

An introduction to the project is available on https://sites.google.com/view/ookraw