DOMOTICA MAY MONTH Sander Claassen John Heesterbeek Ad van Berlo Marco van Nieuwenhoven Hans Willemen MADspace community 1 1

Program * Avond 1 - 2 mei Domoticz @ RasbperryPi * Avond 2 - 9 mei Sensors & actuators * Avond 3 - 16 mei Domotics bus-systems * Avond 4 - 23 mei Blocky & node red * Avond 5 - 30 mei SDR/ LoRa / KNX / OpenHab / Strut your stuff 2 2 2

Workshop 1. Introduction SDR 2. The basic requirements 3. Getting started 3. Use case examples 4. The end-less possibilities 5. And more... 3 3 3

What is a Software Defined Radio? What is a Software Defined Radio (SDR)? Digital radio receiver (since 1970) Operation defined in software (tuning / modulation / decoding etc.) Must-have tool for hackers; tab into wireless signals Radio-waves are presented: - Audible - Graphically - Digital (via plugins) RTL-SDR (RTL2832U) and software defined radio news and projects. Also featuring Airspy, HackRF, FCD, SDRplay and more. 4 4 4

Required hardware What hardware is required? Required hardware: Pc/ laptop / Raspberry PI, or (Android) phone with OTG USB Antenna (custom antenna is required sometimes) RTL-SDR (RTL2832U Chip), Airspy, HackRF, FCD, or SDRplay SDR price range: 5 - 300 euros depending on noise ratio, frequency, Rx/ Tx features (but basically any USB DAB/ DVB-T tuner works) RTL-SDR (RTL2832U) and software defined radio news and projects. Also featuring Airspy, HackRF, FCD, SDRplay and more. Look for: Homemade Quadrifilar Helix Antenna to caputure satilites 5 5 5

Required software What software is required? SDR software: CubicSDR (Windows / Mac) or GQRX (Linux / Mac) Virtual audio pipe: VB-cable Virtual Audio Device Decoding software Audacity (freeware audio tool) WXtoImg (weather satellites) GNU radio (advanced development tool via github) https://www.vb-audio.com/Cable/index.htm 6 (free or open software listed only) 6 6

SDR software – gettings started Install required drivers for your device, and configure device settings: Apply the (magic) “Device string” for your device, and keep other parameters as is. Also note that this might differ per tool... https://www.vb-audio.com/Cable/index.htm 7 7 7

SDR software – getting started Your main frequency Your frequency spectrum The interface Your Frequency Some 433,92Mhz devices ;) 8 8 8

SDR software – getting started Your focus frequency Your frequency offset The interface Your settings to play with.. Record/ Play.. Your Frequency 9 9 9

SDR software – getting started Fast Fourier transform settings for graphical representation The interface Your Frequency 10 10 10

SDR examples Weather satellite using Homemade Quadrifilar Helix Antenna https://www.rtl-sdr.com/rtl-sdr-tutorial-receiving-noaa-weather-satellite-images/ http://www.stoff.pl/downloads.php satellite tracking http://www.wxtoimg.com/ https://airspy.com/download/ SDRsharp 11 11 11

SDR examples A 433MHz doorbell hacked! Export audio to Audacity (Freeware) Then ‘read’ / ‘modify’ Manchester data Now connect 1-dollar 433MHz transmitter to a soundcard, to hijack your neighbour's doorbell ;) https://nl.wikipedia.org/wiki/Manchestercode 12 12 12

SDR examples Advanced tooling for further encrypted signal decoding: GNU radio / Python plugins: https://nl.wikipedia.org/wiki/Manchestercode 13 13 13

Workshop 14 14 14

Program * Avond 1 - 2 mei Domoticz @ RasbperryPi * Avond 2 - 9 mei Sensors & actuators * Avond 3 - 16 mei Domotics bus-systems * Avond 4 - 23 mei Blocky & node red * Avond 5 - 30 mei SDR/ LoRa / KNX / OpenHab / Strut your stuff 15 15 15