Description
You have recently purchased a universal controller to open your door automatically. However, when you use it, all the automatic doors in the neighbouring houses open at the same time. To solve this mystery, you decide to capture the signal from your controller.
You take out your favorite software radio and capture the signal emitted at 434MHz, with a sampling rate of 1MHz.
Note 1: To open this file with numpy
, you need to use complex64
: numpy.fromfile(<filename>, dtype = numpy.complex64)
. To use GNURadio, you need to use the block File Source
and the complex
format.
Note 2: To start the analysis, you can first use the flowgraph provided with GNU Radio.
Files
-
open-the-door.iq
5.01 MiB – 98fec9ecbd9bf6e4d59b71b142f9ef9335ee84186490e1f4082e920198b23a10 -
gr_waterfall_tuto.png
19.40 KiB – f279dc50766ef059ca0e7e0b3ad5fe3553e6810973df9b04197f2c56baca8615
Author
![](https://hackropole.fr/img/authors/elykar.a7616d5f24c6775be3985c48250c5c62ba88036cfd37e7b3c2e48f208163ee2a.png)
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