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Electronics

How to copy a garage keyfob and send it with an Arduino

behindthesciences | January 27, 2019
Garage door openers primary operate on 433 MHz frequency band. The technology of these fobs is very basic and crude, and have no security or encryption in place.
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Coding

How to get the power level of two or more RF signals

behindthesciences | January 9, 2018
In our previous post, we showed you how to set up two RTL-SDR dongles to work in a Raspberry Pi and run a python library: pyrtlsdr. Get the
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Electronics

How to set up Raspberry Pi 3 to use RTL-SDR USB dongles and run Python scripts

behindthesciences | January 6, 2018
In this post you will learn how to use one or more RTL-SDR dongles in your Raspberry Pi and set up to use a Python library to develop
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Tech Reviews

7-port USB 3.0 Hub

behindthesciences | January 3, 2018
The problem When using different USB devices in your PC, you may have found two issues: You run out of ports in your PC: most PCs come with
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Signal Processing

How to record the garage door openers signal

behindthesciences | September 5, 2017
If you want to record your garage door opener signal in order to, for example, see the coded pulses you can do it with a RTL-SDR dongle. If
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Tech Reviews

RTL-SDR dongle: Review

behindthesciences | August 28, 2017
  In this post we will be reviewing the RTL2832U dongle, available at Gearbest for only about 8 €.     What it is This is a portable
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