SDR -- I knew it would happen eventually...
bernard at littau.org
Tue Apr 18 13:36:59 PDT 2017
Pretty much a lurker here on this list, but having a great time watching :-)
So we were test riding our bikes down our street and made a u-turn by our newest neighbor, who had recently put in a full property six foot fence to protect baby from bears. I'm not kidding, mom and toddler were outside one day five minutes before they spied a small bear outside, through their kitchen window. With a fence comes a gate, and of course it's an electric gate. I own a small gate from the same vendor - Might Mule; so I know a little about the gates.
My first thought upon seeing the new gate was: What would it take to hack their gate? Short google later I found: https://www.youtube.com/watch?v=II3kHwo2Cpk
I understand what he is doing. My Nooelec dongle came yesterday. Had a good time playing with it before bed last night, and was somewhat disappointed to find out it was only a recieiver. So the Yardstick One is the transmitter. Duh!
Since we have a gate, we have the problem of allowing friends and neighbors access. Remotes are $25 a pop. I have a RPi set up with a GSM hat. Was thinking of having people sending a SMS text code to open the gate to the RPi. I could hardwire the RPi to the gate, or I could hack a remote to send with a GPIO, but I really liked the idea of synthesizing the code and transmitting it like the gate hack video.
I am looking at the Yardstick One, and right away see the HackRF One. I was hoping for a $25 solution with NESDR dongle. Now I know I need a $100 Yardstick One. The Yardstick One is not a SDR. Do I really need a $300 HackRF? I hate being a techie, sometimes ;-) The broader range and flexibility of the HackRF is appealing. Would like to know more about the transmit power on each.
Anyone played with the Yardstick One and/or the HackRF One? Are there other options you might know about? The Yardstick One comes with a python lib that allows the gate code to be sent via a string of hex values. Cool. Can anyone ball park for me what it would take to do this with a true SDR like the HackRF one?
I knew the day would come where I would get into SDR. Never thought it would be over hacking a gate :-) Techies are weird!
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