Destroyer_
Posts: 3
Joined: Wed Nov 14, 2018 4:46 pm

Ways to send data wirelessly

Wed Nov 14, 2018 5:08 pm

Hi, guys, I wanted to ask you if there which ways there are to transmit Data (a pic or webcam) wirelessly. I want to build a weather station with a live webcam. The station will be about 2km away. I don't want to buy a sim card for my pi. I don’t want to use walkie-talkies because everybody would hear my bit by bit transmission.

I hope you guys have better ideas than me.


Destroyer_
Posts: 3
Joined: Wed Nov 14, 2018 4:46 pm

Re: Ways to send data wirelessly

Thu Nov 15, 2018 1:46 pm

Do need a special receiver or is a normal 2.4ghz wifi device able to see the signal from the yagi antenna?

User avatar
topguy
Posts: 4996
Joined: Tue Oct 09, 2012 11:46 am
Location: Trondheim, Norway

Re: Ways to send data wirelessly

Thu Nov 15, 2018 2:13 pm

I dont think you need any special circuit and if you get a USB wifi adapter with a SMA connector, you can buy a commercial available Yagi antennas also.

https://www.amazon.com/dp/B008Z4I7WQ/re ... PDKIKX0DER

https://www.amazon.com/Alfa-AWUS036NHA- ... 004Y6MIXS/

But all of this might be a moot point if there is a big hill blocking the line of sight between your webcam and the receiving end.

Destroyer_
Posts: 3
Joined: Wed Nov 14, 2018 4:46 pm

Re: Ways to send data wirelessly

Thu Nov 15, 2018 4:30 pm

The Wikipedia page says that Yagi Antenna is transmitting or sending data: https://en.m.wikipedia.org/wiki/Yagi–Uda_antenna
If I want to send the pi a command I would need a second antenna facing my home?

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