007 Basics of Wireless Communication Part 2
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- Опубликовано: 1 июл 2024
- In part one of this video, we started to answer the nine most important questions about wireless communications for Arduino Makers. In this video, we will continue and dig more into the matter. If you did not already watch the first part, I strongly suggest clicking on the link in the upper right edge of your display now.
Grüezi RUclipsrs. Here is the guy with the Swiss accent. With a new episode and fresh ideas around sensors and microcontrollers.
In the first part, we talked a lot about the influence of carrier frequency and started to understand the concept of bandwidth. In this video, we will cover
- The significance of bandwidth on wireless communication
- The different modulation principles
- Methods to increase the reliability of wireless connections
- And we will learn which methods were preferred by spies
And we will use all our knowledge to compare two well-known wireless modules, the NRF24L01, and the RFM69. Both representing very different concepts
Links:
Part 1: • #219 9 Important Quest...
NRF24L01+: s.click.aliexpress.com/e/bHFXGCkC or bit.ly/2Ngxwzx
NRF24L01 Long Range: s.click.aliexpress.com/e/EelCKjA or bit.ly/2NgExQN
RFM69HCW: s.click.aliexpress.com/e/cfm7Bn1m (Always use high power version, you can reduce power if needed)
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Thank you so much for these videos, I'm working on my first wireless project right now and these have been a huge help so far. Can't wait for the rest!
You're very welcome!
really appreciate your content, please keep it up. The explanations were clear. I understood the basic concepts of carrier, modulation and bandwidth and the tradeoffs that come with them. Cool
Cool! Glad you were able to name the most important topics.
You are a very interesting person with even more interesting content. Me as a beginner in RF am learning a lot from you. Thank you for all of your videos about everything on both of your channels! Greetings from the Netherlands!
I am glad you can learn something. This channel was founded for interested people who want to get more involved with wireless and RF...
This is extremely helpful !!
Glad you think so!
Andreas, many thanks. Good explanation! I remember my lectures @university keep contnuing,
You are welcome! Indeed, 30 years ago these things were taught at universities more than today :-(
Exactly video thank you.
You are welcome!
yay i need to watch this again :)
A lot of topics in a short time, I know…
Excellent introduction to communication theory! Looking forward to the more detailed presentation of this material. It reminds me of the engineering university courses that I took, 30 years ago. :-)
Unfortunately, at universities, we learned more about this topic 30 years ago than now. That is one reason for this channel.
@@HB9BLA I agree! In the last 10 years, you can get an electrical engineering degree without taking a course in thermodynamics! Just because an EE doesn't use TD daily, doesn't mean that they don't need to understand it. Keep up the good work.
Great content !
Thank you!
Morning Andreas, keep it up.
Now it is morning here. Good evening ;-)
@@HB9BLA Check you Messager mate.
As always an excellent video. One question: after 4:00 you you mention that "the signal has no distinct peaks" (FM modulation). I believe that periodic signals always have a discrete spectrum, and suspect that the discrete lines are not visible due to the bandwidth of the FFT analysis (windowing) (see the broad peaks in the AM modulation example). Maybe you can see the discrete spectrum better if you set the modulation frequency higher. - In addition, with the FM spectrum you probably see another artefact: the spectrum does not always have the same shape, sometimes it is 'flat top', sometimes it is skewed to the right or left. Does the sampling length play a role here?
Thank you for your vontinued effort!
You are right. If you modulate it with one frequency it also has peaks and my RBW was probably too wide.
Thanks for the videos... You sound tired or sick. If so, I hope you feel better soon.
No problem here. This video Is cross-posted from my main channel
This made me think about number stations and the secret messages on BBC.
I do not know anything about these stations.
@@HB9BLA 🤣 I think your teasing.
OK for RF transmission, are you going to do a video on IR transmission?
Not on this channel. Maybe on my main channel
At the beginning of the video you refer to bandwidth as a quantity with the physical dimension of hertz. Later you talk about bits per second. How does that fit together?
Shannon's law (C = B log2< (1 + S/N)) shows the relation between bandwidth B and the highest attainable error-free data speed in bps C.
Gibt es eigentlich gerichtete Antennen für LoRa und ergibt sich ein Vorteil?
Man kann Richtantennen für alle Frequenzen bauen. Bei LoRa nützen sie nicht so viel. Ich habe auf meinem Hauptkanal zwei Videos über die Ausbreitung von LoRa gemacht.
@@HB9BLA ruclips.net/video/6cVYsHCLKq8/видео.html das hab ich gesehen was wäre das Andere?
ruclips.net/video/n911zTNIn8E/видео.html
Such nach „world record“ und nach „wardriving „
@@HB9BLA Ach stimmt da war mal was