ฝัง
- เผยแพร่เมื่อ 8 ก.พ. 2017
- In this video I drive my car and test the range of LoRa and a RFM69HW module. How far do they reach?
Dragino Shield: s.click.aliexpress.com/e/bfJigmbm
RFM69HW: s.click.aliexpress.com/e/cWJqHNVQ
Whisper Nodes: talk2.wisen.com.au/product-ta...
If you want to support the channel and buy from Banggood: bit.ly/2jAQEf4 (no additional charges for you)
/ andreas-spiess-7331894...
/ spiessa - วิทยาศาสตร์และเทคโนโลยี
Hi, I wonder how about bigger antenna? Mabey you didn't get your gateway because the antenna was too small?
I promise, I will use a bigger antenna next time...
i think a cheap 800/850/900 MHz GSM Yagi ~15 EUR/CHF would do a great job
Isn't Yagi unidirectional?
Yeah... Hell with the half wave and quarter wave nonsense. Use the tower as an antenna!
It won't work, but hey, its big.!!
Electronics is a male topic. So, the bigger the better...
Thank you very much for your efforts and sharing your work, I am working on my own rfm69hw network and I am anxious to see your gateways. Keep up the great work
Which software do you use for the network?
Andreas, you always manage to cover the most relevant topics with just the right level of detail. Once again, well done sir.
Many thanks!
This series has been excellent. I've shared it with a few students in the disaster management technology field. I have thoroughly enjoyed your thoroughness in how to consider components, test procedures, how to test and program and have students learn the potential and challenges of IoT devices will be. Thank you for your contribution!
You are welcome!
thank you for spending time and making all tests.
You are welcome!
Hello Andreas, the first gateway is mine (germany)... and my gateway is not located outside it is even inside my office for testing purpose... very interesting, Best Hansjörg
Line of sight is everything...
Great PoC! You helped a lot of people to understand the real potential of Lorawan and when and how it's good to apply it in the real world. Thanks again
You are welcome
Nothing like a field test, reminds-me my field tests with mobile VHF/UHF radio and local repeaters, however is amazing how long the distance which possible communicate with this small wattage Lora modules.
This proves that ultra narrow band and digital comunication toghether is a eficient way to comunicate betwen long distances.
Great job!
I am sure, I will get much more. Stay tuned... BTW: I also was on every hill finding the better position for a long distance QSO.
Very thorough and informative with a really good summary. Many thanks. Arthur
Thanks. To make a summary was the proposal of one of my viewers...
excellent. your efforts are worth appreciation. This is one input i was looking for clearing my mind. Kudos.
Glad the video was helpful!
Hi Andreas,
Thank you for very nice series of videos and happy birthday!!
P
Thanks!
this series is getting me hype , can't wait for the cheap version
Perfect! Thanks.
Bravo... nice video with lots of hardwork involved. Thanks
You are welcome!
As usual an excellent , thorough and comprehensive research video. Thank you for taking the time to do this. I look forward to your future video as I am thinking now of perhaps building a lara gateway in the south of the UK. There appears to be only 1 gateway close to my area and virtually none in the south of England apart from London.
+Colin Pamplin Good idea! Maybe you even find a good place with a big reach.
Colin Pamplin I too am based in the south of England and was disappointed by the lack of gateways.
I've ordered some components and am planning on building a single channel gateway and a testing node with attached GPS.
I was also thinking of starting a community on TTN but if London can't get going what hope do we have out in the sticks?
Just try! I also started with one subscriber...
You work so hard for us!!! A BBBBIIGGGG thank you.
You are welcome!
Very interesting stuff. After watching your lora videos I ordered gear to set up my own lora gateway
:-)
dude, you're awesome. excellent teacher, fun, enthusiastic and funny. never lose the accent. and make more videos!
Thanks!
One of my favourite youtubers! God bless you!
Thank you!
wow. just discovered lora and your youtube. thanks for publishing.
Welcome aboard the channel!
wow that was very thrilling to watch as well as informative.
Thanks for your compliment. If this was thrilling, you probably should watch my attempt to break the world record... (video #120)
Nice video and tests. Thank you Andreas.
You are welcome!
I look forward to every episode - thanks for posting, Andreas!
I wonder if your signal strength might improve from placing the devices a bit (20cm) further away from any metal components (such as the metal guard rails, etc.)
I know that this is a design consideration when mounting WiFi access points (that use 2.4ghz and 5ghz).
Just a thought...
Please keep sharing your activities with us, they are very informative!
-John
Metal not properly placed is in general not good for RF. You are right.
thanks for your series, very useful and entertaining
You are welcome!
How many sacrifices for science! :) Great stuff Andreas!
+Mauro Sedrani It was also fun! Felt like young again when we climbed the mountains to get far reaching QSOs
-13.5 dB SNR. That's amazing.
Thanks for sharing your experiences :-)
Today, I was on the road again with my Lota node. Unfortunately, only partially successful. I have to go again and try some new stuff, but I keep you updated...
Awesome MR. Swiss Accent engineer! Thanks for your nice video. Specially summary part.
You are welcome!
thanks for this great episode.
You are welcome!
Very interesting tests. Thanks for doing this for us. I also enjoyed some interesting views.
You are welcome. And if you "like" the video, your part is also done...
excellent episode. thank you. very informative.
Thanks! No nodes yet in Abu Dhabi, just 2 in Dubai ;-)
Ok i will look them up thank you
Thank you very much! A very good video and an important subject!
Thanks for your feedback!
Nice video , you have put a lot of time and money in this. Thank you!
Let's that there will be cheaper LoRa devices in future.
In one of the next videos I will show cheaper gateways...
Great work! Thany you for the effort.
You are welcome!
Thank You! From Frisco, Texas.
I hope this was useful for you. Texas seems to be very flat compared where I live ;-)
Thank you for posting ..Very good Video ..My class found it very inspirational ..
Thank you for using it in your educational work.
Hello, Mr.Andreas, Your keen video on IoT with LoRa is very useful to understand what LoRa is doing to me, Now I find on the web. For me is a startup with mmW radar sensor. Hope to see your serial useful information continuously. Great Job!
Thank you. There are many more LoRa videos on this channel
Very nice work.
:-)
Great to see a range test between to 2 devices, great work. I wonder also (like other comments) what range you could get with say a Yagi directional antenna..... although it would be best to know where distant gateways are first. Excellent video..... although watch those tower steps in the snow/rain!!
I will not use a yagi (I do not know where to buy one, because they are not allowed in this free band). But I will change the antenna to find out the differences. Mailbag viewers know, that I have already ordered many different antennas...
I have a Yagi directional for my LoRa project (SX1272 based).... but have not tested its reflection in the 868 frequency range yet. Secretly hoping the smaller omni-directional antenna will meet my need as cheaper and simpler overall.
I will do some more testing, also with a bigger (omni) antenna
where do you people get those yagis, outside europe?
Awesome Videos, thank you, Andreas.
Did you try to connect the Ground of the PCBs to the Fence or natural Ground?
No. I wanted to simulate normal usage. But anyway, it would not have helped a lot, I think.
Hi. First of all I want to thank you for your time. It was so helpful. I want to sense cows in the middle of the field where no gateway or internet is found. Which is your recommendation? Thank you my friend. Greetings from Argentina
I had to laugh when you said, "and know the suffering starts " as you began to climb the tower:)...thanks for the war driving test, it's helped me with understanding the nature of the reach of Lora.
This was my goal (not the suffering...), because you have to know it if you want to judge, if LoRa is usable for you.
This is a great video!
Glad you think so!
Great video nice results!! I also did some waredriving my longest distance 4300 meter. I use a Wemos D1 with an RFM95W and a standaard 868mhz antenna.
Did you also use the TTN network or two RFM95 nodes?
Andreas Spiess yes I use the TTN network and the TTNmapper (iOS) app for logging. There are only à few gateways where i live. I did build my own single channel TTN gateway also with an RFM95M. The longest distance to my own gateway is 2200meter and 4300meter to an official TTN gateway. unfortunately there are no hills, moutains where I live so I need to drive arround town to search the best point at this moment Iam experimenting with diferent antennas
The situation here is completely different with all the mountains. Advantages and disadvantages...
Thanks, and that tower was amazing
Glad you enjoyed it
Another great video Andreas. I was worried that my TTN Gateway wasn't achieving the range I expected, based on playing with LoRa - but your experience seems broadly similar and it has set my mind at ease. 73's G7DMQ
And maybe you do the propagation analysis. Then you can compare...
@@AndreasSpiess I did! Using www.ve2dbe.com/rmonline_s.asp The overall pattern is similar but the range is 50% of what this would predict.
Then you can try to change the parameters
@@AndreasSpiess To follow up, it was not the parameters that were the issue, it was the (commercial) TTN Gateway had a poorly matched antenna. Using an antenna analyser, it showed resonance & 50 Ohm impedance around 2.4GHz, not 868MHz. With a properly matched antenna, the range matched the propagation analysis.
I've tested several supposedly 868MHz antennas from Amazon. Most are actually 2.4GHz being sold as 868MHz.
Andreas, again a great video!
Guess the antenna would play an enormous role.
Not really comparable but some days ago, the locality I live did not have a suitable Internet connection which was really bad for me. But my brother, living ~4km away had a 16MBit Inet connection, but since there was a ~100 meter "thick"
line of trees between him and me, I always though there would be no chance for a connection.But I was wrong, one day we tried using 90 cm focussing antennas on both sides with just normal
WLAN Access Points (and very short, good quality cables) and we were able to transmit ~8MBit over
this connection. I ran this setup for years without _any_ problems!One might think that bad weather would have disturbed it ... but the opposite was the case .. the more bad the weather
(rain/fog) the better was the connection, because without a direct sight connection you need the reflection in the air.So using the right, focussing antennas I guess you can reach multiples of the ranges you measured.
Walter Steinchen Here it is a little complicated: Big antennas are not allowed. I will try once a bigger distance. The biggest problem is, to find free line of sight here in Switzerland...
Here i got my answer i ask in an other threat :-) to much antenna gain makes it illegal :-)
This video cracked me up:). Great video. Many thanks...
You are welcome!
Nice tour of your hometown area! Also quite interesting to see how Lora performs in such an environment. +1
I wished the weather would have been better...
Hi! Awesome video! Concerning this one I got a quastion: In the end you say one shouldn't start with LoRa for a connection between two (or more) devices without internet .. just basic communication between devices. - But regarding energy consumption and the great range, wouldn't it be still a great choice?? Is there any similar alternative with same specification concerning power consumption, range, price, availability (parts)?
You can use the LoRa protocol to connect two different nodes. This will work. But it is more expensive that the RF69W and not much better, as you saw in the video.
Great video !
Thank you!
Thanks
Try orienting your antennas parallel to each other (ie: using vertical antenna on whisper node as well as lora), particularly when reception is marginal.
It could make a few db of difference, due to antenna polarization.
The polarization was vertical on both sides. Because many viewers think, the antenna is important, I will try the effect of the antenna in another video.
Great video as usual. Did you here the news that Arduino and Semtech have partnered to create a Lora gateway and node for Arduino.
No. But the node exists(obviously) and I plan to build a gateway with an ESP8266, which fits good in this scenario because of its Wi-Fi capabilities. So, I do not need to wait...
Andreas Spiess thanks for another excellent Lora video, can't wait to see the ESP + Lora episode! Thanks again for all your hard work, time and patience.
Man you're my favorite vlogger
Switzerland is beautiful by the way..
Thank you!
Hi, I very much enjoy your videos. Thank you for putting in your efforts. I would like your opinion on the following case. Consider we have 10-20 devices as nodes. Some have a job to send temperature and humidity sensor readings to the server through LORA and some control valves. What technologies do you recommend to use for nodes and for gateways? I was thinking ESP32 (because i am used to it) with LORA module and Things Network Gateway. Is there any better option for controller available? did you try the Microchip LORA Module?
Maybe you watch my other videos on LoRa (playlist)?
@@AndreasSpiess any specific one? i have seen almost all of your videos
@@AndreasSpiess Thank you. Any recommended video? i think i have seen them all
Very intresting video! i would ask you if you tried different antennas to see if they can improve/decrease the range of gateway/node.
+Matteo Giovo No, I did not try different antennas. But I will in the future.
Hi Andreas, one questions that I haven't found the answer (but am sure it's buried in docs somewhere). Assume you have just two or possibly a few Lora client devices that need to communicate with each other only and no need for a LoraWAN gateway. I think the clients can talk to each other fine. But can I actually limit the power of the radio? One of my use cases is beyond the reach of home's WiFi bur well within Lora's range. I would not want to be cluttering up airwaves with a full power signal on a shared frequency. Instead I would love to power the send function of the radio to just enough power to reliable reach the listener. And if possible, cut power used by listener to shorten the range? Or is Zigbee or something better for that? I always viewed Zigbee as short range.
Excellent episode! It was both useful and interesting. Back in 2004 I created a 2.4GHz link which spanned 66 km using what became standard WiFi technology, however this required two repeater stations so I am always curious of the capabilities of long distance data collection. That system was based on products intended for short range but with 24dB parabolic antennas substituted for the small whips you are using in this video. I wonder how much your range could be improved by using a higher gain whip and isolating local metal from the antenna a bit more. My distance problems were more from protocol timing issues than power. You may be able to get amazing range with a little directional antenna.
I was thinking the exact same thing
I will do some more tests. I think, I should reach a much bigger distance only with this whip antennas. The problem is more, to find areas with line-of sight...
And also keep in mind you are not allowed to use high gain antennas in the open band.
I'm looking forward to more of this topic. I have a question and a request. The question is do you know how close to the maximum (for Switzerland of course) these nodes are in regards to transmission power using the low gain whips? The request is for additional testing to please also categorize the range with different antenna orientations, assuming the other node's antenna will always be vertical. Thanks for your excellent series.
+Peter S I have a big antenna for tests, but I am not convinced if it helps a lot. 868 MHz works very much like light.
I think about if it's become illegal if you've got too much antenna gain?
the range is quite mind blowing really, for such small and low-power devices.
You are right!
Hey, great video! New suscribe here! How about communicating point to point without a lora gateway? How can we configurate the LoRa module for the best distance? What distance can we achieve in the city?
Welcome aboard. Your questions should be answered in the videos of my LoRa playlist
Hi Adreas,
Nice video about a interesting subject!
I was searching information about LoRa because the long-range usability. I want to use this technique for sending data between sensors and a Sport-Timing platform for use in the mountains with ski racing.
I was thinking to use a TGGO combi-module, but your results with the Hope RFM95 makes me doubt. How do you connect the antenna to this RFM board without a big mismatch?
The plan is to use the LoRa elements in a private group without a Internet gateway.
I have several situations. some events are just once every few minutes, but I also want to make the Dot Matrix display's wireless, so we can put them everywhere along the track. The protocol I'm using to display the running time is transmitting every second a tiny bit of data. Becaus you explained that the number of transmissions and data is limited, I probably have to move to another protocol like the RFM69HW, because they can broadcast more often.
Both the units do not have any shielding at all, while the TGGO units all have shielding and a propper RF connector for the antenna. Strange that in your test the unshielded units perform better than the shielded...
regards,
Johan
The transmission rate has two components: The bandwidth(speed) of the module and the law. As I show in my newest videos about wireless in general, the speed of the module and its range are correlated. The law says in many countries that you only are allowed to transmit for 1% of the time (whatever that means). For critical situation, LoRa has more possibilities to trade speed vs range (consult data sheet for speed options). With a line of sight on short distances (few km), both modules will be comparable, I think. Maybe you look also at the Moteino line of Lowpower labs. Maybe they fit your requirements. And you get them with both transceivers (lowpowerlab.com/guide/moteino/ ).
Amazing video! Thanks. One question, all the 4 gateways are on ttn comunnity?
Of course. Otherwise I would not have seen my message coming through the other gateways.
Andreas Spiess my bad. I asked because I didnt find the 27km gateway on ttn page community. for curiosity did you take any power measurements? once again thanks
+Daniel Morgado It is on Weissenstein: www.thethingsnetwork.org/community/Bern/post/connect-over-49km
Just bumped into your channel, thanks for the work and video, Love the sharing,
I already Subscribed, if you happens to come to Malaysia or Singapore, buzz me, we go for a nice beer....
+M. Pathma Thanks. I sure will do :-)
Hi, I Wall take the other beer\ greetings from Mexico
Dear Andreas, thank you for your great tutorial. Have you also built a LoraWAN tester module that you can take with yourself to monitor the signal quality in areas where the mobile phone has no connection to the internet, i.e. where you can not access the TTN page to check whether the signal has arrived?
I did something like that: th-cam.com/video/J3PBL9oLPX8/w-d-xo.html
The more I know about electronics, the more I watch your older videos too and still learn new things with each video I find... I can't thank you enough, Härr Spiess! .. I'm looking for some good (e-)books on getting started with electronics as an IoT/HomeAutomation generation electronic enthusiast... I don't mind getting a recommendation for an ancient book, as long as it was very helpful for you.. I'm here to learn! Was chönd Si mir empfääle? (other are invited to respond as well.. titles with author and/or ISBN would be awesome!)
Since I do TH-cam I do not read too much anymore. I like the internet as a source of information. So I am not a big help. The only book I bought recently about electronics is this one: www.amazon.de/gp/product/0521809266/. But this is not a "getting started" book
Gruezi Andreas,
Thanks for the different videos on LoRa and LoRaWAN, I had somewhat hear of them but was not aware of the potentialities I now see with your great explanations! I have already registered on TTN and found the forum with great information, and have joined the Lausanne community, since there is some local activity already, though much smaller than what is happening in Zurich.
I have a question on the Whisper Nodes, which I had not heard before.
They very much look like Moteino, with a little more "glue" on the board and an SMA connector for the antenna, am I correct?
What is the code that you have used to do the ping tests between the two RFM69HW-based stations? I have looked into your GitHub repository but could not find anything.
I have a number of Moteinos and RFM69W/HW radios and will for use use them for "local" projects, but I look forward to test things also on the TTN and LoRaWAN new way to send IoT data.
Thanks and 73 de Luca HB9FGJ
Ach! I have just noticed you do have video #116 specifically on Whisper Nodes, I am still catching up on the TH-cam backlog and started with all the LoRa videos, and missed that... I will check it right away!
:-)
Very interesting video. Do you have a preferred seller om Aliexpress or Banggood where you buy 868 Mhz Lora antennas? As I don't have an antenna tester or spectrum analyser a recommendatio would be great
Yes
lovely work on the lora water proofing. Your towers are so high. We have towers called Poppet heads left over from the gold rush.
These are built just for fun. You also have to pay a small fee to use them. But you are pretty sure they will last when you are on top...
Andreas Spiess Ours are free. They relocate them. Must are from the 1930 to 1950s.
Hi Andreas, I've hit a road block, with Esp8266 using websockets and mqtt. I just can't get them to work together. Do you have any libraries that you can suggest? Thanks and enjoying your Lora series, great stuff!!
I never used websockets. Sorry.
Great demonstration of the RFM69 against Lora. You might also try other Lora certified nodes, like the one from Microchip.
They should all behave very similar as they have the same basic design or even the same chips.
They mostly use Semtech Lora chips, except RFM95, I believe.
Also the hope RFMs seem to be licensed products
As always it was worth watching! Your friend and my son have the same given name :-)
Both towers would be a nice place for a gateway.
Concerning place for a gateway: I know. But I do not know, how ;-)
just send a mail to the operators and ask - if you got 2 nos you lost the time for 2 mails.
You do something for your community and it's not a business - may be a school do a project with LoRa.
or even der operators of the towers can use that gateway for there own purpose. Do you think you could manage an wifi up-link to one of that towers from your home?
Maintenance and operation of such a gateway is also a Q - are there friends who could do that during the time you are at the Arabian Peninsula and earn money?
Thanks for the tips! Maybe I will do something like that... I also think, we should build a gateway with 3G or LTE access, because many good locations have no Ethernet.
I also do not know, if high gain antennas are allowed on 2.4GHz. They seem to be not allowed on 868. And without a very high gain, I do not think, I can bridge the distance. And in public, its harder to cheat...
Ich wechsel mal zu Deutsch und hoffe das ist nicht zu unhöflich den Mitlesenden gegenüber.
Ich habe gerade einmal wegen der WLAN Bedingungen bei der BAKOM umgeklickt
Und da gibt es Konzessionen für Funkversuche - da braucht man nur einen Projektleiter (er muss die Voraussetzung dipl. Ing. ETH, FH oder HTL der Ausbildungsrichtung Elektrotechnik haben - aber das hast Du ja an der ETH absolviert) der das protokolliert. Einfach mal anrufen - Nummer steht auf der Seite. Ich hatte in letzter Zeit öfter mal mit der Bundesnetzagentur bei uns zu tun wegen meiner Prüfung nächsten Monat - Die sind super freundlich, nett und auskunftsbereit.
WLAN ist übrigens im 2.4GHz Band mit 100mW EIRP ( Technische Schnittstellen-Anforderungen 784.101.21 / RIR0301 BUNDESAMT FÜR KOMMUNIKATION)
Hier in Berlin habe ich schon einmal mit einer Dipolantenne und 50mW 2,2 km überbrückt (ja freie Sicht) man braucht ja da auch keine 300MBit/s 2MBit/s würden es doch für so ein Gateway auch tun.
www.bakom.admin.ch/bakom/de/home/frequenzen-antennen/frequenznutzung-mit-oder-ohne-konzessionen/funkversuche.html
Das ist ja interessant. Vielleicht muss ich auch mal probieren, was mit 2.4 GHz drin liegt. Könnte ja auch ein NRF24 mit PA sein... Der ist noch etwas schmalbandiger., soweit ich weiss. Die Netzweerkanforderungen für LoRa sind vermutlich 9600 baud ;-)
Muss mal rumfragen, wer der Besitzer des Turms ist. Vielleicht die Stadt?
Vielen Dank, auf jeden Fall und viel Erfolg bei der Prüfung!
FYI the stereo positioning on the audio track is weird on headphones; it sounds like the L and R are being compressed separately or they're out of phase or something. Great vid, thanks!
Thanks for your comment. I will have a look at it when I do the next video. Indeed I started using a slight compression a few videos ago. Could you probably test on an older one if it is different?
I've not heard of Lora or whisper until your videos, but I am very interested based on the little bit I was able to learn from you. I live in the U.S. and I'm moving to an area with flatter land and more atmospheric disturbances doe to the closeness of the ocean. My interest is in accessing the internet over longer distances than my WiFi. Thanks and Cheers!
Please keep in mind that these devices offer only very, very small bandwidth compared to Wi-Fi.
Andreas Spiess. I searched Lora and realized that, sadly
You can go up your own town tower, that's really cool!
It is not mine ;-)
Hi, thanks a lot for the videos about Lora . i had a question ... Do you think is Lora applicable for Basement / indoor type iot applications like smart meter ? i would be very grateful if you reply ... thanks in advance
I am not sure about that. Depends, if your gateway is quite close. I do not think, that you can cover a wide area if your sensors are in the basement...
yes your experiments also tell that .. but there are products like waviot dgmatics.com/product/smart-devices/waviot-smart-wireless-electric-meter .. thats why i'm confused . i am really in doubt whether lora is truly applicable for Indoor smart meters or is it just a hype !!
+Hassin Ayaz It is a hype for the moment. There are rumors, that routers will have gateways included. Then, this scenario would work. But not if the gateway is kilometers away.
Thanks A lot for your valuable suggestion
7:33 Dawhaaat? How many tabs? You're always doing interesting stuff with these modules. Can't wait to get my hands on these. But that just caught me off guard and totally distracted me.
So it seems to be easy to distract you ;-)
Andreas, great work, fellow amateur radio N0TTE are you still working IOT?
IOT is one area I cover here. But I have no particular plan. 73 de HB9BLA.
Hi, I wonder if you could do a tutorial on how to connect two Lora nodes, where all that is required is long range line of sight communication between two arduinos. I see lots of tutorials on connecting to the LoRa network, but nothing on creating a private network with long range capability. Thanks and keep up the good work, your videos are excellent.
This is on my list. We will see...
Thank you Andreas, I look forward to it.
Using PVC Sewage pipe for a case, freaking genius. I've been struggling thinking of a cheap case I can use for some of my experiments, Home Depot here I come.
Price-performance is really good ;-)
Great that you got a >10km response. However, your experience in this video gives me pause whether it will work across 6mi (not quite LOS) to my needed sensor location. Directional antennas may be the trick since it will be a 1:1 link. Maybe the Cantenna idea; it did wonders for wifi.
Maybe you watch my world record video. Line of sight is much more important than antenna gain. Without line of sight it is ususlly hard to get a connection
Andreas Spiess I've watched most of your LoRa videos; very well produced & explained. It's entirely possible that this tech just slightly misses the mark in my environment/geography. I'll continue to research. Maybe something will turn up or I'll give up and purchase a cellular interface. Thanks.
Hey Andreas, thanks for the videos I have a question on this LoRa? let's say if you can get a signal from about 50 kilometers, what can you use it for if you're getting no signal all the time.
I think there is no use if you do not get a signal.
Andreas, if you read my question, I ask what can you use it for?
sehr interessant, danke
Bitte, gern geschehen. Hat mir viel Freude gemacht, trotz der kalten Hände.
Hi Andreas! Great teacher as always! Please fix Dragino link ;)
I found this.
s.aliexpress.com/uIbqUBvA If this price is the lowest you could create your own link from it! ;)
Should be fixed by now. Thank you!
Nice case ;) It reminded me of my time at university and when I delivered one of my electronic project in a shoebox. The professor's face was priceless. Still, I got 5 :P
So the content must have been good!
Good video
Thank you!
Wo bist Du in der Schweis? In der nahe Kreuzlingen? A long time ago, really long time ago I went to the SttatsTechnikum Konstanz.
No. I live near Basel.
Die Reichweiten sind wirklich beeindruckend!
Unterdessen sins sie bei ungefähr 700 km für LoRa ;-)
Hi! Thanks for the video, very good experience! My question is : how to explain the difference of distance between your gateway and the others one? You can reach gateway from 27km but not your gateway which is closer. Its depends of the line of sight, characteristics of the gateway,...? Thanks in advance for your answer, have a good day! Max
Maybe you watch my video about my world record. It is the line of sight much more than the gateway
Thanks! :)
Good work especially for radio communication fans. Thank you.
By the way we learned your address, we can visit you :)
In Switzerland, everybody is listed in the telephone book. So, addresses are no secret
I wonder if there's a way to use LoRa with an HF frequency (for longer propagation) and especially with an antenna in NVIS configuration for a more reliable transmission and reception, since it can overcome any hills and can reach maybe 200km of reach. I believe NVIS is for lower than 10MHz frequency, say 7MHz / 40m band, so the antenna would need to be quite long (around 20-meters long for dipole NVIS). What are your thoughts on this idea? Thanks!
The bandwidth of typical LoRa signal is 125kHz which is nearly a whole Ham band below 30 MHz... Nobody will love you for trying that.
@@AndreasSpiess great point hehe Thanks for the reply and the great videos!
Max power is 20dbi. If you change tx power level any better result or maybe changing to a better receiving antenna?
As you see in the video, the power is not important. Important is line of sight.
I have a 95% complete hardware product with NRF24 and i'm very seriously considering using the low frequency modules, because of the reach. I was quite surprised by the short reach of the nrf:\ 10x for the series on them!
The NRF24 have the advantage of higher throughput. But from a range's perspective, they play in a different league.
It is not only the low frequency, it is the small bandwidth which give these modules an advantage.
Great\this was expecting
how were you able to go up the tower easily but not sure if you could get out (luckily, all you had to do was press a button). is that swiss security? get in easily but make it hard to get out :-)?
If you do not get in you go home. Small problem. If you do not get out you have to find the right person to open the gate and stay in the cold for a long time. So the effect is much different...
good show
Thank you!
Could this tech be used to track motorcycles , similar to fleet management for trucks ?
Yes, if you have the coverage in the area.
In this video you're testing the connection of a single LoRa node. Can information be found on how the connection diminishes when multiple nodes are considered (like 10, 50, 100,..) ? Lets say that only one TTN gateway is in the area.
+ThomasHaberkorn The TTN rules support more than 1000 nodes per "full" gateway with 8 channels. Each node must only send very few messages per day. You find a link to the fair usage policy in one of my videos
You can actually hear the Lora CSS working at 12:46!
:-)
do you think esp8266 With a loco m2 (directional antenna Router) has a range Longer than this?
No, for sure not. Much to much bandwidth. Not comparable.
Hi, we may made gateway without Internet connection, for example with USB - right?
Not a LoRawan gateway
Would IT make sense if you used 1w lora module to get better signal?
Only if you live in the US. In other countries it is not allowed
Andreas, you will have a better signal if you take care on the antenas polarizations, an misaligned of 90 degree will take you a loss of 20db of you signal! In some parts of your video , we could see that the antenas was on the wrong polarization. In some cases you culd have a conection if you match the polarization.
I always used vertical polarization for the test, even if you might not have seen it in the video. Only if I got a "vertical" signal, I sometimes tried also with another position.