Download "465 Rutgers University Confirmed: Meshtastic and LoRa are dangerous"

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0:13

I loved the project

0:16

The most dangerous LoRa project?

2:10

Flash the firmware

5:01

Tip #3

5:18

Ready to rumble

8:04

No problem with MQTT

8:13

How to connect?

9:30

MQTT is not for emergencies

11:23

Sensor Nodes are cheap

12:46

CU interface on PC or Mac is perfect for provisioning sensor nodes

13:10

The links are in the description

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Channel: TakiAcademy

465

rutgers

university

confirmed:

meshtastic

lora

dangerous

00:00:00

In 2020, I was the first YouTuber to make a video about “Meshtastic,” created by

00:00:06

Kevin Hester.

00:00:08

The project name was a merge between Mesh and Fantastic.

00:00:13

Already then, I loved the project.

00:00:16

But why is it the “most dangerous LoRa project”?

00:00:19

Here is the proof: My video was included in a study titled “NETWORK-ENABLED ANARCHY”

00:00:27

by an organization featured by the US government under the topic “instructions for encrypted

00:00:33

messaging”.

00:00:34

So stay tuned when I show you what you can do with it even if your profession is not

00:00:40

“terrorist”.

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Grüezi YouTubers.

00:00:43

Here is the guy with the Swiss accent.

00:00:45

With a new episode and fresh ideas around sensors and microcontrollers.

00:00:50

Remember: If you subscribe, you will always sit in the first row.

00:00:56

My video was mentioned in the same sentence as 3D-printed weapons.

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Why?

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Because Meshtastic creates encrypted LoRa Mesh networks independent of any mobile infrastructure.

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Hard to detect and hard to observe.

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But if you do not plan to become a terrorist.

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What is in for you?

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First: Mesh networks are fun to play with.

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Plus, because of LoRa, they have a good range.

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And third, the project evolved and can now be used with repeaters, with tunnels across

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the internet, and to transfer sensor data.

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And it supports a wide variety of devices—all exciting stuff.

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Instead of explaining how it works, we build a small network.

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I use three different devices: A simple TTGO LoRa board connected to USB power, a TTGO

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T-Beam with battery and GPS, and a newer T-Eco with an NRF52 chip and an e-paper display

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instead of an OLED.

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This results in a very low power consumption.

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It also contains a battery and GPS.

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First, we have to flash the Meshtastic software to all devices.

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Fortunately, this is very easy: If your board is based on an ESP32, go to this website,

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select your device and the requested firmware version, and “wipe and reinstall the device”.

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If you connect your device with a USB connector of the computer, you can select the proper

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COM port, hit “connect”, and “install”.

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After a few minutes, our two ESP32 devices are ready.

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The T-Echo is programmed in two steps described on the Meshtastic page: Erase the memory and

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program the new firmware by dragging two files to the USB drive created by the T-Echo.

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Done.

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The programmed Meshtastic devices can connect to a PC or Mac and to iPhones or Androids.

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A tip I learned the hard way: Use a different Smartphone for each of your Meshtastic nodes.

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Otherwise, it is easy to lose the overview.

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In this video, I connect the LoRa board to the PC because it anyway requires USB power

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and will later have a special function.

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The T-Beam is connected to the iPhone, and the T-Echo to the Android.

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Like that, I always know where you change settings and send messages.

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Before connecting our Smartphones to our devices, we must install the Meshtastic app.

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You can find them in the respective app stores.

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For the LoRa board connected to the PC, I use the web client hosted by the project team.

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It connects the LoRa board via the serial connection.

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Cool.

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The T-Echo and the T-Beam must be paired to the respective Smartphone by entering a six-digit

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number.

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Sometimes, this does not work the first time.

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Be patient and switch the Meshtastic node off and on to start over.

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The device gets a name based on its MAC address.

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This name is essential because it appears on all messages.

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As a first step, you have to select the region.

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Because I have 433MHz boards and live in Europe, I chose EU_433.

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You must check the allowed frequencies in your country before ordering your LoRa devices.

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Their frequency range is fixed.

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Sometimes, you get devices with preloaded Meshtastic software.

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Because the project moves fast, I would reprogram it with the newest firmware before starting.

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This cloud with a tick mark shows if your phone is connected, BTW.

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Now, we can go to settings to choose what we need.

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A tip if you do not know how to navigate the Android app: A left sweep is the “back”

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function.

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It took me a while to find it.

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The app on the iPhone looks different but has the same functionality.

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And an arrow for “back”.

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Now, we are ready to rumble.

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Your Smartphones should show three nodes, and you should know their names.

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This is because Meshtastic has selected a default combination that works out of the

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box.

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We can start to exchange messages between the two Smartphones.

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And no, the smartphones do not need to be connected to any network.

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You can turn off mobile data and Wi-Fi if you want proof that Meshtastic only uses the

00:05:48

built-in LoRa transceivers.

00:05:50

Just keep Bluetooth enabled.

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You can send a message to all or only to one device and, if successful, get a tick mark

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in the cloud.

00:06:02

This is possible because we use the “primary channel” and the “LongFast” profile.

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The profile is used to tweak the radio settings.

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LongFast is a good compromise between range and transmission speeds.

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They offer other profiles if you want to play.

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The different channels can be used to create privacy.

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Frustration can occur if your radios do not have the same settings.

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This is why Meshtastic introduced a QR code that distributes all channel information between

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your nodes.

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I highly recommend using this method.

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Because my LoRa board connected to my PC has no camera, I create the QR code there and

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use the Smartphone cameras to transfer the channel info to the other two nodes.

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So, we created a mesh network with three nodes.

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What is the typical range of such a network?

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As a rule of thumb: LoRa works very well if there is a line of sight between two nodes.

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In video #120, I could bridge 203km with similar modules.

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I also show how to simulate the range of a particular node.

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And I regularly get messages from small LoRa satellites 2000 km away.

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You also find videos on how to build performing antennas on this channel, BTW.

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Even by using a Harley Davidson for the job.

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But LoRa does not work well if there is no line of sight.

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With meshes, the chance to get a line of sight between two nodes becomes bigger with the

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number of mesh nodes.

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And, of course, if we place at least one node on a hill or a tall building, the chance for

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a line-of-sight connection increases a lot.

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But more about that later in the video.

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What if we want to connect to our buddy in a different town?

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No problem.

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Meshtastic provides a free MQTT server on the internet to connect all users of Meshtastic.

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But how can we connect to this server?

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We have to connect to the internet, of course.

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But, if our board uses Bluetooth, it cannot connect to the internet with Wi-Fi.

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And the NRF52 does not offer Wi-Fi at all.

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Fortunately, the project team had a marvelous idea: If you enable “MQTT Client Proxy”

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in the MQTT menu, your Meshtastic node uses the internet connection of your Smartphone!

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Very clever.

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As soon as you enable MQTT and the client proxy, as well as up- and downlink on the

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channel, you should see messages coming from unknown sources, and you should see many new

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nodes.

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This is possible because the default credentials of the mqtt server are already populated.

00:09:04

Seq messages with a number are “spam”, BTW.

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They are range-test messages of people who do not know what they do.

00:09:13

On the iPhone app, you can flip a switch to mask them out.

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I do not know if this feature already exists on Android.

00:09:22

Now, you can start messaging with a stranger or, if you find your friend, start a conversation

00:09:29

with him.

00:09:30

Of course, this method depends on the internet and is unsuitable for emergencies.

00:09:35

But still, it is handy and fun.

00:09:39

For more privacy, you could create your own MQTT server and connect your meshes to this

00:09:44

server.

00:09:46

I promised that we would talk about nodes placed at a good location.

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Meshtastic offers a particular role for such nodes: Router or its simpler sibling, repeater.

00:09:58

Because of their excellent position, they are preferred for message transfers.

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They usually are not used to creating and reading messages.

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This fits perfectly with our LoRa board without batteries and without a Smartphone connection.

00:10:13

It becomes our router and extends the range of our mesh without internet access.

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Adding solar panels to such a node can run it for at least the whole summer without attention,

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and it can serve a wide geographical area.

00:10:31

If you have internet access at the router on the hill or the tall building, you can

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enable MQTT there and connect your entire mesh to an MQTT server.

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An extremely useful function because none of the other nodes or Smartphones need internet

00:10:47

access.

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If you do not want to use your Smartphone, you can buy or build a standalone device with

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a display and a keyboard.

00:10:56

The last feature I will mention is the possibility of attaching sensors to a node.

00:11:02

This greatly extends the options because you can place sensors everywhere, even if the

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“hub” has no line of sight to all nodes.

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Other mesh nodes then automatically relay messages from “invisible” nodes.

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And as a last resort, you can place a router or repeater in a good place.

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The sensor nodes, of course, do not need a Smartphone and therefore are cheap.

00:11:28

Our T-Beam and T-Echo have a built-in GPS “sensor”.

00:11:33

So they can transfer your position if you want.

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And if your node has no GPS, you can use the one of your Smartphone.

00:11:42

Again, clever programming!

00:11:45

And finally, you can connect node-red to the MQTT broker and get the sensor readings for

00:11:51

automation and reporting.

00:11:53

So, - We were able to create a mesh network consisting

00:11:57

of three nodes - The typical range of such networks is enormous

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if there is a line of sight between nodes, but only small, if not

00:12:06

- We tried two ways of extending the range of our mesh

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- With a router or repeater on a hill or tall building, we can significantly improve the

00:12:16

range of our mesh without connecting to infrastructure - By linking to an MQTT server on the internet,

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we can extend the range to the whole world - If we connect sensors to nodes, we can create

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a mesh of sensors.

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The most prominent sensor is GPS, which shows you the position of your buddies

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- If you use the Node-Red integration, you can use the sensor readings in your automation

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or reporting - I did not cover the so-called CLI interface.

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It is particularly useful for provisioning sensor nodes

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- It is no wonder that this project is widely used and even preloaded on some Chinese boards

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One last thing: If you built your Meshtastic node, we will meet on Channel 5 on the MQTT

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server.

00:13:07

Just mention my name in your message.

00:13:10

This was all for today.

00:13:11

As always, you find all the relevant links in the description.

00:13:15

I hope this video was useful or at least interesting for you.

00:13:20

If true, please consider supporting the channel to secure its future existence.

00:13:24

Thank you!

00:13:25

Bye

Description:

In 2020, I was the first YouTuber to make a video about “Meshtastic,” created by Kevin Hester. The project name was a merge between Mesh and Fantastic. Already then, I loved the project. But why is it the “most dangerous LoRa project”? Here is the proof: My video was included in a study titled “NETWORK-ENABLED ANARCHY” by an organization featured by the US government under the topic “instructions for encrypted messaging”. So stay tuned when I show you what you can do with it even if you have a normal profession. My second channel: https://www.youtube.com/HB9BLAWireless Links: T-Beam: https://s.click.aliexpress.com/e/_DFEJ7bD T-Echo: https://s.click.aliexpress.com/e/_DcJBAbt T-Deck (with keyboard): https://s.click.aliexpress.com/e/_Dk8N1TV LoRa32: https://s.click.aliexpress.com/e/_DBTUwxV Solar-powered repeater: https://www.youtube.com/watch?si=g2oPVzoqrEeJM8Aa&v=8onU3Ov0qZw First Meshtastic video: https://www.youtube.com/watch?si=XoUeD9lnGpCrdLk8&v=TY6m6fS8bxU World Record video: https://www.youtube.com/watch?si=K--hGlNqk_NKafQy&v=adhWIo-7gr4 Satellites video: https://www.youtube.com/watch?si=5cl-Y-gOUXAz2FyM&v=ltJQjqm5bKA Antennas with Harley: https://www.youtube.com/watch?si=vgTRKBxBirBlCcNh&v=lVD-dnYLv-U Meshenger: https://www.etsy.com/listing/1390142667/meshenger-standalone-device-for?show_sold_out_detail=1 Rutgers Study: https://bit.ly/44H8xMv Patreon supporter companies: https://passiv-energie.gmbh/ https://www.welectron.com/ https://shop.yosmart.com/ YouTuber Patreon: https://www.youtube.com/@MakersMashup/ The links above usually are affiliate links that support the channel (at no additional cost to you). Supporting Material and Blog Page: https://www.sensorsiot.org/ GitHub: https://github.com/sensorsiot My Patreon Page: https://www.patreon.com/AndreasSpiess Discord: https://discord.com/invite/JfgDSa8 If you want to support the channel, please use the links below to start your shopping. No additional charges for you, but I get a commission on your purchases to buy new stuff for the channel My Amazon.com shop: https://www.amazon.com/shop/andreasspiess For Banggood https://www.banggood.com/?p=E307071053245201501N For AliExpress: For AliExpress: bit.ly/3MtXUY8 (just go on from here to your product) For Amazon.de: https://www.amazon.de/gp/search?ie=UTF8&camp=1638&creative=6742&index=aps For Amazon UK: https://www.amazon.co.uk/gp/search?ie=UTF8&camp=1634&creative=6738&index=aps For ebay.com: http://ebay.to/2DuYXBp https://www.facebook.com/unsupportedbrowser https://twitter.com/spiessa https://www.instructables.com/member/Andreas%20Spiess/ Please do not try to email me. This communication channel is reserved for my primary job As an Amazon Associate, I earn from qualifying purchases #no#midroll#ads

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