Date   
Re: RPi / DRAWs Connectivity in the Field and at Home #draws #field #networking #avahi

Jim Erickson
 

I do the opposite actually. My raspberry pi’s connect to my home network via Ethernet, which I statically map with dhcp and then I set the WiFi on the pi up to be an access point using dnsmasq and hostapd.  Then when I’m in the field, I connect to my pi’s WiFi and use VNC or ssh or whatever. 

I’m just in the middle of configuring a pi with the new Draws_10 image and I do have some notes I could share if interested. 

Jim

On Apr 2, 2019, at 16:40, john.chabalko@... wrote:

This is probably more of a RaspberryPI question than it is a DRAWs specific question but i think this is likely a pretty common use case amongst DRAWs users.

I use my RPi/DRAWs at home and outside (remote). At home i have it join my home wifi on boot, i have a static IP address assigned to it at startup via DHCP and a DNS name assigned to that static IP. I connect to it via VNC or ssh/terminal. It works great.

What the configuration to do you use when you're out in the field and want a reliable connection to it via VNC/ssh? I'm assuming setting it up as an access point and connecting to that access point with your tablet laptop, and then to the RPi via VNC? Similar to this (either bridged, or just a standalone access point)?

Does anyone have guidance on the "ideal" or most reliable way to do this for radio use?

Re: RPi / DRAWs Connectivity in the Field and at Home #draws #field #networking #avahi

 

What the configuration to do you use when you're out in the field and want a reliable connection to it via VNC/ssh?
That would be a use case for a 44 net VPN.

Re: RPi / DRAWs Connectivity in the Field and at Home #draws #field #networking #avahi

john.chabalko@...
 

I also haven't figured out yet (due to lack of time on the clock) what the best state for the RPi to be in with regard to internet connectivity. Much of my operating will be done somewhere there's a cell signal, and i can use my phone/tablet as an access point - which would get connectivity to the Pi.

I haven't yet but was going to look into how to get location data from the phone rather than the GPS.

Or should i scratch all that and treat the Pi as a disconnected device except when i'm at home?

I could run a piece of ethernet to it but i've been trying to decrease the amount of wiring i've got running around my radio. The way you suggest though Jim would work for what i'm trying to do. I think i can also have the Pi connect to my home wifi and offer up a different SID for me to connect to it - like you do. I'll look into that as well.

I'll also check out 44 net VPN - thanks for that suggestion Bill

Re: RPi / DRAWs Connectivity in the Field and at Home #draws #field #networking #avahi

 

Raspbian runs Avahi services, which means the computer can be discovered automatically using the Zeroconf system (Bonjour, Avahi, etc.)

If your raspberry pi is named DRAWS-CALLSIGN, then you should be able to access it from other machines like this

ssh draws-callsign.local
or
http://draws-callsign.local:8080

as long as the computers are on the same LAN.  Bonjour is built into most Apple products, Avahi/Zeroconf in many Linux/Android systems. If your Windows box doesn't have it, install iTunes.





John D. Hays
Edmonds, WA
K7VE

   


Re: RPi / DRAWs Connectivity in the Field and at Home #draws #field #networking #avahi

 


On Tue, Apr 2, 2019 at 5:52 PM <john.chabalko@...> wrote:


I'll also check out 44 net VPN - thanks for that suggestion Bill
_

Getting GPS from your phone/tablet will be difficult unless they are running gpsd or similar.  You can USB tether or use your phone as a WiFi Hotspot.  Another option is a 4G LTE USB dongle and SIM card for the field -- or a router like in the video discussing 44-net VPN


--


John D. Hays
Edmonds, WA
K7VE

   

Using a PiDrive with Draws Hat #draws #pidrive

okiejim
 

I wanted to use my PiDrive as it is already setup as my access point and dhcp server to my ham shack on wheels. I plugged the hat in and hooked up an external 12 volt source. When I powered it up it gave me a smoke signal. I quickly disconnected power. So I then hooked it up to a pi2 that I have. Using the same 12 volt cable it fired up both the pi and draws hat. But it is not recognizing a sound card. I have ordered a pi3 B+ and will try it on that when it arrives. I hope I did not blow the card. showudrc.sh shows it sees the draws hat.

Re: Using a PiDrive with Draws Hat #draws #pidrive

john.chabalko@...
 

Did you enable audio? Towards the bottom of this page

Also - when you say it gave you a smoke signal... that doesn't sound good. Do you know what burned up, or on which board it came from?

Re: Using a PiDrive with Draws Hat #draws #pidrive

okiejim
 

Thanks for the reply. And yes I did enable by removing the # and re-booting. I believe the prdrive drew to many amps and it may have blown or weaked the 5 volt regulator. But when I power it up from the pi instead of the 12 volt power it seems like its powered since I get a response from the showudrc.sh file. I have contacted NW digital radio and they said its under warranty and to send it in so they can look at it for me. Stellar customer service. I will try on Monday when my new Pi3B+ arrives. If I have the same symptom I will send it in with a copy of showudrc.sh. I just wanted to alert anyone thinking of doing what I did. I wish I would have read more about power on this. I thought it might be too much with the hardrive and usb hub I have hooked up to my existing PI. Powering up from the PI may be the way to go this this type of configuration. I will keep this updated with results.

On Wed, Apr 3, 2019 at 3:35 PM <john.chabalko@...> wrote:
Did you enable audio? Towards the bottom of this page

Also - when you say it gave you a smoke signal... that doesn't sound good. Do you know what burned up, or on which board it came from?

Re: RPi / DRAWs Connectivity in the Field and at Home #draws #field #networking #avahi

Julian OH8STN <julian@...>
 

Its very simple to use your raspberry pi to connect to your home network when you're at home, or to act as an access point in the field. 
Here's the tutorials used. Read all the comments before you begin the tutorial. https://thepi.io/how-to-use-your-raspberry-pi-as-a-wireless-access-point/#comment-6316

This picture was from my outing today. I was operating the Raspberry Pi as an access point. I connected to my Raspberry Pi with my Android tablet over VNC. 

Hope this helps
73
Julian 


Julian OH8STN
www.oh8stn.org
www.youtube.com/c/OH8STN

On 3 Apr 2019 04:01, John D Hays - K7VE <john@...> wrote:

On Tue, Apr 2, 2019 at 5:52 PM <john.chabalko@...> wrote:


I'll also check out 44 net VPN - thanks for that suggestion Bill
_

Getting GPS from your phone/tablet will be difficult unless they are running gpsd or similar.  You can USB tether or use your phone as a WiFi Hotspot.  Another option is a 4G LTE USB dongle and SIM card for the field -- or a router like in the video discussing 44-net VPN


--


John D. Hays
Edmonds, WA
K7VE

   


Re: Using a PiDrive with Draws Hat #draws #pidrive

john.chabalko@...
 

Yikes, i just got mine yesterday. I'm new to raspberry pi but not to Linux so have been getting familiar with the rpi centric configs etc. It's a pretty cool setup. I'm interested in hearing what you find out about the power capabilities. 

Re: Using a PiDrive with Draws Hat #draws #pidrive

Basil Gunn
 

John,
It might not be obvious but you want to start with 'Getting
Started' page from the udrc wiki.

https://nw-digital-radio.groups.io/g/udrc/wiki/DRAWS%3A-Getting-Started

/Basil


john.chabalko@... writes:

Yikes, i just got mine yesterday. I'm new to raspberry pi but not to Linux so have been getting familiar with the rpi centric configs etc. It's a pretty cool setup. I'm interested in hearing what you find out about the power capabilities.

Re: Using a PiDrive with Draws Hat #draws #pidrive

Gwen Patton
 

Dang, and I wanted to use MY PiDrive with it. I'll hold off on experimenting with it until there's more info!

Gwen, NG3P

On Wed, Apr 3, 2019 at 6:35 PM Basil Gunn <basil@...> wrote:

John,
It might not be obvious but you want to start with 'Getting
Started' page from the udrc wiki.

https://nw-digital-radio.groups.io/g/udrc/wiki/DRAWS%3A-Getting-Started

/Basil


john.chabalko@... writes:

> Yikes, i just got mine yesterday. I'm new to raspberry pi but not to Linux so have been getting familiar with the rpi centric configs etc. It's a pretty cool setup. I'm interested in hearing what you find out about the power capabilities.
>
>






--

-+-+-+-+-
Jenny Everywhere's Infinite: Quark Time
http://quarktime.net

Re: Using a PiDrive with Draws Hat #draws #pidrive

john.chabalko@...
 

I followed that doc last night actually and it was super helpful. I’m going to go through the test and validation stuff tonight. 

Im looking forward to getting it all dialed in

I even got js8 working from my house - which I rarely get squat from my house with the noise floor. 

Re: RPi / DRAWs Connectivity in the Field and at Home #draws #field #networking #avahi

john.chabalko@...
 

Thanks Julian, I actually went and watched your video on this last night (again) too. 

I’ll check that link tonight. I’m going to try to take it out away from the house this weekend and make sure I’ve got a workable setup

Draws cooling fans #draws #field

Douglas KI7LIK
 

It is getting warmer, here in phoenix it is already  getting to the mid 80s and will be getting into the 90s next week.

Are there any cooling fans that can be used with the draws hat on a pi?  Even in the house, it seems that the pi and draws gets a little warm.  Most of my applications are field related, emergency related, especially  when related to the desert in which i live.

Re: RPi / DRAWs Connectivity in the Field and at Home #draws #field #networking #avahi

Douglas KI7LIK
 

Could someone email me and see what i'm doing wrong?  I can't seem to get the hotspot to work on my pi, with or without the draws hat.  I used the instructions that julian linked to.

--
Granada Estates Neighborhood Watch

Re: RPi / DRAWs Connectivity in the Field and at Home #draws #field #networking #avahi

Jay L.
 

Try this one from KM4ACK.  https://youtu.be/QZtAOLcY5dY


On Wed, Apr 3, 2019, 20:51 Douglas KI7LIK <KI7LIK.AZ@...> wrote:
Could someone email me and see what i'm doing wrong?  I can't seem to get the hotspot to work on my pi, with or without the draws hat.  I used the instructions that julian linked to.

--
Granada Estates Neighborhood Watch

Re: RPi / DRAWs Connectivity in the Field and at Home #draws #field #networking #avahi

john.chabalko@...
 

I'd be happy to help you troubleshoot Douglas. For this sort of thing whether you have the DRAWs hat or not won't matter, this is simply a rpi/linux networking configuration.

Do you have access to your rpi on a monitor and are you able to troubleshoot the networking configuration?

Re: Using a PiDrive with Draws HatUsing a PiDrive with Draws Hat

okiejim
 

I'm not an expert but I believe it will work on the PiDrive as long as you use the PiDrive power instead of the 12 volt supply. My new Pi3B+ should be in by this weekend. I will try my draws on it and see if I still has troubles. As far as my PiDrve it is working just fine. So the draws hat is what may have been what was damaged. If you can wait awhile I will update with further details.

On Wed, Apr 3, 2019 at 1:21 PM okiejim via Groups.Io <kd6vpe=gmail.com@groups.io> wrote:
I wanted to use my PiDrive as it is already setup as my access point and dhcp server to my ham shack on wheels. I plugged the hat in and hooked up an external 12 volt source. When I powered it up it gave me a smoke signal. I quickly disconnected power. So I then hooked it up to a pi2 that I have. Using the same 12 volt cable it fired up both the pi and draws hat. But it is not recognizing a sound card. I have ordered a pi3 B+ and will try it on that when it arrives. I hope I did not blow the card. showudrc.sh shows it sees the draws hat.

ThumbDV - AMBEServer #thumbdv

andyw999@...
 

Hi

I have a ThumbDV running at 460K.

It runs fine with AMBEServer in half duplex mode sending either SPEECH packet or CHANNEL packet.

I am sending companded 160 byte audio packets and get back the AMBE packet OK and this runs at 50 packets per second as expected.

 

If I then loop the AMBE packets back I only see ~34 packets per second being looped back and if I stop sending packets it keeps going for quite a while as they have been buffered.

 

It also will do an internal hard reset when it gets really upset -

 

Received Serial data packet with type 0 and length 1:

0000:  61 00 01 00 39

 

I know the chip is supposed to do full duplex but has anybody tried it successfully?

As at this point I do not know if it is a limitation of the AMBE chip in packet mode or something stupid I am doing!

Thanks

Andy.