Return-Path: X-Spam-DCC: paranoid 1290; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_50_60,HTML_MESSAGE,NORMAL_HTTP_TO_IP autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id t3C9cEJa017459 for ; Sun, 12 Apr 2015 11:38:14 +0200 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1YhEI1-0003rV-AE for rs_out_1@blacksheep.org; Sun, 12 Apr 2015 10:34:53 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1YhEI0-0003rM-JJ for rsgb_lf_group@blacksheep.org; Sun, 12 Apr 2015 10:34:52 +0100 Received: from know-smtprelay-omc-11.server.virginmedia.net ([80.0.253.75]) by relay1.thorcom.net with esmtp (Exim 4.85) (envelope-from ) id 1YhEHx-0006Av-Fa for rsgb_lf_group@blacksheep.org; Sun, 12 Apr 2015 10:34:51 +0100 Received: from jimstudio17 ([81.157.5.160]) by know-smtprelay-11-imp with bizsmtp id Exam1q00Y3T9GFD01xam8M; Sun, 12 Apr 2015 10:34:47 +0100 X-Originating-IP: [81.157.5.160] X-Spam: 0 X-Authority: v=2.0 cv=J/vyd3bS c=1 sm=1 a=uBsqINUVYWr9c/uErjTKlA==:17 a=8RloEfZUAAAA:8 a=F3M5lZpKAAAA:8 a=gjHbtiOjAAAA:8 a=OgGP0Dt4AAAA:8 a=P6gec8EVAAAA:8 a=1zbH5hMEAKNxsjHlxT8A:9 a=CjuIK1q_8ugA:10 a=FAeiqhcrK-IA:10 a=zvDh25GqfccA:10 a=APFu1ZYXCIsA:10 a=qiWi7Edwir4A:10 a=NWVoK91CQyQA:10 a=d6Ksz7rEi6UA:10 a=SSmOFEACAAAA:8 a=gKO2Hq4RSVkA:10 a=UiCQ7L4-1S4A:10 a=hTZeC7Yk6K0A:10 a=frz4AuCg-hUA:10 a=qdcerlfCBhnTWgR9:21 a=uBsqINUVYWr9c/uErjTKlA==:117 From: "James Cowburn" To: In-Reply-To: <55296791.9070109@gmail.com> Date: Sun, 12 Apr 2015 10:34:46 +0100 MIME-Version: 1.0 X-Mailer: Microsoft Office Outlook, Build 11.0.5510 Thread-Index: AdB0hXxhfdbBLk9VTTy2jNOv2ekfvgAfia1g X-MimeOLE: Produced By Microsoft MimeOLE V6.1.7600.16807 X-Scan-Signature: 42c66d61d2e01d9ed2e5564c0ef1cca6 Message-Id: Subject: RE: LF: OT, Remote site, garden progress Content-Type: multipart/alternative; boundary="----=_NextPart_000_0613_01D0750C.4C35DC80" X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-Scanned-By: MIMEDefang 2.56 on 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 2949 This is a multi-part message in MIME format. ------=_NextPart_000_0613_01D0750C.4C35DC80 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Hi Stefan Very interesting! I have been thinking of some uses to put some old 2.4GHz routers to. I now have some ideas!! I need to get my new Rasp Pi2 up and running too (courtesy my XYL!) Cheers Jim G7NKS _____ From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of DK7FC Sent: 11 April 2015 19:27 To: rsgb_lf_group@blacksheep.org Subject: Re: LF: OT, Remote site, garden progress Hi all, Today it is the first day that my remote receiver is running while hanging 15m AGL into a tree in my garden outside the city. It is streaming audio from a MF/630m receiver via WLAN over 2.4 km distance to my home location!! :-) Since 16:30 UTC, the link is running :-) It is a large step in this project but not the last. So far, no antenna is connected to the RX, i still have to lay the cable up into the tree :-) I am checking the stability/availability of the GHz link and the watchdog scripts, hopefully keeping the link to the remote end. There is a website (not up to date) giving more explanations: http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_remote_Grabber_info.html If all runs well i will be back tomorrow to connect the antenna to stream first MF signals from the garden :-) It is not only a RF remote link project. Additionally it became a project for solar energy systems, i am monitoring the solar battery system voltage to do some energy management. I'm now getting good impressions and a better understanding what energy input can be expected from a cloudy day (10%, 50%, 100% cloudy) relative to a sunny day, or the difference between February and April! A circuit protects batteries from deep-discharges by swicthing the power supply of the Raspberry Pi OFF but before that, it gives a HIGH level on a GPIO pin of the Raspi. A script is running on the Raspi which correctly shuts it down if the input becomes HIGH for > 3 s. This happens at <= 11.2V. But the best is that at 12.8V, the hysteresis of the circuit switches the supply voltage ON again, which automatically starts the Raspi again! So, in a longer period of cloudy days, the energy of the batteries may be insufficient. But this should neither cause unwanted crashes of the system nor deep-discharge the batteries, it just affects the availability of the system, which can be improved then. This circuit consumes < 50 uA. The 12V supply voltage is measured by a LTC2400. Each 30 seconds a measurement is done. 2 averages of a measurement is saved into a text file (each minute) which is automatically syncronized by btsync software over the WLAN link. So finally the text file is available on a local PC here which runs LabView software which generates a voltage-over-daytime plot, automatically generates a png image which is saved to the webserver which is running this website: http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_remote_Grabber.html This is fascinating stuff for me. And i can now optimise my solar system parameters. Do i need to install more solar peak-power or do i need more batteries, or both? These questions can be answered fairly easily now by studying the plots. The overall power consumption of the system is 3W. It is now running on 2x 7 Ah 12V lead acid batteries. One of them is 7 years old ;-) I'm hoping for a stable link and seeing the voltage rising again tomorrow morning :-) Another funny feature is: I can remotely switch a bistable relay (energy saving) which switches the input of the USB soundcard. One input is the RX, the other one is a microphone which is installed into a feed-through of the waterproof box. So i can decide to listen to MF or to the birds singing in the morning, or to wild pigs at night, destroying the lawn! SpecLab and it's triggered event function could be used to detect and record sudden nightly audio events :-) It is even possible to send a SMS if this happens so i can listen to the web-radio steam on my smartphone out of the bed :-) Crazy world! Two up to date images https://dl.dropboxusercontent.com/u/19882028/MF/20150411_181847.jpg https://dl.dropboxusercontent.com/u/19882028/MF/20150411_184112.jpg To be continued... 73, Stefan Am 14.10.2014 15:28, schrieb DK7FC: Hi LF, I continued with my garden remote VLF/LF/MF RX site. It is amazing what the Raspberry PI can do! :-) I'm not an expert at all (!) but i managed, of course with help from the web, to start and run an Icecast2 server on the RPi. It is now laying on a table here, consuming about 2W while streaming into the web. In a first step i played music (web radio), an mp3 stream. Now i managed to change the output format to ogg and run a 300 MB wav file from the RPi. You can listen and display the stuff in SpecLab, see https://dl.dropboxusercontent.com/u/19882028/VLF/SL%20audio.png You can open this box in SL and type the url of the stream, which is http://129.206.29.99:8000/mpd Now it is just a file but later it should become the input of a soundcard or another ADC. Hope this works. Does this work on your side as well? 73, Stefan PS: On http://129.206.29.99:8000/ there is a site showing some description and usage of the stream. All very new to me and 24 hours ago i knew nothing about that... ------=_NextPart_000_0613_01D0750C.4C35DC80 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

Hi = Stefan

 

Very interesting!  I have been = thinking of some uses to put some old 2.4GHz routers to.  I now have some = ideas!! I need to get my new Rasp Pi2 up and running too (courtesy my = XYL!)

 

Cheers

 

Jim = G7NKS

 

 

 

From: owner-rsgb_lf_group@blacksheep.org [mailto:owner-rsgb_lf_group@blacksheep.org] On Behalf Of DK7FC
Sent: 11 April 2015 = 19:27
To: rsgb_lf_group@blacksheep.org
Subject: Re: LF: OT, = Remote site, garden progress

 

Hi all,

Today it is the first day that my remote receiver is running while = hanging 15m AGL into a tree in my garden outside the city. It is streaming audio = from a MF/630m receiver via WLAN over 2.4 km distance to my home location!! = :-)
Since 16:30 UTC, the link is running :-)

It is a large step in this project but not the last. So far, no antenna = is connected to the RX, i still have to lay the cable up into the tree :-) = I am checking the stability/availability of the GHz link and the watchdog = scripts, hopefully keeping the link to the remote end.
There is a website (not up to date) giving more explanations: http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_remote_G= rabber_info.html
If all runs well i will be back tomorrow to connect the antenna to = stream first MF signals from the = garden :-)

It is not only a RF remote link = project. Additionally it became a project for = solar energy systems, i am monitoring the solar battery system = voltage to do some energy management. I'm now getting good impressions and a better understanding what energy input can be expected from a cloudy day (10%, = 50%, 100% cloudy) relative to a sunny day, or the difference between February = and April! A circuit protects batteries from deep-discharges by swicthing = the power supply of the Raspberry Pi OFF but before that, it gives a HIGH level on = a GPIO pin of the Raspi. A script is running on the Raspi which correctly shuts = it down if the input becomes HIGH for > 3 s. This happens at <=3D = 11.2V. But the best is that at 12.8V, the hysteresis of the circuit switches the = supply voltage ON again, which automatically starts the Raspi again! So, in a = longer period of cloudy days, the energy of the batteries may be insufficient. But = this should neither cause unwanted crashes of the system nor deep-discharge = the batteries, it just affects the availability of the system, which can be improved then. This circuit = consumes < 50 uA.
The 12V supply voltage is measured by a LTC2400. Each 30 seconds a = measurement is done. 2 averages of a measurement is saved into a text file (each = minute) which is automatically syncronized by btsync software over the WLAN = link. So finally the text file is available on a local PC here which runs LabView software which generates a voltage-over-daytime plot, automatically = generates a png image which is saved to the webserver which is running this website: = http://www.iup.uni-heidelberg.de/schaefer_vlf/DK7FC_remote_Grabbe= r.html
This is fascinating stuff for me. And i can now optimise my solar system parameters. Do i need to install more solar peak-power or do i need more batteries, or both? These questions can be answered fairly easily now by studying the plots.

The overall power consumption of the system is 3W. It is now running on = 2x 7 Ah 12V lead acid batteries. One of them is 7 years old ;-) I'm hoping for a = stable link and seeing the voltage rising again tomorrow morning :-)

Another funny feature is: I can remotely switch a bistable relay (energy saving) which switches the input of the USB soundcard. One input is the = RX, the other one is a microphone which is installed into a feed-through of the waterproof box. So i can decide to listen to MF or to the birds singing = in the morning, or to wild pigs at night, destroying the lawn! SpecLab and it's triggered event function could be used to detect and record sudden = nightly audio events :-) It is even possible to send a SMS if this happens so i = can listen to the web-radio steam on my smartphone out of the bed :-) Crazy = world!

Two up to date images
https://dl.dropboxusercontent.com/u/19882028/MF/20150411_181847.jpg
https://dl.dropboxusercontent.com/u/19882028/MF/20150411_184112.jpg

To be continued...

73, Stefan



Am 14.10.2014 15:28, schrieb DK7FC:

Hi LF,

I continued with my garden remote VLF/LF/MF RX site.
It is amazing what the Raspberry PI can do! :-) I'm not an expert at all = (!) but i managed, of course with help from the web, to start and run an = Icecast2 server on the RPi. It is now laying on a table here, consuming about 2W = while streaming into the web.
In a first step i played music (web radio), an mp3 stream. Now i managed = to change the output format to ogg and run a 300 MB wav file from the RPi. = You can listen and display the stuff in SpecLab, see = https://dl.dropboxusercontent.com/u/19882028/VLF/SL%20audio.png You can open this box in SL and type the url of the stream, which is http://129.206.29.99:8000/mpd =

Now it is just a file but later it should become the input of a = soundcard or another ADC. Hope this works.

Does this work on your side as well?

73, Stefan

PS: On http://129.206.29.99:8000/ there is a site showing some description and usage of the stream. All = very new to me and 24 hours ago i knew nothing about that...



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