Planet cUG

Yesterday: After days of rain and bad weather sun again and the gliders are active again.

New peak with a lot of signals and 130 senders until lunch, more than 4 signals each second, receiver with high load, but also a new record with 237 kms ;-)

by Bernd H. Steiner at 2025-08-08 06:26:46 UTC

2025-08-06, Innsbruck
a beautiful & funny movie.

by gregoa at 2025-08-07 00:00:00 UTC

The meshtastic node is now running for one day and the heard-list is getting larger and larger.

And I understand now, why there are nearly any nodes at https://meshmap.net/: You have to activate data send to MQTT manually.

Next step: Try a better antenna, I have here a 5 dBi antenna for 868 MHz, but have to look up the regulations before. More information: https://meshtastic.at/

by Bernd H. Steiner at 2025-08-06 20:34:16 UTC

2025-08-05, Innsbruck
beautiful movie.

by gregoa at 2025-08-06 00:00:00 UTC

Got a HELTEC V3 868 today and flashed it with the meshtastic-firmware (https://meshtastic.org/).

Config via app a little bit tricky as all depends on the set region. Had to search a little bit,m the region (with frequency, power etc.) can be found under the menu LoRa.

Didn't expect anything as there are no nodes at all at https://meshmap.net/ but within some minutes the (small heltec) heard IBK Nord, nice.

by Bernd H. Steiner at 2025-08-05 09:56:57 UTC

2025-08-03, Innsbruck
quite ok.

by gregoa at 2025-08-04 00:00:00 UTC

Das erste mal mit Co-KV eine Klasse übernehmen. Das war sehr spannend; und zwar für uns beide.



In dieser Folge haben wir uns zusammengesetzt und einen Rückblick über unser erstes Jahr gemacht. Es war ein sehr angenehmer Nachmittag und wir freuen uns schon beide auf das kommende Jahr.

Aber horcht selbst!

2025-08-02 00:24:13 UTC

2025-08-01, Innsbruck
well-made, nice, moving documentary.

by gregoa at 2025-08-02 00:00:00 UTC

from "a handy gallery", at 2025-08-01 19:06:24 UTC

by gregoa at 2025-08-01 19:06:24 UTC

from "a handy gallery", at 2025-08-01 18:16:12 UTC

by gregoa at 2025-08-01 18:16:12 UTC

Next step: Added a BMP280-sensor to the t-beam.

Easy installation, as the pins are the same as on the SH1106: VCC-GND-SCL-SCA.

by Bernd H. Steiner at 2025-07-26 12:16:47 UTC

Some tests with Meshtastic, Meshcom. As hardware: Lilygo T-beam TTGO version 1.1.

Had to figure out, that from 1.0 there were changes in the used hardware: PSU AXP192 and SX1276. But the main problem: After flashing a firmware there were GPS errors.

The Lilygo T-beam uses a U-blox GPS N6M for GPS. A module-reset via https://github.com/richonguzman/TTGO_T_BEAM_GPS_RESET did work and the errors disappeared. But: The T-beams were now able to get the time via GPS (therefor one sat is enough) but position data were rarely seen, also after getting a fix, modules stopped gps data again.

Finally I found https://github.com/eriktheV-king/TTGO_T-beam_GPS-reset and the (hard) factory reset seems to work.

Btw: The green T-beam in the middle has the firmware by OE5BPA, nice for fixing, as it shows the amount of received sats.

by Bernd H. Steiner at 2025-07-25 11:19:56 UTC

from "a handy gallery", at 2025-07-21 16:47:00 UTC

by gregoa at 2025-07-21 16:47:00 UTC

kühl feucht früh radl am bahnhof ruetz & rein in den railjet nach zürich. ... [weiter]

2025-07-21 15:30:50 UTC

from "a handy gallery", at 2025-07-20 11:40:19 UTC

by gregoa at 2025-07-20 11:40:19 UTC

Es wurde langsam Zeit. Meine Mutter hatte ein Huawei handy mit Android 8. Letztes Systemupdate 2020. Sie meinte, der Akku ist schon etwas schwach. Also hab ich mich entschlossen, sie kurzerhand upzudaten. Sie hatte schon selber auch den Wunsch, sich ein neues Handy zuzulegen.
Nun ist meine Mutter auf Android 14, hat ein Samsung Galaxy A16 5G und ist etwas verwirrt.
Alles schaut anders aus, alles funktioniert gleich. Das ist nicht ganz so einfach, wie sich das unsereins denkt. Aber das wird schon. Wir haben heute alle Daten / Kontakte / Fotos auf das Neue überspielt und damit muss sie jetzt zurecht kommen. Jedesmal, wenn sich der Bildschirm abschaltet, muss sie den PIN eingeben. Vielleicht stell ich das doch noch auf den Fingerabdruck um?
Immerhin hat es geklappt, auf sms zu antworten, obwohl der Bildschirm gesperrt war und ich NICHT anwesend war, ihr irgendwie zu helfen.

Geheimer Hinweis: Meine Mutter ist 86 Jahre alt. Sie startet WhatsApp und macht Videocalls mit ihrem Urenkerl, sie schickt Emojis in ihren Nachrichten, sie sucht sich Busverbindungen im Internet.
Ich bin da zuversichtlich, dass sie den Umstieg jetzt hinbekommt. :D

by Chrisu at 2025-07-19 01:58:05 UTC

Some years ago I wrote a blog entry about the overload situation for an OGN receiver, when a lot of packets arrive.

This did result in the log in entries like
In the OGN-log I see RF_Acq.Exec() ... Half time slot
and
RF_Acq.Exec() ... Dropped a slot

as the software dropped half of a or whole slots, as only two of the four RPi kernels werde used.

And with the new software 0.3.2? The limitation on two cores seems to be gone, I see loads of 3 or even more:

Please note, that nearly all of the received signals/gliders are within 30 kms. My thesis: Signals from more far away cannot pass, as the overload is "caused" by strong signals, interesting.

we will see what happens when there is less paragliding activity and more glider activity.

by Bernd H. Steiner at 2025-07-18 13:18:12 UTC

from "a handy gallery", at 2025-07-17 20:54:29 UTC

by gregoa at 2025-07-17 20:54:29 UTC

If a whole data site went down, but the peripherial is still reachable (from other site, the wlan data 5GHz links), this is a sign that the core router is "down". Prepared/configured a complete new CRS125 and took it up to the site. Finally: Only the PSU was malfunctioning: "It was the PSU, and not the router."

by Bernd H. Steiner at 2025-07-17 16:01:09 UTC

One task during the maintainance on tuesday was to change the OGN receiver: The old installation had firmware 0.2.6, but since firmware 0.3.2 a new encoding/decoding is used.

Large parts of the installation (antenna, rtl-sdr stick, uputronics preamp/saw filter) stayed, only the RPI with the "software" was changed.

Prepared a RPi 2B in Wattens, tested it, everything went fine. After the installation on the site: Zero coverage. Huch?

The status page of the receiver showed a high error correction in ppm, something between 50 and 180 ppm. Definitely incorrect as up in the mountains I use a rtl-sdr stick with TCXO with 0,5 ppm.

Hm.... two main differences between the test in Wattens and the final site:

1) I used in Wattens another rtl-sdr-stick without TCXO
2) I had in Wattens no preamp/saw filter in the line.

After some research: The new firmware 0.3.2 has no fixed ppm correction as the old firmware (the old ppm was 1, as with TCXO...) but some kind of "dynamic" calculation. And there the problems begin: The dynamic calkulcation works with a signal in the GSM band and .... the now installed saw filter was out of this band. So the calculations were... just wrong.

But how to fix it?
Two lines in the config file solved the problem:
FreqCorr="1" -> sets a fix correctiopn of 1 ppm
GSMCenterFreq=0 -> disables the automatic offset correction

After that changes some signals did show up :-)

by Bernd H. Steiner at 2025-07-17 15:59:51 UTC

Since years I carry an USB stick with me when I maintain a site with Mikrotik data links. Yesterday I did want to add some more software/new firmwares and discovered, that the stick is malfunctioning... lucky, that I never had to use it up to now.

by Bernd H. Steiner at 2025-07-17 15:58:12 UTC

Back from the mountains: Three raspberries:

From left to right:

* RPi 3 with an arduino and LoRa-Shield, was used for LoRa and OGN
* RPi 3 with a LoRa Hat
* RPi 3 with a POCSAG/DAPNET-hat

by Bernd H. Steiner at 2025-07-17 15:55:52 UTC

from "a handy gallery", at 2025-06-28 17:32:55 UTC

by gregoa at 2025-06-28 17:32:55 UTC

from "a handy gallery", at 2025-06-21 20:22:48 UTC

by gregoa at 2025-06-21 20:22:48 UTC

Seit gestern hab ich Dank meines Nachbarn ein Speichermodul mehr als nach Beendigung der PV-Projekts. Jetzt bin ich bei 20,3 kWh Speicherkapazität. Und die Sparerei geht noch weiter: Wir haben schlicht und einfach selber das Werk aus Wechselrichter und Speichermodulen auseinandergenommen und neu angeschlossen. Schon immer mit Rücksprache der ausführenden Firma, aber mit der Ersparnis der Arbeitszeit der Personen. Auch die Garantiefrage wurde geklärt.
Jetzt hab ich 21,3 kWh. Das Einspeisen bei der EEG klappt immer noch nicht, das Beziehen aus der EEG funktioniert schon und spart sehr viel Geld. Die Energiewende funktioniert im Kleinen schon recht gut; wir sind schon 4 in meinem Seepark.

by Chrisu at 2025-06-14 01:06:27 UTC

from "a handy gallery", at 2025-06-13 17:04:38 UTC

by gregoa at 2025-06-13 17:04:38 UTC

from "a handy gallery", at 2025-06-08 16:35:39 UTC

by gregoa at 2025-06-08 16:35:39 UTC

2025-06-07, Innsbruck
fantastic, in serveral senses of the word.

by gregoa at 2025-06-08 00:00:00 UTC

2025-06-07, Innsbruck
nice, interesting combination of found footage and fiction.

by gregoa at 2025-06-08 00:00:00 UTC

2025-06-06, Innsbruck
interesting story, partially a bit exhausting.

by gregoa at 2025-06-07 00:00:00 UTC