DAPNET DokuWiki

Diese Seite ist nicht editierbar. Sie können den Quelltext sehen, jedoch nicht verändern. Kontaktieren Sie den Administrator, wenn Sie glauben, dass hier ein Fehler vorliegt.
It might be interesting to get also weather data from the own repeater QTH (parallel to the great [[usecaseweather|APRS-WX]] rubric 1080). This page describes the periodically sending of a temperature file to DAPNET, generated with a raspberry pi and a temper1f sensor.

Please take this proposal as blueprint for own purposes, therefor the process is kept simple without any if-loops and so on. Useless use of cat intended ;-)

Be aware, that you have to change user and paths to your own system, also root privileges are necessary.

====== Preparations ======


First you have to install pi-star-dapnetapi on your raspberry: https://github.com/AndyTaylorTweet/Pi-Star_Binaries_sbin/blob/master/pistar-dapnetapi

Short summary: Copy the script text from the homepage to a local file **pistar-dapnetapi.sh** and change the permissions with  **chmod +x pistar-dapnetapi.sh** to executable.

Then create a file **/etc/dapnetapi.key** and add the following content:

<code>
[DAPNETAPI] 
USER=oe7bsh 
PASS=irgendwasgeheimesvonhampagerde
TRXAREA=oe-all
</code>

Note: Use you hampager.de-credentials for **User** and **Pass** and choose a small fitting **TXAREA ** (https://hampager.de/dokuwiki/doku.php?id=transmittergroupgeneral).

For sending messages to the DAPNET we use an additional script from https://einstein.amsterdam/?page_id=2136: Copy the text for **msg-pipe.sh** into a local file **msg-pipe.sh** and change the permissions with  **chmod +x msg-pipe.sh** to executable again.

You have to change the placeholder „**yourcall**“ to your call sign (messages will be sent to this account).

====== Hardware ======


We use as sensor a Temper1F, which is attached via USB.

The device is recognized as TEMPer1F_V1.3:
<code>
sysop@oe7xxrpi2 ~ $ dmesg
[    2.022900] usb 1-1.2: new low-speed USB device number 4 using dwc_otg
[    2.145985] usb 1-1.2: New USB device found, idVendor=0c45, idProduct=7401
[    2.148555] usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[    2.153940] usb 1-1.2: Product: TEMPer1F_V1.3
[    2.156229] usb 1-1.2: Manufacturer: RDing
</code>

We need some packages for the reading of the TEMPer1F_V1.3:

<code>
apt-get install libusb-dev
git clone https://github.com/petervojtek/usb-thermometer.git
cd usb-thermometer/
cp 99-tempsensor.rules /etc/udev/rules.d/
make
cp pcsensor /usr/local/bin/
</code>

Now we can read the sensor with „**pcsensor**“:

<code>
sysop@oe7xxrpi2 ~ $ pcsensor
2018/11/03 11:43:16 Temperature 48.20F 9.00C
</code>

====== Scripting ====== 


We can now use pcsensor to create a file with the temperature data (we use **temprofan.sh**, again **chmod** **+x temprofan.sh** afterwards).

<code>
#!/bin/bash
cd /home/sysop/dapnet/
 #delete old data
rm smsrofan.txt
rm smsrofan2.txt
#fetch new data
echo „Temp Rofan“ >> /home/sysop/smsrofan.txt
/home/sysop/usb-thermometer/pcsensor -cm | head -n1 >> /home/sysop/smsrofan.txt
cat smsrofan.txt | xargs >> smsrofan2.txt
#transfer to the dapnet-api
cat /home/sysop/dapnet/smsrofan2.txt | /home/sysop/dapnet/msg-pipe.sh
</code>

We can now execute the script with **./temprofan.sh** and our pager should get the message:

{{ :usecase:temprofan.jpg?400 |}}

Finally we schedule the data TX to our pager (with **crontab –e**).

Three cron examples:<code>
every day at 7:05: 5 7 * * * /home/sysop/dapnet/temprofan.sh
at 5 past between 7 and 20: 5 7-20 * * * /home/sysop/dapnet/temprofan.sh
at 5 past at 7, 12 und 20: 5 7,12,20 * * * /home/sysop/dapnet/temprofan.sh
</code>
(Note: The last line should be enough, three weather infos each day).
DAPNET DokuWiki

Benutzer-Werkzeuge

Webseiten-Werkzeuge

Seiten-Werkzeuge
