[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Next Berkeley Pi meeting this Sunday March 21st 2021



Pi.BerkeleyLUG:  

Still available: couple Pi Zero w and Pi Pico microcontroller.  
Let me know if you are interested.  I can deliver same day to Berk/Oakland area.  
Farther out may take me longer.  

OK so last Berkeley meeting I played around with rtl-sdr.  Which is a USB 
Software Defined Radio.  I tuned it to the ADS-B signals that airplanes use to 
broadcast their positions.  It picked up many many planes before I stopped it.  
There is a plane tracking website called flightaware.com and they sell a branded 
rtl-sdr dongle and also offer a custom OS for the Pi called PiAware (and they are 
happy to have any data you share -- I think they in turn share data with you too.) 

I just grabbed this now:  

8da7da54990c6220b0f4015d657c;
CRC: 000000
RSSI: -18.4 dBFS
Score: 1800
Time: 8149485.75us
DF:17 AA:A7DA54 CA:5 ME:990C6220B0F401
 Extended Squitter Airborne velocity over ground, subsonic (19/1)
  ICAO Address:  A7DA54 (Mode S / ADS-B)
  Air/Ground:    airborne
  GNSS delta:    0 ft
  Heading:       341
  Speed:         277 kt groundspeed
  Vertical rate: 3840 ft/min GNSS

*8da7da54582b8135d80c0f5c1b88;
CRC: 000000
RSSI: -18.2 dBFS
Score: 1800
Time: 8219187.42us
DF:17 AA:A7DA54 CA:5 ME:582B8135D80C0F
 Extended Squitter Airborne position (barometric altitude) (11)
  ICAO Address:  A7DA54 (Mode S / ADS-B)
  Air/Ground:    airborne
  Altitude:      7600 ft barometric
  CPR type:      Airborne
  CPR odd flag:  even
  CPR NUCp/NIC:  7
  CPR latitude:  37.81549 (39660)
  CPR longitude: -122.37279 (3087)
  CPR decoding:  global

I looked up the ID (A7DA54) and that happens to be a FedEX plane 
tail number 
N605FE
McDonnell Douglas MD-11F
 Federal Express (FedEx)
Sep 1992

And there was another packet that had the flight number FDX195 which turns out to be OAK to ANC Anchorage Alaska 

I think that is interesting but my aim was to grab data from some wireless temperature sensors.  
There is a program in Linux rtl_433 and it picks up my 433Mhz sensor pretty well.  But I 
have some 915 Mhz  LaCrosse sensors that aren't supported yet.  It can grab the raw data: 

time      : 2021-03-16 21:31:01
model     : name         count     : 1             num_rows  : 1
rows      :
len       : 387          data      : 555555555555555a5545ba866b12a1c46406a6ba5a5a5a5a4000000000000000000000000000000000000000000000002
codes     : {387}555555555555555a5545ba866b12a1c46406a6ba5a5a5a5a4000000000000000000000000000000000000000000000002
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
time      : 2021-03-16 21:31:51
model     : name         count     : 1             num_rows  : 1
rows      :
len       : 386          data      : 555555555555555a5545ba866b12a0046406a41a5a5a5a5a4000000000000000000000000000000000000000000000000
codes     : {386}555555555555555a5545ba866b12a0046406a41a5a5a5a5a4000000000000000000000000000000000000000000000000

These get repeated every minute.  They are almost the same. Just 10 characters in the middle change.  So I am thinking there must be a sensor id then temp and humidity, some empty fields for like windspeed which the sensors don't measure and finally a checksum.  

It also picked up this:  
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
time      : 2021-03-16 21:31:51
model     : ESIC-EMT7110 Sensor ID : 33589500
Power     : 4496.0 W     Current   : 13.600 A      Voltage   : 233.0 V
Energy    : 48.18 kWh    Pairing?  : 0             Connected?: 0
Integrity : CHECKSUM

Weird because that is a european device. Seems like it was sold in Sweden.  US has 110V AC 
and I don't see how I'd have picked that up.  

Well enough of that ... here are the meeting details: 

tom is inviting you to a meeting.

Join the meeting:
https://meet.jit.si/Pi.BerkeleyLUG

To join by phone instead, tap this: +1.512.647.1431,,3314091209#

Looking for a different dial-in number?
See meeting dial-in numbers: https://meet.jit.si/static/dialInInfo.html?room=Pi.BerkeleyLUG


If also dialing-in through a room phone, join without connecting to audio: https://meet.jit.si/Pi.BerkeleyLUG#config.startSilent=true

Thomas

--
You received this message because you are subscribed to the Google Groups "BerkeleyLUG" group.
To unsubscribe from this group and stop receiving emails from it, send an email to berkeleylug+unsubscribe@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/berkeleylug/CAGpvfspBo6MF3wdeum6u-QSM9bD4GQD-fvYc14O0kRqUNote5w%40mail.gmail.com.