sunnuntai, 5. joulukuu 2021

Some findings in shopping centre

nestcampuuvilla.jpg

smtagpuuvilla.jpg

 

nestcam2.jpg

nestcam1.jpg

rj45socks.jpg

stag3.jpg

stag2.jpg

stag1.jpg

torstai, 25. marraskuu 2021

ELTE6-BT, ALAM

https://www.ensto.com/fi/building-systems/tuotteet/sahkolammitys/sahkolammittimet/lista-lammittimet-korkeus-200mm/elte6-bt/
 

elte5.jpg
https://play.google.com/store/apps/details?id=com.ensto.heatcontrol&hl=us&gl=US

elte4.jpg

elte1.jpg

elte2.jpg

elte3.jpg

 

 

adc723-1.jpg

adc723-2.jpg

adc723-3.jpg

adc723-4.jpg

lauantai, 13. marraskuu 2021

Remote controls in 868 MHz ISM band with static keycodes

ADALM-PLUTO
GNU Radio
PulseView
RTL_433

Old tech remote door openers which use PWM and static key codes can still be found from 868 MHz ISM band.

gnu-plutosrc.jpg

gnu-timedomain.jpg

rtl-433.jpg

pulseviewwav.jpg

Signal replay settings in SmartRF Studio. For more proper timing control for tx one can export register values for use in e.g. Arduino + CC120

smartrfspic.jpg
https://i.ibb.co/9nPnLj7/smartrfspic.png

grview.jpg
https://i.ibb.co/rctLWbs/grview.png

firfilter.jpg

maanantai, 8. marraskuu 2021

Replay SDR# baseband recording with ADALM-PLUTO

Oracle VM VirtualBox
Ubuntu 18.04
GNU Radio 3.7
SDR#
ADALM-PLUTO

SDR# baseband recording, sample rate 1.024 MSPS, format 32 bit IEEE float.

gnur.jpg
https://i.ibb.co/Ld0g6ZD/gnur.png

sdrscr.jpg
DC spike ... GNU Radio DC blocker does not fix it. Gr-correctiq block?

torstai, 4. marraskuu 2021

Signal RX-TX with ADALM-PLUTO and GNU Radio

Oracle VM VirtualBox
Ubuntu 18.04
GNU Radio 3.7
ADALM-PLUTO
https://wiki.analog.com/resources/tools-software/linux-software/gnuradio

RX and save signal (433 MHz wireless doorbell)
vbox-pluto-src.jpg
https://i.ibb.co/p3bT2Sj/vbox-pluto-src.png

View recorded signal in GNU Radio
vbox-qt-fft.jpg
https://i.ibb.co/sCZ7zMH/vbox-qt-fft.png

pluto-fft.jpg

TX signal
vbox-pluto-tx.jpg
https://i.ibb.co/jvX1Nx4/vbox-pluto-tx.png

pluto-sink-nok.jpg
Error when using variables in sample rate and RF bandwidth properties.
OK when using
pluto-sink-ok.jpg


sdr-signal.jpg
https://i.ibb.co/FbL2SH1/sdr-signal.png