SDR-RTL on RPi4

Setting up SDR-RTL on Raspberry Pi 4 was quite easy.

  1. Installed CubicSDR
  2. Attach SDR-RTL USB device to RPi4
  3. Start with menu at Other>>CubicSDR or from terminal CubicSDR

I had a little trouble with getting the sound thru the speakers. Basically on the CubicSDR, the audio being routed to HDMI verse Analog.

Also note, that I tried running on RPi3 and had mixed results. Sometimes it worked and other times it didn’t. It’s CPU intensive and think the RPi3 just doesnt have enough power.

Kismet running on NetHunter

Kismet can be found running WarDriving up under Nethunter app, however it also needs an external wifi adapter to run well. Attaching a USBadapter dongle, I was able to use the ALFA AWUS036ACS. From a command prompt

airmon-ng

apt-get install firmware-atheros # this not be required

ifconfig wlan1 up

ip link set wlan1 up

airmon-ng start wlan1

airodump-ng wlan1mon

Then started wardriving, open browser and started resource.

First Published Model on Thingiverse

This month I published my first 3D model on Thingiverse. The problem with many of the Inmoov head stands is that they would not hold upright and when testing the movement of head, left and right, the head fell over. The Inmoov head stand has a wide base to prevent this and by inserting the three neck pillars into the cylinders, it was easier to manage.

The model is not fancy by all means, however, it was my first model developed using AudoDesk 360 Fusion. Quite a learning curve for me, to get this far and using the tool is getting easier, however, I warn their are many tools within the software and hope to be good with many of them. Currently using the student edition.

Here is the link to Thingiverse to download STL file Inmoov Head Stand by MyProjectExpert – Thingiverse

PLA Clogged in Extruder

Recently the PLA was clogged in the extruder. It started with clicking sound and rather than fixing it immediately, I thought I would wait. It’s believed it was caused by changing the PLA from HatchBox to eSUN. eSUN used a higher temperature and when it was set to 225 the clicking stopped. Later replaced with HatchBox, but didn’t cold pull to insure that all the PLA was removed. Once HatchBox was loaded, clicking came back and print job went thru the night clicking. In morning, the print job failed and I could not remove PLA. It required, removing Extruder and the PLA plug came out easy. The picture shows a slight swelling at the end.