It's been a really fun break!
I'm getting interested in super low frequency signals so I looked up the E202 Very Low Frequency (I think it would be awesome to go find a pipeline to use as an antenna...
Next project is to take my BlueROV[3] and build a hydrophone array[4] for it so a friend and I can see if a underwater acoustics engineer friend and I can use it to track other objects (like a remote-controlled toy boat) in the water. I've been doing some Kivy visualization of an accelerometer and gyro (MPU9255) and I think we could use matplotlib's interactive mode or something in Kivy (maybe) to visualize it all in realtime.
There's nothing cutting edge here but I've done a bunch of radio frequency (RF) stuff like GPS and WiFi and I'm really enjoying how tangible audio seems in comparison. Just having fun with low frequencies, basically.
[1] http://www.vlf.it/romero2/explorer-e202.html
[2] https://github.com/wicker/e202var-natural-radio-receiver
[3] https://www.bluerobotics.com/store/rov/bluerov-r1/
[4] http://www.dosits.org/files/dosits/hydrophone_instruc_w_imag...