links

the arduino website

https://www.arduino.cc/

the raspberry pi website

https://www.raspberrypi.com/

pure data website

https://puredata.info/

matthew’s raspberry pi and pure data resource

About

how to get a totaly solar powered raspberry pi up and going

paul streach

use directly in audacity, which is free

https://www.audacityteam.org/download/

or download here for free

https://hypermammut.sourceforge.net/paulstretch/

https://sonosaurus.com/paulxstretch/

software defined radio stations

http://websdr2.sdrutah.org:8902/index1a.html?tune=14075usb?zoom=1