Demo of the #PSLab (#GnuLinux/#Android, OpenSource),+ ~65$ #OpenHardware board with:
* #PWMGenerator
* #WaveGenerator
* #oscilloscope
* #multimeter
* #Programmable current source
* etc
https://www.youtube.com/watch?v=CtI3zr6H8SE
Official web site: https://pslab.io