Web oscilloscope software. By dbuezas. Free on GitHub: https://github.com/dbuezas/arduino-web-oscilloscope
https://s3-us-west-1.amazonaws.com/h...cilloscope.jpg
More:
https://github.com/dbuezas/arduino-web-oscilloscope
https://dbuezas.github.io/arduino-web-oscilloscope/