The piece of software is a progressive web app(PWA) cannot work properly due to the following:

1) The Browser: Must be Chrome

The software only works properly in a Chrome browser. Please open EC4 Basic - in Chrome.

2) Enable Chrome to access the serial port

In Chrome, a setting that allows the program to read the serial port must be enabled.

  1. Copy and past the following into the address bar of a new tab.


  2. Enable Experimental Web Platform features and restart the browser