Alberto Maccioni

Any LED is a bipole with a certain IV curve, like this: As you can see it keeps a significant forward voltage even at 1.5mA.

What tells you that the current is 20mA? I=(V-Vled)/R=(5-1.8)/2.2k=1.45mA

OP and OPGUI are written in C. You can find the sources in the links from the website.

In order to add a language you first have to generate the language file by running opgui -langfile Then you modify it adding sections starting with a language code within [] Finally you select the new language via -lang option or automatically if the code matches the one given by the OS

V 0.12.2 December 2023:

Version 0.12.2 of OPGUI was released today. Changes: fixed config write on 16F18456; added support for all-in-one board

Hello, can you give some more details? -Procedure -Messages -What you write -What you expect -Write Log

No, serial support would need a different USB class, and a totally different firmware. Besides, serial adapters are already implemented in extremely inexpensive boards, any development in that direction would be a waste of time.