Recent surveys tell us that people prefer looking at videos over reading. Thus, I decided today to keep up with these times and I produced a video, showing you a polyphonic (thanks to multi-touch) MIDI keyboard on a Nextion NX1060P101, connected to the new Nextion MIDI I/O adapter which will come to market very soon.

Everything started in a Nextion-related group on Facebook where a young man who is into motor tuning - let's call him "M." - asked for advice: "Hey! I'm building a gauge with the "line" command. Now I'm searching a way, to find all correct X and Y of the outside circle. How can I do that ? I Just need every 3° so i have 120 X and 120 Y numbers. I also looked into the Sunday projects of Thierry Frenkel but I can't get any way to understand, how to get this coords of a circle by itself an put it into a val.txt and read it with spstr. Maybe Thierry can help me with this ? ..."

Sometimes, showing some information, a warning, or an error message is required in a HMI project. And many paths lead to Rome. What I'll show here today is a kind of custom component or object which can be customized and called from different contexts, similar to the screen keyboards which can be easily added to text and numeric input fields in the editor.

Protocols and parsing - Part 5 Bit streams and block graphics Recently, I read in a Nextion related internet forum the question of someone who asked for a solution where "an array of bits" would be sent to the Nextion HMI and the latter would then switch the corresponding pixel(s)

The Nextion MIDI I/O interface The first video Today, instead of writing an article, I created a video. I received the first prototypes of the Nextion MIDI I/O interface to do thorough and exhaustive beta-testing. So, I created a hmi project with 3 pages, a settings page, one with a

Over the last weeks, we learned about the Nextion active protocol parse mode in general, about the MIDI protocol in Detail, and we got a first and simple demo project which taught us how the Nextion HMI could send MIDI messages or commands in standalone mode. Today, things become a little more complex: We want to receive and to decode MIDI messages and commands. For this demo project, we'll implement two functionalities: Soft-through, which means that received, decoded and validated commands are then re-sent, and a MIDI monitor which should show us the MIDI data stream in a human readable form. Afterwards, it might be up to you to to add other functions like GPIO triggers or visual effects, or even filtering, transforming, and re-sending the midi data for additional effects like transposition or adding sub-harmonics (octavider), based on this framework.