3 LED BREATHE, FADE, BLINK (PlatformIO)

To make the LED BREATH assignment, I followed some of the instructions of the Jled Library from the GitLab repo, and after trying the different combinations (Candle, Blink, Static, Breath, Fade, etc). The ones I liked most where the ones with multiple leds, so I keept my conection with 3 leds, and used the multiles.ino code and modified it a bit. This one mixes the Breath, Fade and Blink codes in one. It also uses the internal led as a fourth led.

ADDING THE LIBRARY:

Since we are using a library that is not part of the arduino, we need to add jled to our library dependencies in our platformio.ini project file like this:

        [env:nodemcuv2]

        platform = espressif8266

        board = nodemcuv2

        framework = arduino

        lib_deps = jled

This is needed for the líbrary to load when you call it in your CCP code file.

PMW PINS:

Another important thing I realized, is that the breath effect and others, only work in PWM (Pulse Width Modulation) pins, which in case of the NodeMCU are D2, D5, D6 and D8. I have read that through software, you can also convert all the digital pins into PWM, but I´m not sure how to do it yet. This was interesting to me, because I have never understood what that really means untill now, and I also discovered that in the pinnout graphics they usually paint it with an ondulated line. I also dicovered that the UNO has painted lines near the numers in the PWM pins. I´m going to copy the Wikipedia description, just to remind in the future what they are.

        Pulse-width modulation:

        Pulse width modulation, or pulse-duration modulation, is a method of         reducing the average         power delivered by an electrical signal, by         effectively chopping it up into discrete parts. The         average value of         voltage fed to the load is controlled by turning the switch between supply         and load on and off at a fast rate.

This JLED Library was really usefull to do nicer things with less code, I could even do the same I did with the blinks, but with much less code.

INITIAL CODE:     JLED Library

MY CODE:     3 Led Breathe_Blink_Fade.cpp