Hi Everyone, I am creating a puzzle box and have several games where I would like an LED to fade to a different color without slowing down the other functions of the loop much. To give you an idea of the scope I have 6 mA gauges, 6 pots, 6 LEDs. When you move a pot the input is scaled to a PWM si…

[image] scouser1023: Before I get wrapped around the axel what would you suggest? you could introduce a timer based on the example of "BlinkWithoutDelay" and blend from one color to another. blend is a function from the fastled lib. you hand over two colors and a gradiant from 0..255 and th…

It is completely OK to be a newbee. google is always worth a five minute search https://www.google.de/search?q=arduino+fastled+fading+changing+colors best regards Stefan

Thank you! And sorry I did not specify the LED type it’s just a bunch of neopixels. I can work around getting them into the right chip etc. And I did check the link provided above and there was never an agreement on the best way to do this. Also it did not account for a loop function to do other o…

Do you understand the example "BlinkWithoutDelay"? If not, what are you missing exactly? Have you tested the sketch in #5 with your hardware? What line of code is unclear after asking google?

Noiasca I understand blink without delay but this is different. Inherently to get a fade a transition over time is needed. If the condition changes then the transition needs to switch direction from its current location. All the code I have understood so far uses a small loop in the main loop to go…

To do what you describe you need to take advantage of the fact that loop() does what it says, ie it loops Save the value of millis() as the start time of the fade step and set the condition of the LED to the start value. Each time round loop() check whether the current time minus the start time eq…

The technique to do this is using a state-machine that is called repeatedly Each time the function with the state-machine is called it executes one little step of whatever. As the state-machine is controlled by a state-variable and each run of the function does only a small step for example incre…

Noiasca sorry it was you that provided the code. Yes that looks like it will work very well for my application. Let’s me know my searches under the fast led lib are not good. Thanks for looking that up. Also let’s me know that you are really good at this. I am going to have to spend an hour or two …

My pleasure. If you would like to go the next step, just let me know. I've prepared an OOP variant, which makes the code cleaner, but I don't want to post the code as long as you don't feel confident with #5.

Fast.LED lib fade without slowing the loop

Projects Programming

UKHeliBob June 2, 2021, 9:35pm 2

Do you think it might help if you posted your code ?

The easier you make it to read and copy your code the more likely it is that you will get help

Please follow the advice given in the link below when posting code , use code tags and post the code here

Topic		Replies	Views
Change code to add non-blocking delay and control brightness and speed with pot - most work is done Programming	31	348	April 6, 2026
Mehrere LED auf einem Streifen per Fastled ansteuern Deutsch	30	804	November 22, 2024
Fade random red. Please Programming	28	337	January 7, 2025
Fading command not working ? LEDs and Multiplexing	38	4976	May 6, 2021
Create code for a semi random FastLED pattern LEDs and Multiplexing	38	740	March 8, 2025

Fast.LED lib fade without slowing the loop

Related topics