RGBW on an Attiny10 with a push button?

Other Hardware General Electronics
1

Hello, I have a bunch of attiny10. I was thinking of doing a RGBW Led project. I have a 5050 Led with Red, Green and blue. But it also has a White in it. The problem I have is that the attiny10 only has 4 pins that is useable or really 3 pins plus a reset pin that can be used as another GPIO pin and I need 5 pins all together because I need a push button to be added to select through the different colors. I'm not sure how to make this work on limited amount of pins. I need the community help to figure this out.

The RGBW led is not a Neopixel one, I wish it was. I have very limited room and can not put something to expand the pins. Not sure what to really do in putting a button on a led pin is it possible? Can someone please help me to figure this out? without the push button I will not beable to turn off the leds or change the selection of colors.

Joseph

2

choose the other controller

3

I'm sorry I phrase that wrong, I have changed it. This is currently the only micro processors I have available. I guess I'm working on my own flash light. Being only at 1k programming sketch and limited pins got me stuck a stumped.

4

If the pushbutton interrupts power to the ATTiny and it changes color at each power up?

EDIT: how do you want to drive the LEDs? Using transistors, or directly from I/O?

5

You can usually read a button on the same pin you using for PWM output to an led, by reading it during the off time

6

I'm trying to get the leds to run as low power as I can and still be bright enough. The only problem I would have with a transistor is taking up to much current on the battery. The battery is only 150ma.

7

Hey West I did not know that. So I can have the Led on and a push button on the same pin. That is great. Not sure how I would wire that up or code it. i'm guessing something like this for the wiring But not sure on the code part?

71QLt

But with different Resistors Values.

8

What about Charlieplexing 4 LEDs Using 3 pins + 1 free pin for button?

9

Hello the problem is Charlieplexing is that all of the Led's are tied together using common anode. it's in a single chip 5050.

10

Which actual LED do you have?
I was going to mention that charlieplexing wasn't possible because of the common anode, but a lot of the actual RGBW LEDs I looked up actually had separate connections for each side of each LED...