FatalXception
Posts: 32
Joined: Fri Sep 25, 2015 10:55 pm

LED's for PiZero?

Tue Dec 08, 2015 7:13 pm

I'm planning a project that will require up to 8 LED's. All the LED's will have the same color and brightness, but I want the ability to change either. I initially thought Neopixels would be a good product to use, but the project is for a PiZero, and there seem to be a lot red and yellow flags when I read about Neopixels and Raspberries. The LED's will not be evenly spaced, so I cannot just use an 8-LED strip- I would need to group in pairs. I'd appreciate any advice on this. There are simpler ways of solving the need this project fixes (car dashboard illumination), but I chose it because I wanted a Pi Zero project. Please advise with component suggestions- I appreciate it!

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mikronauts
Posts: 2783
Joined: Sat Jan 05, 2013 7:28 pm
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Re: LED's for PiZero?

Tue Dec 08, 2015 7:27 pm

Get two of the Adafruit "servo driver" boards.

They use an LED driver chip.

Two boards = 32 outputs

That will drive 10x RGB LED's, and have two outputs left over for single color LED's.
FatalXception wrote:I'm planning a project that will require up to 8 LED's. All the LED's will have the same color and brightness, but I want the ability to change either. I initially thought Neopixels would be a good product to use, but the project is for a PiZero, and there seem to be a lot red and yellow flags when I read about Neopixels and Raspberries. The LED's will not be evenly spaced, so I cannot just use an 8-LED strip- I would need to group in pairs. I'd appreciate any advice on this. There are simpler ways of solving the need this project fixes (car dashboard illumination), but I chose it because I wanted a Pi Zero project. Please advise with component suggestions- I appreciate it!
http://Mikronauts.com - home of EZasPi, RoboPi, Pi Rtc Dio and Pi Jumper @Mikronauts on Twitter
Advanced Robotics, I/O expansion and prototyping boards for the Raspberry Pi

FatalXception
Posts: 32
Joined: Fri Sep 25, 2015 10:55 pm

Re: LED's for PiZero?

Tue Dec 08, 2015 8:15 pm

Thanks for the advice! So if I did go with Neopixels, this would drive them, right? I really like how the Adafruit page includes relevant links for those of us who are 'less-experienced'. If I read this right, the one 16-channel board will allow control of 16 PWM LED's, right?

Thanks again!

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mikronauts
Posts: 2783
Joined: Sat Jan 05, 2013 7:28 pm
Contact: Website

Re: LED's for PiZero?

Tue Dec 08, 2015 9:10 pm

You are welcome.

No, it would not drive NeoPixels.

It would drive the much cheaper four pin RGB LED's (common, r,g,b)
FatalXception wrote:Thanks for the advice! So if I did go with Neopixels, this would drive them, right? I really like how the Adafruit page includes relevant links for those of us who are 'less-experienced'. If I read this right, the one 16-channel board will allow control of 16 PWM LED's, right?

Thanks again!
http://Mikronauts.com - home of EZasPi, RoboPi, Pi Rtc Dio and Pi Jumper @Mikronauts on Twitter
Advanced Robotics, I/O expansion and prototyping boards for the Raspberry Pi

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