Goggles project - Wiring/Power Considerations

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zambam
 
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Joined: Sun Apr 15, 2018 4:51 pm

Goggles project - Wiring/Power Considerations

Post by zambam »

I'm working on a project and before I begin to soldering things together (beginner), I thought I'd ask here in case there's potential limitations that I'm not thinking of at this stage and if anyone could offer some best practices/alternate ways to accomplish the task.

The project:
Similar to Rezz Goggles: http://trc.daily-beat.com/wp-content/up ... 1-copy.jpg

2 x 24 NeoPixel Ring (RGB - not white)
2 x 16 NeoPixel Ring (RGB - not white)
8 x Single NeoPixel LEDs (https://www.adafruit.com/product/1655) 4 on each side to make the inner eyes.
NRF52 Feather controller
2000mah Lipo battery
External USB Power Bank for charging and to run in case the Lipo dies
500C PowerBoost

Wiring:
My initial thought is to have each PIN connected to a different PIN (e.g. 7 and 11), most patterns will either be a mirror image or running the same patterns. I've only played with the example sketches, but I'm thinking that it would be easier to think is the array led number is the same for each eye (as long as the 0 pixel is aligned for each ring).

So, for each PIN, the data would flow from 24>16>the 4 individual LEDs. Then each PIN would control 44 LEDs (each "eye/one side of the goggles").

OR is it easier/better to have the data sent to all 88 pixels from one PIN.

Power:
I've gone through the the following tutorial (https://learn.adafruit.com/trinket-neop ... d?view=all) to see how the PowerBoost fits into the picture. I'm thinking that I would follow the same way (battery into the power boost and JST extension from the PowerBoost to power the feather) and the Power for Pixels would be drawn from the USB PIN.


Coding:
I have a project board (NRF52) connected to a breadboard which is running 2 x 12 NeoPixel Rings and I'm struggling to get the Bluefruit LE app working. I loaded the example NeoPixel Sketch (https://github.com/adafruit/Adafruit_nR ... opixel.ino), I'm able to connect to the controller and the rings light up. When I go to the color picker, when I select, for example, Red, the pixels will turn Cyan and it seems like the colors aren't aligned between the app and the pixels.

Please let me know if you know if you have a suggestions or related articles!

Thank you!

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ivanmakca
 
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Joined: Thu Jul 26, 2018 3:07 pm

Re: Goggles project - Wiring/Power Considerations

Post by ivanmakca »

Hey, what you have is great, I think you could also add in a LiPo - Microusb charger in there implemented into the circuit so you can just have one battery and then charge the entire thing rather then change batteries. And also, I think having them all in 1 pin is easier. Would you happen to have the STL file for the frame you're going to use>? if yes would you be willing to share it?

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