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Large(ish) LED lighting project
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Large(ish) LED lighting project

by sinisterfrog on Sat Jul 31, 2021 7:59 pm

Greetings, I am putting the finishing touches on an outdoor covered seating area and would appreciate some direction in a lighting project. I am a novice at programing and anything electrical but I have done a few small trinket sized circuit playground projects.

Id like to use various flavors of hanging lamps like these (https://www.amazon.com/Hitommy-Moroccan ... B07DQJ6PZN) and put LED lighting them.

I was hoping to use either a bluetooth enabled Circuit Playground Express or a Feather (mostly because I have them already) to drive LEDs in the 10-20 lamps. I figured id use a neopixel ring or a jewel as the LEDs. Based on some earlier reading it sounds like I'll require an external power source because I may be running 200+ leds.

The plan is butcher various code I've seen in the projects on adafruit and use them to create a handful functions ~ flickering orangish light to simulate candles, a slow moving rainbow effect, bright white light...I guess that's all I've imagined so far. The plan is to use bluetooth connect to change between the functions.

Is this a feasible project or am I going about this the wrong way and if so can you point me in the right direction.

Appreciate the help.

sinisterfrog
 
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Joined: Fri May 01, 2020 12:46 am

Re: Large(ish) LED lighting project

by dastels on Sat Jul 31, 2021 8:51 pm

Sounds cool!

An NRF52840 based board will do well. Plenty of computational power, speed, memory, and bluetooth. You could use a bluetooth friend board to add BLE to another board.

Jewels are nice for that sort of thing. They are concentrated and rugged. As for power, yes, you'll definitely need an external source. That's especiall ythe case when you are talking about running them bright white. That's 60ma per NeoPixel. For 200 Nixels you'll need 12A at 5v. With projects involving a lot of NeoPixels, it's not uncommon to have different sections powered by separate supplies. Just remember that all the grounds need to be connected. See https://learn.adafruit.com/adafruit-neopixel-uberguide. The biggest challenge will be managing so many NeoPixels over a (sounds like) distance.

I did something vaguely similar (flames) a while back for a D&D prop: https://github.com/dastels/dungeon-lights. It used a couple jewels for some fire effects. The InnerFlame stuff is probably the most relevant. It takes care of the fire in the statue's mouth.

Dave

dastels
 
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Re: Large(ish) LED lighting project

by sinisterfrog on Sun Aug 01, 2021 2:42 pm

That is an excellent prop!

" Just remember that all the grounds need to be connected. See https://learn.adafruit.com/adafruit-neopixel-uberguide. The biggest challenge will be managing so many NeoPixels over a (sounds like) distance."


Can you elaborate on these two?

I imagine the distance will be quite large. How will the impact everything?

sinisterfrog
 
Posts: 2
Joined: Fri May 01, 2020 12:46 am

Re: Large(ish) LED lighting project

by dastels on Sun Aug 01, 2021 5:09 pm

You should avoid long power lines, and you might need boosters on the data line if wires are long. See the guide.

Dave

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