Hello all! I am in need of help! I am putting LED strips in a drum set. I've been brain storming but can't seem to come up with a solution.
Here's what we have: 4 Drums
Here's what we need: A battery powered, remote controlled LED strip in each drum.

I can not put holes in the drums to run cables of any kind. These strips need to be solo-powered but also have to be able to be turned on and off without touching them as the drums have heads on the top and bottom. There will be no way to access the strips.

I was thinking of some sort of magnetic switching device, but i don't know if this exists....

Any help would be greatly appreciated!


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Orngrimm5 years ago
Josehf Murchison wrote me a PM in which he calculated (well done pal!) the quite high power-storrage needed for around 4h light on one role. He estimated about one Carbattery each role per 4h. Thats correct of you dont take into consideration of other factors like dimming or other battery-chemistry.

I repost my Answer to him because i think the LiPos i mentioned may really be something worth looking at for such projects. I use Turnigy's over and over in such things...

Aye. But only if you let them run in full swing aka 1500 lumens which is a really crazy ammount of light for some mood-lighting... Dial that down to lets say 250 lumens which will need around 1/6 of the power.
So a 8.3 to 12.5 Wh-Battery.
Thats around 1 Ah @ 12V.
Nothing too big needed there even if we double or tripple the capacity!
Drop 70$ and you have a LiPo with 14V (Nice for some efficient Buck-DC/DC-Conversion to 12V) 42 Wh-Battery (3500mAh) with a weight of only 351 grams.
--> http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=5722

Or go for a Turnigy with 5 Amp-hours worth @ 22V (around 90 Wh!!!) costing only 54$. Makes a VERY good starting point for DC/DC-Conversion (Buck) to 12V. weighting in just shy over 800 grams.
--> http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=14845

hardly what i call a car-battery in terms of weight and bulk. :)
Oh: If you want to buy from Hobbyking, here is a little trick:
Go to the page of the item you want.
Then stay there for some time without changing or reloading the page. Soon there will be a "Special offer" discount which is around 5% discount.
I take that all the time! :)
MatBishop (author) 5 years ago
Ok. I think I can figure out the switch part. Now, I need to know how many of what kind of batteries I'd need to run an led strip.
For that to answer we need to know what LED-strips you are using. Normally that is written there...
But as Josehf Murchison already told, normally thats 12V but i have also seen other configurations...
MatBishop (author)  Orngrimm5 years ago
I will be using one of these types....

I just thought of something
At 20 minute sets turning off the LEDs between sets you would need at least a 50 to a 75 watt hour deep charge battery for one role just for one 4 hour gig.
That is a car battery.
I looked them up
12 volts 2 amps 24 watts on a 300 LED role
about the same size as the power converter for a 12 volt laptop
"Working Voltage: 12VDC"

Also a note:
for same Led# but multicolor and waterproof with remote-control and DC-Supply and Controler:
free shipped to you worldwide. Total cost: 37$

Also if you want only ON/OFF and only white, you go for http://dx.com/p/23-5w-3200k-1585-lumen-300-3528-smd-led-warm-white-light-flexible-strip-dc-12v-5m-109843 + http://dx.com/p/66678 for a total of 29.31$
Reed switches will be problematic the drum walls are thick and the distance can affect the reed switch as well as the drum skin vibrates and anything on the skin changes the sound.
I would connect the wires for the LED strip to two different metal component rivets or bolts on the inside of the drum and the battery pack to the same components on the outside of the drum.
You could use the brackets to tighten the drum skins and this way you don’t need to take the drum apart to change the batteries or even use a power converter.
Without knowing the specks of the LED strip I would guess 12 volts.
Ah... yes. Why not!
Also maybe you find hollow ribbets which holes are just the size of a normal plug like 4mm or 2mm. then you already have a nice option to plug in the external battery/DC-supply.
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