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Micro LEDs... How can I power them in the smallest footprint possible??? Answered

Hi - I've been a "member" for 5 years now, but unfortunately never submitted projects... I'm more of an observer than a teacher :)

I have this project I've been thinking of for quite some time now, but I simply cannot come up with a way to make it real. It's pretty simple, I just want to be able to light up an extremely small LED in a very small amount of space. But, I'm finding the power source is the headache. I wanted to get input or suggestions from anyone willing to share/help me!

Basically, I have a 5mm diameter space (x approx 7mm high) to work with... and this would be to house the LED, power source and any type of on/off control or switch. My initial thoughts were toss in a micro LED, run it off of a wireless coil or super small battery and control it with a magnetic latching switch for on/off control. But, since the original idea popped up, it appears for wireless power the coil would need to be too large to fit in this space. For battery power, I've found very small 1.5V watch batteries that I could stack in a pair for 3V, but I've learned they would likely only run an LED for about 15-20 mins before they'd die.

If they were wireless, I'd want some free range of motion and distance on the LEDs, being able to light up at least 6 ft. or so from the power source, if possible.

This is driving me crazy! Can it be done, without costing a ton of money to develop?

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mpilchfamily

6 years ago

Those small watch batteries are as good as its going to get. If you want longer run times you'll have to go with a larger battery. Otherwise you have to wire it to your power source.