Smallest controlable led light

danadak

Well-Known Member

Most Helpful Member

• May 27, 2023

• #2

https://www.renesas.com/us/en/document/dst/da14531-module-datasheet?r=1601921

Google "TINY BLUETOOTH LED MODULE"


Regards, Dana.

 

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P

Pommie

Well-Known Member

Most Helpful Member

• May 27, 2023

• #3

How are you going to power them?

Mike.

 

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Nigel Goodwin

Super Moderator

Most Helpful Member

• May 28, 2023

• #4

Pommie said:

How are you going to power them?

Mike.

Click to expand...

Tape it to the side of a couple of D cells

 

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ricb007

New Member

• May 28, 2023

• #5

D cell battery looks to big. Is there smaller that is rechargeable

 

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danadak

Well-Known Member

Most Helpful Member

• May 28, 2023

• #6

LiPo or Coin cells come in some quite small sizes.

Battery Equivalents, Replacements and Cross Reference Charts

Battery Equivalents, Replacements, and Cross Reference Charts of button/coin cell batteries, cylindrical batteries, automotive and ...

www.batteryequivalents.com

https://www.varta-ag.com/fileadmin/varta/industry/downloads/products/lithium-ion-cells/CoinPower_Folder_en_geschuetzt.pdf

Regards, Dana.

 

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Nigel Goodwin

Super Moderator

Most Helpful Member

• May 28, 2023

• #7

ricb007 said:

D cell battery looks to big. Is there smaller that is rechargeable

Click to expand...

That was sarcasm, hence the smiley

Your size requirements seem rather restrictive though, how long are you hoping the batteries will last?.

 

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ricb007

New Member

• May 28, 2023

• #8

4 or 5 hours??? Maybe..

 

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Nigel Goodwin

Super Moderator

Most Helpful Member

• May 28, 2023

• #9

I'm dubious you could fit what you want in the size of a five pence piece anyway, never mind a battery as well - a multicoloured LED (like the WS2812) is 5mm square on it's own, and a 5p is only 18mm diameter.

 

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danadak

Well-Known Member

Most Helpful Member

• May 28, 2023

• #10

A sandwich of a coin cell, and a BLE part, and led (RGB). BLE modules down to 3 x 9 mm,
RGB leds to < 1 mm square , coin cells 5 mm to 25 mm diameter, your design doable I would think.


Regards, Dana.

 

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Jeembo

New Member

• May 29, 2023

• #11

Nigel Goodwin said:

I'm dubious you could fit what you want in the size of a five pence piece anyway, never mind a battery as well - a multicoloured LED (like the WS2812) is 5mm square on it's own, and a 5p is only 18mm diameter.

Click to expand...

OP actually made me curious on his project It's not everyday you need to fit like 10 LEDs within such small surface area

 

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ricb007

New Member

• Jun 1, 2023

• #12

Ohh. The mystery. What am I Creating. Am I the next Elon Musk.
I only need 1 controlable led and 1 battery in each 5pence size.

 

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ricb007

New Member

• Jun 1, 2023

• #13

And I need 10 of them.

 

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rjenkinsgb

Well-Known Member

Most Helpful Member

• Jun 1, 2023

• #14

Is it just the diameter of a five pence piece, or the thickness as well?

 

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ricb007

New Member

• Jun 1, 2023

• #15

As thin as possible.
As thin as 5p would be perfect but the thinner the better.

 

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rjenkinsgb

Well-Known Member

Most Helpful Member

• Jun 1, 2023

• #16

And, what does the battery life need to be? An active Bluetooth device, that can be connected to to send commands, takes power!

 

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Tony Stewart

Well-Known Member

Most Helpful Member

• Jun 1, 2023

• #17

Your requirements are either : under-powered or under-sized or both.
Please come back with better design specs. Your request is surreal.

 

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ricb007

New Member

• Jun 1, 2023

• #18

I can't say to much but I just want to get info on the smallest controlable led and rechargeable battery available.
It would be similar to modern head phones. Individual chargeable units but with a multi coloured led to illuminate clear plastic.

 

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ChrisP58

Well-Known Member

Most Helpful Member

• Jun 1, 2023

• #19

ricb007 said:

I can't say to much but I just want to get info on the smallest controlable led and rechargeable battery available.
It would be similar to modern head phones. Individual chargeable units but with a multi coloured led to illuminate clear plastic.

Click to expand...

Just make sure that whatever you choose is indeed rechargeable. Most small lithium coin cells are not.

 

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danadak

Well-Known Member

Most Helpful Member

• Jun 2, 2023

• #20

This might help in decision of battery selection :




Regards, Dana.

 

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