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Battery Power For 16x32 RGB LED Matrix Panel
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Battery Power For 16x32 RGB LED Matrix Panel

by LucidMomentum on Sat Mar 29, 2014 12:03 am

Hey everybody,

I'm working on a project that will be a portable LED Matrix Panel, hopefully.

However I'm running into a dilemma regarding portable power. I know the Arduino UNO I'm using to drive it can be powered via a battery pack, but does the 16x32 panel have a voltage regulator?

Would a battery pack like this one:
http://www.adafruit.com/products/875

Be a sufficient power source?

Or would it be smarter to use something like this:
http://www.ebay.com/itm/5V-2A-Mobile-Po ... 4897.l4275

in conjunction with a USB to DC cable?

I know this was brought up in a previous discussion, but that one used the USB battery pack for the RPi:
viewtopic.php?f=47&t=45035

If I could achieve similar results with the AA battery pack, I'd prefer to use that for cost reasons. However, if a lithium ion battery pack is the better option I can go with that.

Any advice would be much appreciated.
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Re: Battery Power For 16x32 RGB LED Matrix Panel

by adafruit_support_mike on Sat Mar 29, 2014 2:11 am

The board specifies a 5v input, so it's safest to assume there's no onboard regulation.

The main challenge with making large numbers of LEDs portable is battery life. The 16x32 panel has 512 LEDs, and can draw 2A at full power. That will drain a 4-pack of AAs in about an hour (worst case). This power brick will give you five times as much battery life: http://www.adafruit.com/products/1566

The initial cost is higher, but when you figure each recharge of the LiPo unit is equivalent to a 20-pack of AAs, it doesn't take long to pay for itself.
When you void a product warranty, you give up your right to sue the manufacturer if something goes wrong and accept full responsibility for whatever happens next. And then you truly own the product.

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Re: Battery Power For 16x32 RGB LED Matrix Panel

by LucidMomentum on Sat Mar 29, 2014 12:11 pm

adafruit_support_mike wrote:The board specifies a 5v input, so it's safest to assume there's no onboard regulation.

The main challenge with making large numbers of LEDs portable is battery life. The 16x32 panel has 512 LEDs, and can draw 2A at full power. That will drain a 4-pack of AAs in about an hour (worst case). This power brick will give you five times as much battery life: http://www.adafruit.com/products/1566

The initial cost is higher, but when you figure each recharge of the LiPo unit is equivalent to a 20-pack of AAs, it doesn't take long to pay for itself.


Thanks for clarifying! I actually found out a friend of mine has one of these power packs:

http://www.amazon.com/gp/product/B008YRG5JQ/

And he's going to let me test it out. Seems like a LiPo / LiIon battery is the best way to go.

*EDIT*

As an update, the EasyAcc is working like a champ. Had it running for two hours now and the power indicator is showing it hasn't dropped below 75% total charge yet. Powering both the LEDs and the Arduino. Looks like this project is a go!
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Re: Battery Power For 16x32 RGB LED Matrix Panel

by zggy on Thu Aug 13, 2015 5:29 pm

I'm also trying to make my LED matrix portable (all though my board is a 32x32), and I'm going to be using a portable battery type thing for power, but I'm not sure how I'm going to connect it to my board.
Attachments
Photo on 8-13-15 at 5.26 PM.jpg
This is what the back of my board looks like. I currently am using the cord that came with it attached to a wall plug, but I'm having trouble figuring out what kind of cord will actually attach to my board...
Photo on 8-13-15 at 5.26 PM.jpg (184.08 KiB) Viewed 1250 times

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Re: Battery Power For 16x32 RGB LED Matrix Panel

by abarlam on Thu Apr 27, 2017 5:18 am

Good to hear you are having success with a USB pack. I just ordered the 64x32 panel, and plan on hooking it up to a Pi Zero W for a mobile LED display. I am hoping that with the Pi Zero W it will use even less power.

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Re: Battery Power For 16x32 RGB LED Matrix Panel

by tatacali88 on Sat Sep 09, 2017 2:55 pm

abarlam wrote:Good to hear you are having success with a USB pack. I just ordered the 64x32 panel, and plan on hooking it up to a Pi Zero W for a mobile LED display. I am hoping that with the Pi Zero W it will use even less power.


Hey, I am brand new to this. So, I am planning to do something very similar to your idea. and wanted to ask you how your project went.

Also, could you share any tips or ideas?

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Re: Battery Power For 16x32 RGB LED Matrix Panel

by scinutz on Mon Feb 11, 2019 4:49 pm

LucidMomentum wrote:
adafruit_support_mike wrote:The board specifies a 5v input, so it's safest to assume there's no onboard regulation.

The main challenge with making large numbers of LEDs portable is battery life. The 16x32 panel has 512 LEDs, and can draw 2A at full power. That will drain a 4-pack of AAs in about an hour (worst case). This power brick will give you five times as much battery life: http://www.adafruit.com/products/1566

The initial cost is higher, but when you figure each recharge of the LiPo unit is equivalent to a 20-pack of AAs, it doesn't take long to pay for itself.


Thanks for clarifying! I actually found out a friend of mine has one of these power packs:

http://www.amazon.com/gp/product/B008YRG5JQ/

And he's going to let me test it out. Seems like a LiPo / LiIon battery is the best way to go.

*EDIT*

As an update, the EasyAcc is working like a champ. Had it running for two hours now and the power indicator is showing it hasn't dropped below 75% total charge yet. Powering both the LEDs and the Arduino. Looks like this project is a go!


I am working on a project and looking towards the battery pack and connecting it to the 64x32 board. what cable did you use to connect from USB to the back of your board?

My project will be using a Pic32MZ and the 64x32 RGB matrix. We can get the graphics to show up from the pic32 to the LED board, but were using the suggested External power supply for testing... need to make it portable.

Any info will be helped

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