Brasil - I have a dream
Moderators: adafruit_support_bill, adafruit
Please be positive and constructive with your questions and comments.
- adafruit_support_rick
- Posts: 35092
- Joined: Tue Mar 15, 2011 11:42 am
Re: Brasil - I have a dream
No. That's an audio player.
- juanled
- Posts: 16
- Joined: Sat Aug 30, 2014 7:43 pm
Re: Brasil - I have a dream
Friend, I want to call between 1300-2500 (not decided yet exactly how I will use) Leds -> NeoPixel Digital RGB LED Strip 144 LEDS 1m . 'll Call them continuously connected to one another in a 12v battery 9800mAh. As the whole circuit and thousands of LEDs estaram working on a 12v rechargeable battery 9800mAh, voltage drop not happened? Ira work well?
Thank you so much !! :)
Thank you so much !! :)
- adafruit_support_bill
- Posts: 88093
- Joined: Sat Feb 07, 2009 10:11 am
Re: Brasil - I have a dream
Code: Select all
1300-2500 (not decided yet exactly how I will use) Leds -> NeoPixel Digital RGB LED Strip 144 LEDS 1m . 'll Call them continuously connected to one another in a 12v battery 9800mAh.
2) With 2500 pixels, a 9800mAh battery will last about 4 minutes (if it doesn't burn up first).
2500 pixels will require as much as 150 amps of power at 5v. That is a lot of power and can be quite dangerous if not managed properly. We recommend that you find a qualified electrical engineer to help you design this system.
- juanled
- Posts: 16
- Joined: Sat Aug 30, 2014 7:43 pm
Re: OctoWS2811 with Teensy 3.1
Friend, I want to call between 1300-2500 (not decided yet exactly how I will use) Leds -> NeoPixel Digital RGB LED Strip 144 LEDS 1m . 'll Call them continuously connected to one another in a 12v battery 9800mAh. As the whole circuit and thousands of LEDs estaram working on a 12v rechargeable battery 9800mAh, voltage drop not happened? Ira work well?
Thank you so much !! :)
Thank you so much !! :)
- adafruit_support_bill
- Posts: 88093
- Joined: Sat Feb 07, 2009 10:11 am
Re: OctoWS2811 with Teensy 3.1
1) You can't run Neopixels on 12v. They are 5v devices.I want to call between 1300-2500 (not decided yet exactly how I will use) Leds -> NeoPixel Digital RGB LED Strip 144 LEDS 1m . 'll Call them continuously connected to one another in a 12v battery 9800mAh.
2) With 2500 pixels, a 9800mAh battery will last about 4 minutes. But at that discharge rate, it is likely to burn up first.
2500 pixels will require as much as 150 amps of power at 5v. That is a lot of power and can be quite dangerous if not designed properly. We recommend that you find a qualified electrical engineer to help you design this system.
- juanled
- Posts: 16
- Joined: Sat Aug 30, 2014 7:43 pm
Re: Brasil - I have a dream
Friend I know he only uses 5v, I would use a resistor to handle the load. How many amps consumes 1 led? how many amps use 1 meter?
as does the calculation to know how long she will remain lit
as does the calculation to know how long she will remain lit
- adafruit_support_bill
- Posts: 88093
- Joined: Sat Feb 07, 2009 10:11 am
Re: Brasil - I have a dream
You cannot use a resistor for this because the current requirements are variable. You need a power source that is no more than 5v If you are using batteries, a 4-cell NiMH pack will give you 4.8v which is close enough. In any case DO NOT POWER WITH MORE THAN 5V!.Friend I know he only uses 5v, I would use a resistor to handle the load.
Each pixel consists of 3 LEDs. Each LED can consume as much as 20mA at full brightness. So each pixel needs 60mA.How many amps consumes 1 led? how many amps use 1 meter?
1 meter of 144 pixels needs 144 * 60 = 8640 mA (8.64A)
See this guide for more details: https://learn.adafruit.com/battery-powe ... and-strips
- juanled
- Posts: 16
- Joined: Sat Aug 30, 2014 7:43 pm
Re: Brasil - I have a dream
Which one rechargeable battery specifications you indicate to me 1metro of 144 LEDs last for 1 hour 30 minutes?
- adafruit_support_rick
- Posts: 35092
- Joined: Tue Mar 15, 2011 11:42 am
Re: Brasil - I have a dream
You'll need about a 5V 20Ah battery for that. We don't have such a thing in the store.
- juanled
- Posts: 16
- Joined: Sat Aug 30, 2014 7:43 pm
Re: Brasil - I have a dream
What do you think I use 2 batteries (http://www.miniinthebox.com/pt/icr-1865 ... 28011.html) at 1 meter 144 leds? will last for how long?
- Franklin97355
- Posts: 23911
- Joined: Mon Apr 21, 2008 2:33 pm
Re: Brasil - I have a dream
There is not set value for how long they will last. You will have to experiment on your own to find out.will last for how long?
- adafruit_support_bill
- Posts: 88093
- Joined: Sat Feb 07, 2009 10:11 am
Re: Brasil - I have a dream
5000 mAh means 5000 mA (5A) for one hour. With the whole strip at 100% brightness (8640 mA) you will get about 34 minutes. If your average brightness is about 35%, you can run for about 1.5 hours.
Please be positive and constructive with your questions and comments.