Battery and charging advice for raspberry pi using adafruit

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Lachlan2104
 
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Battery and charging advice for raspberry pi using adafruit

Post by Lachlan2104 »

Hello internet/adafruit support

I am currently making a portable raspberry pi and i am sort of stuck on a battery issue.

I have some of your wireless inductive chargers that receive 5 volts (Product 1407). I would like to wire these into a rechagerable battery possibly your 6600 mah that runs at 3.7 volts (product 354).
I would also like to be able to physically connect the portable device for a faster charge when i am not near my inductive transmitter.

Connected to the raspberry pi 2 i will have your 7 inch touch screen (product 2354) that i think runs off 9 volts. A mini rii keyboard (product 922) a powered usb hub (do you sell them??) And your usb wifi module (product 814)

What battery will i need to power this mountain of your products and will i need a conversion board to wire your inductive chargers to the battery?
Will i be able to charge the device will using it? (As i have seen some of your wiring diagrams have a switch for usage and a charging).

To sum up i want to be able to wireless charge a battery and hardwire it (not at same time) while using the device. Than i want decent battery life once its charged...
Do i need some of your power boost boards?


As a unrelated question to my previous i am currently having thoughts about sound for the final product and i would like both speaker and usb is their such a switch that redirects power to headphones rather than the speaker once headphones are plugged in..

Sorry about the overload aha
Thanks a million

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adafruit_support_rick
 
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Re: Battery and charging advice for raspberry pi using adafr

Post by adafruit_support_rick »

You can run the Pi from a battery with a PowerBoost 500C
https://www.adafruit.com/products/1944

But you can't run a 9V display from it, and it won't have enough capacity for a self-powered hub as well. What are you planning to attach to the hub?

We do have a hub:
https://www.adafruit.com/product/961

Maybe what you really want is a 10000mAh PowerBank
https://www.adafruit.com/products/1566

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Lachlan2104
 
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Re: Battery and charging advice for raspberry pi using adafr

Post by Lachlan2104 »

Ok i will look into the 10000 mah battery. Thank you, so how should i go about powering the screen?

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Lachlan2104
 
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Re: Battery and charging advice for raspberry pi using adafr

Post by Lachlan2104 »

And what about charging and using at the same time? And wireless charging?

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adafruit_support_rick
 
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Re: Battery and charging advice for raspberry pi using adafr

Post by adafruit_support_rick »

Hmmm.. reading more about the power bank, it probably won't work for you.


Maybe this will work: A USB charger, and a PowerBoost 1000.
https://www.adafruit.com/products/259
https://www.adafruit.com/product/2030

Connect either a USB power source or your wireless charger to the USB input of the charger. Connect the PowerBoost to the LOAD output of the charger.

Get an extra one of these and splice it to the one that comes with the charger to make a cable between the charger and the power boost.
https://www.adafruit.com/products/261

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Lachlan2104
 
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Re: Battery and charging advice for raspberry pi using adafr

Post by Lachlan2104 »

So how much power does the touch screen use when its working with the decoder. Its got information but its kinda confusing.

What will be the total voltage and mahs needed once i am using the touch screen, the raspberry pi 2, usb wifi, decoder for touch screen and a powered usb hub.

I have found a power pack that can start a car so maybe i could start at 12 volts and use a set of resistors or something to reduce it to what i need.
https://m.catchoftheday.com.au/product/ ... er-321014/

or you have a screen that runs off 5 volts?

How am i supposed to power that touch screen?

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adafruit_support_rick
 
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Re: Battery and charging advice for raspberry pi using adafr

Post by adafruit_support_rick »

The screen you linked to would require a TFP401 driver board. The TFP401 runs off of 5V, so you've in luck there.

The PowerBoost 1000 and charger I linked will give you about 2A from a 6600mAh battery. That should be enough for the pi, display, wifi, etc.
However, what are you planning to plug into the powered hub? That will affect the power calculation.

If you want to use the 12V battery, then you probably want our 3A buck converter to take the 12V down to 5V
https://www.adafruit.com/product/1385

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Lachlan2104
 
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Re: Battery and charging advice for raspberry pi using adafr

Post by Lachlan2104 »

The hub will just be using usb's and ocassionally a hard drive. So the screen only uses the same as the pi?

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Lachlan2104
 
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Re: Battery and charging advice for raspberry pi using adafr

Post by Lachlan2104 »

does your 6600 battery have enough juice to power both the pi and a 5volt screen

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Re: Battery and charging advice for raspberry pi using adafr

Post by adafruit_support_rick »

Lachlan2104 wrote:does your 6600 battery have enough juice to power both the pi and a 5volt screen
Yes. But i'm skeptical of powering the hub as well. Perhaps you could use a separate battery for that. Or split the battery and use two PowerBoosts - one for the Pi and screen, and the other for the hub.

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Lachlan2104
 
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Re: Battery and charging advice for raspberry pi using adafr

Post by Lachlan2104 »

Would i be able to charge and use the battery at the same time?
And what sort of battery life would i be looking at?
And do you have a device to split a battery output to pi and screen from the power boost or does the power boost have two outputs?

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phargo
 
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Re: Battery and charging advice for raspberry pi using adafr

Post by phargo »

I am interested in using product id 354 to power a BeagleBone Black.
Does the 354 plug directly into the BeagleBone?
Is the 354 directly chargeable from the BeagleBone?

Thanks!

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Lachlan2104
 
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Re: Battery and charging advice for raspberry pi using adafr

Post by Lachlan2104 »

Umm does the begalbone a 5 volt device that runs on 2 amps like the pi?
Cause if it is with that particular battery you will need the power boost 500 to up the volts to run it properly, i am having the same problems with a raspberry.
I am planning to just get a phone charger much like this one
http://zerolemon.com/product/zerolemon- ... ing-black/ as it will power it without such a board and excessive price. And it will have longer battery life than the one you mentioned

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adafruit_support_rick
 
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Re: Battery and charging advice for raspberry pi using adafr

Post by adafruit_support_rick »

Lachlan2104 wrote:Would i be able to charge and use the battery at the same time?
And what sort of battery life would i be looking at?
And do you have a device to split a battery output to pi and screen from the power boost or does the power boost have two outputs?
You're probably looking at 3-ish hours from a 6600mAh battery.
The battery will charge using whatever leftover current there is from the USB supply.
You don't need a device to split the battery. Just wire the battery in parallel to the two PowerBoosts.

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adafruit_support_rick
 
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Re: Battery and charging advice for raspberry pi using adafr

Post by adafruit_support_rick »

phargo wrote:I am interested in using product id 354 to power a BeagleBone Black.
Does the 354 plug directly into the BeagleBone?
Is the 354 directly chargeable from the BeagleBone?

Thanks!
The Beaglebone requires 5V. You will need to use a PowerBoost 500C to power the BBB from the battery, and to charge the battery:
https://www.adafruit.com/product/1944

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