powerboost 500c + 5 inch display + rpi

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pandadesh
 
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powerboost 500c + 5 inch display + rpi

Post by pandadesh »

i want to power the 5 inch no touch display with mini driver connected to a rpi(model B) with hdmi by a power boost 500+charger. I wish to use a 3.7V 6600mah lithium ion battery pack. How would i power both the devices? Will it work if i splice the cable and connect it to the respective ports? and do i need to power the pi by usb or by gpio?
if by gpio, then which pins? thanks in advance

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adafruit_support_rick
 
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Re: powerboost 500c + 5 inch display + rpi

Post by adafruit_support_rick »

You can certainly power the display from the PowerBoost 500 + Charger., but I don't think you can get enough power from your battery to power both the Pi and the display. You should use USB to power the Pi.

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pandadesh
 
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Re: powerboost 500c + 5 inch display + rpi

Post by pandadesh »

adafruit_support_rick wrote:You can certainly power the display from the PowerBoost 500 + Charger., but I don't think you can get enough power from your battery to power both the Pi and the display. You should use USB to power the Pi.
so will i need to use 2 different batteries instead of a big one. do i have to use two different chargers for each battery?

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Re: powerboost 500c + 5 inch display + rpi

Post by adafruit_support_rick »

pandadesh wrote:do i have to use two different chargers for each battery?
Yes, I'm afraid so.

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pandadesh
 
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Re: powerboost 500c + 5 inch display + rpi

Post by pandadesh »

adafruit_support_rick wrote:
pandadesh wrote:do i have to use two different chargers for each battery?
Yes, I'm afraid so.
can i use 1 usb port to charge the powerboost 500c for the pi and the other one for the display? I think not but rather clarify from the expert.
btw thanks for the support u have given

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Re: powerboost 500c + 5 inch display + rpi

Post by adafruit_support_rick »

the problem is that the Pi needs about 1A to operate, and the display needs another 500mA. That's why you need a separate power source for the display.

The PowerBoost 500 can put out up to 1A from a LiPo battery, so there's just not enough power there for both the Pi and the display.

The USB ports on the pi can only put out out a max of 170mA, so even if you put 1.5A into the Pi, you still can't run the display from those.

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pandadesh
 
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Re: powerboost 500c + 5 inch display + rpi

Post by pandadesh »

adafruit_support_rick wrote:the problem is that the Pi needs about 1A to operate, and the display needs another 500mA. That's why you need a separate power source for the display.

The PowerBoost 500 can put out up to 1A from a LiPo battery, so there's just not enough power there for both the Pi and the display.

The USB ports on the pi can only put out out a max of 170mA, so even if you put 1.5A into the Pi, you still can't run the display from those.
by usb port i didn't mean to power the display by usb
i want to know how i can charge both batteries attached to two powerboost 500c using a single usb port. i wish to put them in a custom case for portability. charging one device with two cables is a bit weird

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Re: powerboost 500c + 5 inch display + rpi

Post by adafruit_support_rick »

You can try making your own cable. That could work.

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pandadesh
 
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Re: powerboost 500c + 5 inch display + rpi

Post by pandadesh »

adafruit_support_rick wrote:You can try making your own cable. That could work.
so if a splice a usb cable will that work? something like this
Attachments
Screen Shot 2014-08-23 at 9.30.38 am.png
Screen Shot 2014-08-23 at 9.30.38 am.png (141.03 KiB) Viewed 338 times

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Re: powerboost 500c + 5 inch display + rpi

Post by adafruit_support_rick »

That should work, yes.

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pandadesh
 
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Re: powerboost 500c + 5 inch display + rpi

Post by pandadesh »

adafruit_support_rick wrote:That should work, yes.
well then thanks for clearing my doubts rick

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