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Connecting screen and fan to GPIO pins at same time


 

I bought a new heatsink with a couple of fans on board to cool my pi in the hot summer at a remote site.
I also want to run a 3.5" screen at the same time but this plugs on to the GPIO, covering all the pins.
So how do I power? both?

K7TP


 

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Was pondering that too. ?I think the fans will need to move to a separate power supply. ?I was considering a battery bank with multiple 5v outputs so one could go do the Pi and one to power the fans.

73 Lawrence Harris VA7EDU




On Jul 9, 2020, at 12:33, Grover Cleveland via <k7tp@...> wrote:

I bought a new heatsink with a couple of fans on board to cool my pi in the hot summer at a remote site.
I also want to run a 3.5" screen at the same time but this plugs on to the GPIO, covering all the pins.
So how do I power? both?

K7TP


Mark Griffith
 

If you're talking about the 3.5 inch display from Adafruit, there is a header under the screen that has power to it. Pins 1 and 4 I think.

Mark
KD0QYN


On Thursday, July 9, 2020, 2:33:49 PM CDT, Grover Cleveland via groups.io <k7tp@...> wrote:


I bought a new heatsink with a couple of fans on board to cool my pi in the hot summer at a remote site.
I also want to run a 3.5" screen at the same time but this plugs on to the GPIO, covering all the pins.
So how do I power? both?

K7TP


 

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Do you know what GPIO pins the LCD display is using?? If you can find out, you can use something like this to make the non-used GPIO pins available for other uses:

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--David
KI6ZHD


On 07/09/2020 12:33 PM, Grover Cleveland via groups.io wrote:

I bought a new heatsink with a couple of fans on board to cool my pi in the hot summer at a remote site.
I also want to run a 3.5" screen at the same time but this plugs on to the GPIO, covering all the pins.
So how do I power? both?

K7TP


 

Does the 3.5" display GPIO connector have the holes open all the way thru, or are they dead ended so nothing could stick out the top?
If they are thru hole, just get a 40 pin stacking header.? Plugs onto the Pi GPIO pins and the leads sticking up are long enough to go thru the board on top.? They are used for stacking multiple hats on one Pi.
You could also plug the fans into a USB port for 5V as well

On Thu, Jul 9, 2020 at 12:42 PM Lawrence <va7edu@...> wrote:
Was pondering that too.? I think the fans will need to move to a separate power supply.? I was considering a battery bank with multiple 5v outputs so one could go do the Pi and one to power the fans.

73 Lawrence Harris VA7EDU




On Jul 9, 2020, at 12:33, Grover Cleveland via <k7tp@...> wrote:

I bought a new heatsink with a couple of fans on board to cool my pi in the hot summer at a remote site.
I also want to run a 3.5" screen at the same time but this plugs on to the GPIO, covering all the pins.
So how do I power? both?

K7TP