pimoroni / hyperpixel4

Driver for the Pimoroni HyperPixel 4.0" Touchscreen Display
https://shop.pimoroni.com/products/hyperpixel-4?variant=12569485443155
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Power / Ground pin usage #96

Open NiklasBjornestal opened 4 years ago

NiklasBjornestal commented 4 years ago

Is there any documentation for which pins are needed for power / ground? Eg. is it possible to remove the connection to one of the 5V pins and one of the ground pins? I would like to power the raspberry pi using pin 2 or 4 and one ground pin (removing the pin from the header and soldering in wires direct to the raspberry pi).

According to https://pinout.xyz/pinout/hyperpixel4# pin 4 (5V) is unused all ground pins are used, but I'm assuming at least some of them are connected internally to a ground plane on the display so should be possible to remove one or more gnd pins from the connection

Gadgetoid commented 4 years ago

Any reason why would you remove the pin versus soldering wires directly to the underside of the pin header?

The 5V pins are tied together on the board, so you can use either or with no problems whatsoever.

As for which ground pin to use- they're all via'd through to the top side of the board and then pinned back down to any isolated spots/islands. I would say take your pick from any of the outside edge pins... but since you're using one of the 5V connections it would make sense to use the two pins that are adjacent to each other.

Physical pins: 4 and 6.

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