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GPIO Header with UART on a side of Flipper

It’s nice to have native instruments in multitool, but when your screwdriver not suitable — there is a chance that you can use knife blade.

I think it’s nice idea to make unused raspberry gpio accessible through standart pin header on a side of Flipper.

ph50_1x6

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What about logic level? Do we need TTL 5/3.3V levels or native RS-232 from -13 to +13V?

I believe TTL 5/3.3V would be the most universal.