I'm just not hugely sure if thats possible? I'm having trouble figuring out how much power each one of the displays needs, and if it is safe to just power them all from an uno?I'm also looking at adding 9 of these foot switches to my project too: http://www.aliexpress.com/item/New-Black-Auto-3PDT-9Pin-Stompbox-Guitar-Effects-Pedal-Foot-Switches-True-Bypass-FREE-SHIPPING/32246955677.htmlI basically need to be able to receive the signals from the individual foot switches, and be able to enter text to the displays via usb from my laptop.
Well, the answer is - you do not power displays from the Arduino unless you are powering it from USB or a regulated 5V supply. The USB source will provide half an Amp, but the on-board regulator when powered from the "VIN" or the "barrel" jack can only provide a third of this at best.So - what is your power source to be?
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