Hi Todd, The newest version of Raspbian shows a warning message if the board is underpowered, and previous versions showed a rainbow icon in the top right. FWIW I've been able to run RPis off of less than 2.5A even with usb peripherals and an hdmi. YMMV I suppose. Chris On Oct 26, 2016 4:33 PM, "Todd George via vcf-midatlantic" < vcf-midatlantic@lists.vintagecomputerfederation.org> wrote:
Date: Mon, 24 Oct 2016 09:24:06 -0400 Subject: Re: [vcf-midatlantic] TVs installed!
You can steal USB power from the USB port :-)
Just as an FYI, I'd think most televisions probably supply 500mA or mabye 1 Amp on their USB ports. Westinghouse doesn't seem to publish the power capabilities of their USB ports (at least not at quick glance). It looks like most of the Raspberry Pi devices can probably function on a 1 Amp feed, but that assumes nothing else is connected to the Pi.
Most of the USB power supplies marketed toward the Pi that I've seen out there are providing 2.4A or so.
Something to keep in mind in case the Pi acts strange when powered from the TV. -Todd