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Power issues with touchscreen
Posted: Fri Jan 20, 2017 12:02 am
by fawked
- Image1864263424.jpg (53.48 KiB) Viewed 872 times
Like the topic says, I'm getting the dreaded lightning bolt after hooking up the official touchscreen. I have nothing the USB ports, but use a Bluetooth controller...I thought maybe it was the PSU, even though I hadn't experienced this before. Same problem. So I dug out my raspi1 and the official hub you could but, rated at 5.2v 3a.... Still getting the lightning bolt.any suggestions?
Thanks in advance
Re: Power issues with touchscreen
Posted: Fri Jan 20, 2017 12:13 am
by DougieLawson
Your power supply is lying or the USB-A to microUSB cable is not up to standard or the hub may be limiting the current to 500mA.
Re: Power issues with touchscreen
Posted: Fri Jan 20, 2017 10:19 am
by davidcoton
My B+ and touchscreen needs a dual PSU with separate cables. Each outlet rated 2.4A, though I don't think both are that heavily loaded. I could not get a single PSU (up to 2.4A) to work, even when the PSU works well with a Pi3.
Re: Power issues with touchscreen
Posted: Fri Jan 20, 2017 3:42 pm
by fawked
davidcoton wrote:My B+ and touchscreen needs a dual PSU with separate cables.
Just to make sure I'm understanding correctly, you used the micro USB ports on both, instead of gpio?
Re: Power issues with touchscreen
Posted: Fri Jan 20, 2017 5:59 pm
by davidcoton
Yes, two microUSB cables to separate ports on a dual USB supply. No GPIO power connections.