search

cyoung / stratux

Aviation weather and traffic receiver based on RTL-SDR.
BSD 3-Clause "New" or "Revised" License
1.06k stars 362 forks source link

an interesting snipet from the new pi release article .. power issues ... #304

Closed duecedriver closed 8 years ago

duecedriver commented 8 years ago

"The camera-shy Raspberry Pi 2 suffered problems with the switched mode power supply (SMPS) chip on the board, which turned out to be photosensitive. Too much light, such as from flash photography, caused fluctuation in the power supply and made the board reset. "

possibly part of peoples power woes if used on the glarshield in a translucent case...

only visible light or can it be affected by "other" radiated energy.. ie leaky sidelobe or transmitter power supplies.. etc..

thoughts..

kdknigga commented 8 years ago

https://www.raspberrypi.org/blog/xenon-death-flash-a-free-physics-lesson/

TL;DR: "the effect only happens under VERY specific circumstances. Flashes of high-intensity, long-wave light"

On Thu, Mar 3, 2016 at 7:36 AM, duecedriver notifications@github.com wrote:

"The camera-shy Raspberry Pi 2 suffered problems with the switched mode power supply (SMPS) chip on the board, which turned out to be photosensitive. Too much light, such as from flash photography, caused fluctuation in the power supply and made the board reset. "

possibly part of peoples power woes if used on the glarshield in a translucent case...

only visible light or can it be affected by "other" radiated energy.. ie leaky sidelobe or transmitter power supplies.. etc..

thoughts..

— Reply to this email directly or view it on GitHub https://github.com/cyoung/stratux/issues/304.

cyoung commented 8 years ago

That's a good catch. Anyone have power issues that may be light exposure related?

ghost commented 8 years ago

To reempahsize @kdknigga --

I’ve said it above, but it bears repeating, because I’ve seen some of you mention this in the forums and in comments sections elsewhere: common everyday light sources – e.g. bright sunlight, indoor lighting, angry cyclists* – don’t cause this to happen, so please don’t worry

peepsnet commented 8 years ago

My few bright flashes of brilance while working on my ppl have not seemed to of affected the stratux at all. I guess its not the correct wavelength?!

Unlike me, my stratux has performed flawlessly and is worth 10x its weight in gold!

Axtel4 commented 8 years ago

Cross post from Reddit:

Mine has been running for hours sitting on a glare shield, in a translucent case, and with a DME and Mode S transponder running with no ill effects. Oh, and cruising altitude at 8k to 10k ft.

I have also run it for hours sitting on the dashboard of a vehicle with no ill effects.