2016-04-28, 09:40 AM
(2016-04-28, 09:31 AM)tkoning Wrote: Hi
how is the experia table behaving in bright sunlight ? can you still read the display ?
If you want an alarm for low battery try a resitor bridge and an AD converter. I would not risk a direct coupling of the pi (and using the built in AD converter) to this bridge, but you should be able to use an arduino nano and an optocoupler connection to the raspberry Pi
Hi, the Xperia isn't great in direct sunlight but under the sprayhood it's fine, or even stand between it and the sun. Cleaning the fingerprints helps
Getting voltage into the Pi is no problem, already there's an arduino mega doing various other duties with a 16bit a/d connected waiting for something to do. I'm not sure of a way to get a tablet to sound an alarm though, been playing with a macro app on the tablet which seems powerful, but no way for it to take data from an mqtt feed.
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