06-06-2016, 02:25 AM
(06-05-2016, 07:37 PM)CHeitkamp Wrote: 1. The APX803 gets quite warm, if the wifi/bt module is attached - usaly it stays cold
Further the APX803 being warm, I ran my pine64 for about 30 minutes without the wifi modules, powered it down, removed the module, waiting about five minutes for the temperatures to settle, and then ran it up again, with a couple other tests along the way. It would seem from the results that if the wifi module isn't really doing much, the AMX chip stays cool, if the wifi is active, it starts warming up a bit, but gets the hottest when the CPU is maxed out.
All measurements taken at an ambient temperature of 22*C, and an input voltage of 5.2v. First three measurements are temperatures of the chips (taken with a IR temp sensor - probably not the most accurate one around, but passable for comparison stats), final measurement is the avg power consumption @ 5.2v. Measurements were taken around the end of each run.
If you think the APX803 is getting hotter than say around 40*C at start up, or the power consumption of the pine64 is significantly more than 300-350ma whilst starting up, then I think there is something major wrong with the wifi board.
no wifi module
APX = 35/36
CPU = 45
MEM = 31/32
pwr = ~245mA
wifi module connected
APX = 36/37
CPU = 45
MEM = 31/32
pwr = ~251mA (no SSH connected)
pwr = ~317mA (SSH terminal active)
wifi module connected - playing internet radio over headphones via wifi \w SSH terminal active
APX = 40
CPU = 46
MEM = 32
pwr = ~321-326mA
wifi module connected - 5 mins stress (stress -c 4 -i 1 -m 1 -t 300)
APX = 52
CPU = 81/85
MEM = 41/42
pwr = ~680-720mA