DC Power IN Power-ON Switch Reset Switch -- Batt Required
#1
   

I have a couple of tips regarding the DC IN Power-ON & Reset switches. First off, they are right-angle switches which have a beefy frame (say heatsink) and therefore require a 40 watt iron to solder in (your little 15 or 25 watt iron isn't going to cut it). 

Secondly, and maybe most importantly, the power-on switch is not going to work without the DC batt plugged in and fully charged. The PMIC detects that the batt isn't there and immediately shuts down the system; this is why several of you are reporting that your switch isn't working. The reset does just that (a reset) not a good thing to do without a clean shutdown first. Holding the power-on button for a while will do a hard power-off if that were required (like any notebook computer, &c). Otherwise, the power-on button sends a keycode to the kernel (I have not been able to verify but I think its 116; let you know). This could be trapped to signal a clean poweroff. With a fully charged batt plugged in the power-on button will power-up the device without removing the main power plug. Not sure if a small backup battery would be enough; will have to test.

marcus

PS ... click the thumbnail above to get a larger view/
  Reply


Messages In This Thread
DC Power IN Power-ON Switch Reset Switch -- Batt Required - by MarkHaysHarris777 - 06-24-2016, 02:11 PM

Possibly Related Threads…
Thread Author Replies Views Last Post
  Which Power Supply Unit for Pine64 A64 DB V1.1 2GB REV B (year 2016)? databaseprogrammer 1 3,510 07-03-2021, 01:29 AM
Last Post: tllim
Lightbulb Alternate Power DC-IN on the Euler Bus also with PI filter for batt operation MarkHaysHarris777 13 27,327 12-19-2020, 09:53 PM
Last Post: evilpete
  Once Again: Power Supply problems I guess (Pine A64+ locking up) marcelser 0 3,751 06-04-2018, 03:11 PM
Last Post: marcelser
  Power supply problems. larsen8989 5 10,264 05-03-2018, 09:01 PM
Last Post: tllim
  solar power on a Pine64 tablet Little_Johnny 11 18,121 03-20-2018, 12:01 AM
Last Post: pfeerick
  Power up HDDs c4tich 3 6,936 03-18-2017, 09:18 AM
Last Post: Luke
  Provide power in via Pi-2 header BenCranston 22 33,009 03-08-2017, 10:38 PM
Last Post: pfeerick
  any danger from using 2 power sources at same time? dkryder 3 7,615 01-20-2017, 10:45 PM
Last Post: MarkHaysHarris777
Lightbulb A Tale of Two Power Supplies - why good is good and better is best MarkHaysHarris777 9 19,902 01-07-2017, 11:59 PM
Last Post: aegrotatio
  First cable for Euler Bus power done! AVL2016 24 36,453 10-05-2016, 06:43 AM
Last Post: Ghost

Forum Jump:


Users browsing this thread: 1 Guest(s)