PINE64
Power switch circuit - Printable Version

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RE: Power switch circuit - By-Jokese - 04-18-2016

First thing to do after testing the pine64, is going to be that, adding the power and reset switches.

RE: Power switch circuit - mribunal - 04-19-2016

Please show us how to properly solder the power/reset switches. Thanks!

RE: Power switch circuit - mFinnholm - 05-25-2016

(01-28-2016, 09:59 AM)patrickhwood Wrote:
(01-28-2016, 09:31 AM)pine.tree Wrote:
(01-28-2016, 09:15 AM)SkimMilk Wrote:
(01-28-2016, 08:59 AM)Gearsoul Wrote: When you guys say 'switch' ... do you mean the physical component that toggles?

So... the on/off switch of the classic Gameboy serves this purpose, and no additional component is needed to make use of on/off functionality?

Yes, the physical switch where you can turn on / off the Pine.
Currently on the board, there are connections for it, but no physical switch soldered on.

It was supposed to come as a stretch goal reward but there were some people who were negative about having the switch, thus it is now dangling in the air.

I don't see why they cannot have the switch there, and just leave it in the 'on' position if they do not want to use it?
I would love to see the switch there, so that I can turn on/off the Pine as and when I want, rather than pulling the power cable off...  Big Grin

I definitely agree. A switch would be great, i would love not to have to pull out cords or something, just a little flick of a switch is what i would prefer. If Pine decides not to include a power switch, you can always take a broken flashlight apart and use the click switch Tongue

I believe the switch that's on the board is actually a momentary contact that's connected to the PMIC.  A short press of the switch when the system is running generates an interrupt to the SoC from the PMIC, causing a soft power off with a graceful system shutdown.  A long hold (16 secs according to the AXP803 PMIC datasheet) forces the PMIC into a powered-off state, where it just shuts off the power to everything.

Pressing the power button when the board is off powers on the PMIC, which powers up all the devices on the board.

Do you know if when the switch is pressed, is there a voltage on one side that flows through or is it an interrupt when it is connected to the other side that is grounded?

EDIT: Nevermind! Read the datasheet more carefully, it is triggered by an interrupt when connected to gnd

RE: Power switch circuit - Kiwiboyus - 05-26-2016

I managed to lose my power switch right away thanks to some curious pets, but I have a couple of other momentary switches I can use instead, just not 100% sure how to solder them. From the picture posted earlier in this topic, it looks like you just use the front 2 holes and ignore the wider spaced ones behind them, is that correct?

RE: Power switch circuit - mFinnholm - 05-27-2016

(05-26-2016, 01:46 PM)Kiwiboyus Wrote: I managed to lose my power switch right away thanks to some curious pets, but I have a couple of other momentary switches I can use instead, just not 100% sure how to solder them. From the picture posted earlier in this topic, it looks like you just use the front 2 holes and ignore the wider spaced ones behind them, is that correct?

I think the wider spread holes are for holding the switch in place, if your switch has extra pins for that.

RE: Power switch circuit - Kiwiboyus - 05-27-2016

(05-27-2016, 12:45 AM)mFinnholm Wrote:
(05-26-2016, 01:46 PM)Kiwiboyus Wrote: I managed to lose my power switch right away thanks to some curious pets, but I have a couple of other momentary switches I can use instead, just not 100% sure how to solder them. From the picture posted earlier in this topic, it looks like you just use the front 2 holes and ignore the wider spaced ones behind them, is that correct?

I think the wider spread holes are for holding the switch in place, if your switch has extra pins for that.

Cheers!

RE: Power switch circuit - Kiwiboyus - 05-27-2016

[Image: XUTrE6l]

Got them soldered on and they work, thanks. I am not so happy with the way they look or the temporary acrylic case I made. I think I'll make something out of wood and get some better buttons when I have timetime.

RE: Power switch circuit - g_t_j - 06-02-2016

Can anyone please post photos (or a video even better) showing how the power button should be soldered on the board?

RE: Power switch circuit - janjwerner - 06-02-2016

(06-02-2016, 03:26 PM)g_t_j Wrote: Can anyone please post photos (or a video even better) showing how the power button should be soldered on the board?

Excuse the poor quality of pics and terrible quality of soldering:
https://i.imgsafe.org/0e5a3712dd.jpg
https://i.imgsafe.org/0e5a295390.jpg
https://i.imgsafe.org/0e5a2478b7.jpg

RE: Power switch circuit - tllim - 06-03-2016

(06-02-2016, 08:05 PM)janjwerner Wrote:
(06-02-2016, 03:26 PM)g_t_j Wrote: Can anyone please post photos (or a video even better) showing how the power button should be soldered on the board?

Excuse the poor quality of pics and terrible quality of soldering:
https://i.imgsafe.org/0e5a3712dd.jpg
https://i.imgsafe.org/0e5a295390.jpg
https://i.imgsafe.org/0e5a2478b7.jpg
Seems good :-) My soldering skill also same as you.