Hardware switch for the PPKB battery?
07-17-2022, 10:17 AM
(This post was last modified: 07-17-2022, 10:22 AM by theResonant.)
(07-13-2022, 09:13 AM)magdesign Wrote: There was this other guy, adding a "ideal diode":
https://www.reddit.com/r/PINE64official/..._keyboard/
Wow. I didn't see their post.
Having such a diode within the keyboard is definitely more convenient than having a kill-switch to keep in mind.
(07-13-2022, 09:13 AM)magdesign Wrote: Do you know which cables we would have to solder to this switch?
Would the keyboard as a keyboard still work?
I don't know exactly, I have never opened the PPKB and I'm bad at soldering. I'd start with adding a switch directly on the battery outputs. This means that when the switch is 'off', the keyboard literally has no battery.
And the keyboard would still work as a keyboard, as far as I understand.
But if the keyboard stops working when the switch is 'off', then the solution is simple: put the switch on the 5V wire that goes to the Pogo pin going to the phone. This way, the power from the battery cannot reach the phone, but the keyboard itself still has power. However, this might confuse the power controller in the keyboard because it thinks it is delivering power to the phone, but the current to the phone is 0 mA.