05-20-2019, 02:39 PM
(This post was last modified: 05-20-2019, 02:52 PM by phuzy.
Edit Reason: Wording / spelling
)
Thanks!
No instruction manual. Can provide if other members are interested as well.
I've made similar modifications to other devices before. Just went by my own experience.
Scoped out a good spot inside the pinebook with an unused threaded insert.
Cut out the necessary hole and edges from the plastic shell/panel to expose/accommodate the micro USB.
Probed the board for the 5V and GND connections to the barrel jack.
Soldered wires connecting the barrel jack connections to the micro USB breakout.
I didn't use a diode but it would help to prevent reverse voltage when both the barrel jack and micro USB are powered by different sources.
As for the OTG-USB. I found four closely situated pads near the WiFi chip on the motherboard but I'm not sure if those are the OTG-USB ones. I did not use the OTG-USB connections for this mod. If they are readily accessible, it may be the better option as opposed to connecting to the barrel jack.
No instruction manual. Can provide if other members are interested as well.
I've made similar modifications to other devices before. Just went by my own experience.
Scoped out a good spot inside the pinebook with an unused threaded insert.
Cut out the necessary hole and edges from the plastic shell/panel to expose/accommodate the micro USB.
Probed the board for the 5V and GND connections to the barrel jack.
Soldered wires connecting the barrel jack connections to the micro USB breakout.
I didn't use a diode but it would help to prevent reverse voltage when both the barrel jack and micro USB are powered by different sources.
As for the OTG-USB. I found four closely situated pads near the WiFi chip on the motherboard but I'm not sure if those are the OTG-USB ones. I did not use the OTG-USB connections for this mod. If they are readily accessible, it may be the better option as opposed to connecting to the barrel jack.