![]() ![]() I have battery backup and after allowing the battery to deplete down to zero the system auto powers off when the battery gets too low. I am currently experimenting with using either a small microcontroller to control the power button on the board or doing this in software. I too want to use this in a remote location and need it to auto power up. It must be in the Android code and if I can get the damn source to compile and run, I will track this down. Is that likely to be the problem, as I don't have a battery connected.Īlso, I have tried setting "Quick Boot next time", but when I've done that the A20 often comes up with Airplane mode switched on. PS I've seen the bit in the A20 user manual about Android entering battery save mode if "Quick Boot" isn't selected. I want to use the A20 for an unattended embedded application, so is there a way to guarantee consistently that it does boot on power-up? I don't get consistent behaviour - sometimes the board boots when power is applied, sometimes it doesn't. I get the same problem if I shut down the tablet using "reboot -p" from the command shell. If I shut down my Android A20-4GB using the UI (press power button for ~2 secs, select "Power off", untick "Quick Boot Mode next time", click "OK") and disconnect the power (12V into the barrel connector), then when I reconnect the power the board often doesn't boot straight away - I have to press the power button for 2 seconds to get it to go.
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