[Android Head-Units] lagunacomputer:
Questions - USA AM radio frequencies - android power off/ no dead battery

Ok so i installed my Newsmy Carpad NU5002 today. I have a few questions. I searched this thread but just could not find the answers myself.

it is stock out of the box and running 1.1.2 software.

I have no idea what MCU version or whatever is installed, I am new to Android.

1. USA AM Radio Frequencies. The radio frequencies seem to step in the wrong kHz steps. I do the search function and it lands on 639 hz (kHz?) when it should be AM 640. I have played with the settings (JAP, UK CHN) but there does not seem to be a setting for USA AM frequencies. How the heck do I get my stations tuned in to the proper frequency? this is driving me crazy

2. How do i get the Android Carpad box to turn off when the ignition switch is off? The headunit turns off just fine. When i turn the ignition switch off, the android box stays powered on. It should be noted that I have a USB ELM327 ODB2 plugged into both the USB Host port AND the USB OTG port via a cheap USB hub/splitter/dongle/cable/adapter/octopus AT THE SAME TIME. This was the only way I could get DashCommander app to recognize the USB adapter (identifies as 'Prolific USB' in the DashCommander settings). I am worried my battery is going to die when I am not in the car. If I long press the power button on the little android box, a menu pops up, but it only gives me the 'Airplane Mode' and 'Sleep' options. There is no option to turn the Android box completely off.

Also I noticed that DashCommander (ODB2 app) says it has permissions to 'keep the android from sleeping' in the Settings -> Apps -> Dash Commander window.

Is it the App that is preventing the android from powering off?

Or is it the fact that the ODB2 USB adapter is plugged into the USB OTG port?

Some other observations i have noticed:

-Gave up on the SDR RTL2832u USB adapter for now. Even with the Android Drivers installed, it just kept interfering with DashCommand and the ODB2 USB adapter. Maybe I will play around with the USB HOST/OTG ports again at another time.

-Uninstalled the Android USB Mass Storage app for now. Again, was interfering with DashCommander and the USB ELM327 OBD2 adapter.

Any help with my radio frequencies and the power down issue would be greatly appreciated. I do not want to end up with a dead battery. (maybe a 12v solar panel to the car battery would negate any power loss if it has to stay on). Maybe I just need to do one of these ROM updates I keep reading about.

THANKS

Update:

FM radio works perfectly. Its just AM that seems to step in increments of 9kHz, where I believe it should be in steps of 10kHz.

Ok i just reread everything and found this, however the long press does not give me any options other than 'Airplane Mode' and 'Sleep'. How do I get the other options?

Power off, rebooting?

You can long press the power button to reboot the Android box.

Does the Android box stay powered on?

Yes, it stays on for about 2 hours after the ignition is off/key is out. After that it cuts the power off to the Android box.

Is there a way to change this auto-off timeout?

No, at least not yet...there are signs this will be added "soon"

How much power does this use while running and while on standby?

With 2 speakers connected the unit consumes ~0.55A when playing an mp3 over the network and ~0.75A when playing the radio. When disconnecting the ACC/Ignition feed and the screen turns off and unit goes into standby then it drops to ~0.03A. After 2 hours where it shuts down it appears to be drawing 0A. This might be the due to the range on my multimeter and its probably drawing something but it shows that they have designed it to not to kill your battery when you are away from the car. -welshblob