novaBBS - comp.mobile.android - Re: Android drains connected drone controller, Android's fault?

Android drains connected drone controller, Android's fault?

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From: always.l...@message.header (John Doe)
Newsgroups: comp.mobile.android
Subject: Android drains connected drone controller, Android's fault?
Date: Thu, 13 May 2021 00:25:52 -0000 (UTC)
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by: John Doe - Thu, 13 May 2021 00:25 UTC

Knowing something about electronics, this is interesting...

DJI, a drone maker, is blaming Android for draining current from its drone
controller during use. Here's a statement from a DJI website moderator...

> The reason why your Android mobile device is discharging your [drone]
> remote controller. This is because the Android mobile device needs
> on-going 500ma to maintain the USB connection, so there is no option for
> the Android device to disable the charging mode, it is related to the
> android system and the communication protocol. This is regulated by the
> Android Open Accessory (AOA).

Does that sound legitimate?

Communication doesn't require 500 mA. So the Android smartphone arbitrarily
sucks a half an amp from the connected device? For what purpose, punishment?

The current/power coming from the drone controller is not utilized, since it
charges the phone.

Re: Android drains connected drone controller, Android's fault?

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From: always.l...@message.header (John Doe)
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Subject: Re: Android drains connected drone controller, Android's fault?
Date: Thu, 13 May 2021 00:47:58 -0000 (UTC)
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by: John Doe - Thu, 13 May 2021 00:47 UTC

Unless DJI is missing a way around it, apparently that's what the
seemingly unsophisticated protocol requires...

> Android USB accessories are designed to attach to Android-powered
> devices. Such accessories adhere to AOA, enabling them to detect
> Android-powered devices that support accessory mode, and must provide
> 500mA at 5V for charging power. Some previously-released Android-powered
> devices are capable of acting only as a USB device and cannot initiate
> connections with external USB devices. AOA support overcomes this
> limitation, enabling you to build accessories that can initiate
> connections and interact with an assortment of Android-powered devices.

There is no real need to suck drone controllers dry, considering the fact
the smartphone battery is being charged during use.

I wrote:

> Knowing something about electronics, this is interesting...
>
> DJI, a drone maker, is blaming Android for draining current from its
> drone controller during use. Here's a statement from a DJI website
> moderator...
>
>> The reason why your Android mobile device is discharging your [drone]
>> remote controller. This is because the Android mobile device needs
>> on-going 500ma to maintain the USB connection, so there is no option
>> for the Android device to disable the charging mode, it is related to
>> the android system and the communication protocol. This is regulated by
>> the Android Open Accessory (AOA).
>
> Does that sound legitimate?
>
> Communication doesn't require 500 mA. So the Android smartphone
> arbitrarily sucks a half an amp from the connected device? For what
> purpose, punishment?
>
> The current/power coming from the drone controller is not utilized,
> since it charges the phone.
>

!07/11 PDP a ni deppart m'I !pleH

computers / comp.mobile.android / Re: Android drains connected drone controller, Android's fault?

computers / comp.mobile.android / Re: Android drains connected drone controller, Android's fault?

Subject	Author
Android drains connected drone controller, Android's fault?	John Doe
Re: Android drains connected drone controller, Android's fault?	John Doe