[Ovmsdev] Modem LED control?

Michael Balzer dexter at expeedo.de
Thu Dec 21 16:44:55 HKT 2017


Mark,

thanks for the clarification, confirmed. I thought it's got the same function as on the SIM908 / 808.

Btw,

    simcom cmd AT+CGFUNC=1,0

can be used as well now.

Regards,
Michael


Am 21.12.2017 um 04:25 schrieb Mark Webb-Johnson:
> I think that this can control it (on SIM5360):
>
>     Disable:
>     simcom muxtx 3 AT+CGFUNC=1,0
>
>     Enable:
>     simcom muxtx 3 AT+CGFUNC=1,1
>
>
> There is also AT+CLEDITST, but I can’t seem to make that work.
>
> Black case should be darker and let light through. The 3D printed prototypes are very transparent.
>
> Regards, Mark.
>
>> On 19 Dec 2017, at 3:37 PM, Michael Balzer <dexter at expeedo.de <mailto:dexter at expeedo.de>> wrote:
>>
>> Greg,
>>
>> the blue LED is not controllable, it's acting as a Zener diode in the voltage regulation, i.e. it flashes when draining a too high voltage.
>>
>> So, as a workaround you could replace it by a standard Zener diode, just needs to have the same breakdown voltage.
>>
>> But I don't think the black case lets through much light -- Mark?
>>
>> Regards,
>> Michael
>>
>>
>> Am 19.12.2017 um 05:47 schrieb Greg D.:
>>> Hi folks,
>>>
>>> The "real" module's case is black, but how well does it block light?
>>>
>>> I'm thinking about the modem's LED, which flashes pretty brightly in the
>>> proto (white) case.  In a dark parking lot, it could attract unwanted
>>> attention.  (Or, perhaps simulate a car alarm, which wouldn't
>>> necessarily be bad...)
>>>
>>> If the LED is visible externally, is there a way to disable it?
>>>
>>> Greg
>>>
>>>
>>>
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>>
>> -- 
>> Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
>> Fon 02333 / 833 5735 * Handy 0176 / 206 989 26
>>
>>
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>
>
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-- 
Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal
Fon 02333 / 833 5735 * Handy 0176 / 206 989 26

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