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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