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@MSGID: 3:633/10 5990b981
@REPLY: 3:633/10 3cfc4432
@PID: PyGate 1.5.14
@TID: PyGate/Linux 1.5.14
@CHRS: CP437 2
@TZUTC: 0100
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@REPLYTO: 3:633/10 UUCP
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On 14/05/2026 18:08, druck wrote:
> On 13/05/2026 14:06, The Natural Philosopher wrote:
>> On 13/05/2026 12:12, druck wrote:
>>> On 12/05/2026 14:04, The Natural Philosopher wrote:
>>>> I measure at the far end of the chain
>>>
>>> How? Multimeter, USB power measuring dongle, oscilloscope.
>>>
>> Sigh
>>
>> The Pi PICO W has three ADCs on board and one is connected directly
>> to VSYS by a voltage divider. I transmit that data every time the
>> device successfully activates.
>
> I`m not sure I trust something to measure it`s own voltage, when it
> might be experiencing low voltage.
>
That is probably because you have not understood the first thing about
how a PI PICO W is constructed.
It has its own onboard buck/boost regulators and the ADC is driven from
a stabilised 3V line
The rest of the chip runs on a less well regulated 3.3V.
The chip runs down to 1.8V
The ADC is not set up to `measure its own voltage` but that of the
incoming voltage TO the chip.
> ---druck
--
The lifetime of any political organisation is about three years before
its been subverted by the people it tried to warn you about.
Anon.
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