Re: Pi PICO W on batteries

From	wmartin <wwm@wwmartin.net>
Newsgroups	comp.sys.raspberry-pi
Subject	Re: Pi PICO W on batteries
Date	2026-06-24 20:35 -0700
Organization	A noiseless patient Spider
Message-ID	<111i7m9$3g155$1@dont-email.me> (permalink)
References	(2 earlier) <110pjo1$jklg$1@dont-email.me> <sm0se6c8n2s.fsf@lakka.kapsi.fi> <97F*HqVJA@news.chiark.greenend.org.uk> <na2976Fn4t9U2@mid.individual.net> <111gtqv$348m3$3@dont-email.me>

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On 6/24/26 08:41, The Natural Philosopher wrote:
> On 24/06/2026 15:51, Peter Heitzer wrote:
>> Theo <theom+news@chiark.greenend.org.uk> wrote:
>>> Anssi Saari <anssi.saari@usenet.mail.kapsi.fi> wrote:
>>>> The Natural Philosopher <tnp@invalid.invalid> writes:
>>>>
>>>>> On 15/06/2026 19:49, Brian Gregory wrote:
>>>>>> nano timer ??
>>>>>> What's that then?
>>>>>
>>>>> TPL5100
>>>>>
>>>>> https://www.ti.com/product/TPL5110
>>>>
>>>> I kinda thought modern microcontrollers have this sort of thing built
>>>> in? Oh, looks like the Pico (no W) draws 2 mA in "deep sleep" and this
>>>> timer draws 35 nA.
>>>
>>> That does sound surprisingly bad for the Pico.  Seems that the RP2040 is
>>> 0.18mA in 'dormant' (ie deep sleep) and 0.38mA in 'sleep', which is a 
>>> bit
>>> better.  So must be something else on the Pico that's not so good in 
>>> sleep
>>> mode.
>> I think (ultra) low power was not a primary design goal for the Pico.
>>
> 
> I think that is very true. What attracted me was the amount of flash, 
> and ram, the availability of wireless and ADCs and the price. Less than 
> a pint of beer in a nightclub.
> Arduinos were 3 times the price
> 
> The ZeroW running debian is a damn sight easier to code for, however.
> 
Be careful about trusting that ADC, it is somewhat notorious for 
inconsistent lower bits...summing and averaging helps, if you have the 
inter-sample time to do that.

Thread

Pi PICO W on batteries The Natural Philosopher <tnp@invalid.invalid> - 2026-06-14 12:17 +0100
  Re: Pi PICO W on batteries rbowman <bowman@montana.com> - 2026-06-14 17:48 +0000
    Re: Pi PICO W on batteries The Natural Philosopher <tnp@invalid.invalid> - 2026-06-15 12:31 +0100
      Re: Pi PICO W on batteries John R Walliker <jrwalliker@gmail.com> - 2026-06-15 13:04 +0100
        Re: Pi PICO W on batteries The Natural Philosopher <tnp@invalid.invalid> - 2026-06-15 13:17 +0100
      Re: Pi PICO W on batteries "Peter Heitzer" <peter.heitzer@rz.uni-regensburg.de> - 2026-06-15 12:06 +0000
        Re: Pi PICO W on batteries The Natural Philosopher <tnp@invalid.invalid> - 2026-06-15 13:19 +0100
          Re: Pi PICO W on batteries "Peter Heitzer" <peter.heitzer@rz.uni-regensburg.de> - 2026-06-15 13:58 +0000
            Re: Pi PICO W on batteries The Natural Philosopher <tnp@invalid.invalid> - 2026-06-15 16:52 +0100
    Re: Pi PICO W on batteries mm0fmf <none@invalid.com> - 2026-06-15 12:52 +0100
  Re: Pi PICO W on batteries Brian Gregory <void-invalid-dead-dontuse@email.invalid> - 2026-06-15 19:49 +0100
    Re: Pi PICO W on batteries The Natural Philosopher <tnp@invalid.invalid> - 2026-06-15 20:28 +0100
      Re: Pi PICO W on batteries Theo <theom+news@chiark.greenend.org.uk> - 2026-06-15 20:54 +0100
        Re: Pi PICO W on batteries The Natural Philosopher <tnp@invalid.invalid> - 2026-06-16 01:59 +0100
      Re: Pi PICO W on batteries Anssi Saari <anssi.saari@usenet.mail.kapsi.fi> - 2026-06-24 09:33 +0300
        Re: Pi PICO W on batteries The Natural Philosopher <tnp@invalid.invalid> - 2026-06-24 09:58 +0100
        Re: Pi PICO W on batteries Theo <theom+news@chiark.greenend.org.uk> - 2026-06-24 13:41 +0100
          Re: Pi PICO W on batteries The Natural Philosopher <tnp@invalid.invalid> - 2026-06-24 13:53 +0100
          Re: Pi PICO W on batteries "Peter Heitzer" <peter.heitzer@rz.uni-regensburg.de> - 2026-06-24 14:51 +0000
            Re: Pi PICO W on batteries The Natural Philosopher <tnp@invalid.invalid> - 2026-06-24 16:41 +0100
              Re: Pi PICO W on batteries wmartin <wwm@wwmartin.net> - 2026-06-24 20:35 -0700
                Re: Pi PICO W on batteries John R Walliker <jrwalliker@gmail.com> - 2026-06-25 09:21 +0100
                Re: Pi PICO W on batteries The Natural Philosopher <tnp@invalid.invalid> - 2026-06-25 10:12 +0100

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