On 15/06/2026 19:49, Brian Gregory wrote:On 14/06/2026 12:17, The Natural Philosopher wrote:The process of debugging my remote oil level sensor continues. This isnano timer ??
based on a PICO W plus a nano timer to wake it up every couple of
hours to send a message via the home wifi.
What's that then?
TPL5100
https://www.ti.com/product/TPL5110
It's disappointing that it's not available in a higher voltage version
since, as you say, it needs to be directly connected to the battery.
I suppose one workaround would be to use a single lithium ion cell to give
you down to 3V and then a boost converter which you only run when the
CPU is operating. Timer goes off, boost converter spins up to power your
CPU at a stable 5V (or whatever), then CPU tells it shut off again once
done.
That's likely going to take more power than just running directly off
battery, but the flipside is you can install several 18650 cells in parallel
if you want to get more capacity.
The primary lithium AAs aren't a terrible option though, especially if you
are more likely to be killed by self-discharge of the battery than by your
own load.
Theo
| Date | Sujet | # | Auteur | |
| 14 Jun 26 |  Pi PICO W on batteries | 23 | The Natural Philosopher | |
| 14 Jun 26 |  Re: Pi PICO W on batteries | 9 | rbowman | |
| 15 Jun 26 |  Re: Pi PICO W on batteries | 7 | The Natural Philosopher | |
| 15 Jun 26 | Re: Pi PICO W on batteries | 2 | John R Walliker | |
| 15 Jun 26 |   Re: Pi PICO W on batteries | 1 | The Natural Philosopher | |
| 15 Jun 26 | Re: Pi PICO W on batteries | 4 | Peter Heitzer | |
| 15 Jun 26 |  Re: Pi PICO W on batteries | 3 | The Natural Philosopher | |
| 15 Jun 26 | Re: Pi PICO W on batteries | 2 | Peter Heitzer | |
| 15 Jun 26 | Re: Pi PICO W on batteries | 1 | The Natural Philosopher | |
| 15 Jun 26 | Re: Pi PICO W on batteries | 1 | mm0fmf | |
| 15 Jun 26 | Re: Pi PICO W on batteries | 13 | Brian Gregory | |
| 15 Jun 26 | Re: Pi PICO W on batteries | 12 | The Natural Philosopher | |
| 15 Jun 26 | Re: Pi PICO W on batteries | 2 | Theo | |
| 16 Jun 26 | Re: Pi PICO W on batteries | 1 | The Natural Philosopher | |
| 24 Jun07:33 | Re: Pi PICO W on batteries | 9 | Anssi Saari | |
| 24 Jun09:58 | Re: Pi PICO W on batteries | 1 | The Natural Philosopher | |
| 24 Jun13:41 | Re: Pi PICO W on batteries | 7 | Theo | |
| 24 Jun13:53 | Re: Pi PICO W on batteries | 1 | The Natural Philosopher | |
| 24 Jun15:51 | Re: Pi PICO W on batteries | 5 | Peter Heitzer | |
| 24 Jun16:41 | Re: Pi PICO W on batteries | 4 | The Natural Philosopher | |
| 25 Jun04:35 | Re: Pi PICO W on batteries | 3 | wmartin | |
| 25 Jun09:21 | Re: Pi PICO W on batteries | 1 | John R Walliker | |
| 25 Jun10:12 | Re: Pi PICO W on batteries | 1 | The Natural Philosopher |
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