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DesconBelgrade / Klimerko

☁ DIY Air Quality Monitoring Device
https://klimerko.org
GNU General Public License v3.0
114 stars 21 forks source link

Using batery #18

Closed nexbg closed 3 years ago

nexbg commented 3 years ago

Hi everyone,

Did anyone used autonomous energy source like battery to supply station with power. I do not have electricity source outside, and trying to find way to make it easy.

BR, Nemanja

epiller commented 3 years ago

Hey, due to the linear power regulation circuit on the NodeMCU and the fact that PMS7003 requires 5V to operate (because of the fan), efficient battery powered operation isn't something that could be done well without creating a custom circuit board. What I suggest is that you use a power bank, but don't expect long runtime - I'd guesstimate around 2-3 days.

batica81 commented 3 years ago

Depends on the bank of course. I tried with a small one with two 18650 cells and that lasted about one day.

On Thu, Feb 4, 2021 at 12:56 PM Vanja notifications@github.com wrote:

Hey, due to the linear power regulation circuit on the NodeMCU and the fact that PMS7003 requires 5V to operate (because of the fan), efficient battery powered operation isn't something that could be done well without creating a custom circuit board. What I suggest is that you use a power bank, but don't expect long runtime - I'd guesstimate around 2-3 days.

— You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub https://github.com/DesconBelgrade/Klimerko/issues/18#issuecomment-773253141, or unsubscribe https://github.com/notifications/unsubscribe-auth/AB46YYMJYQILJCTWBPZBPSDS5KDN7ANCNFSM4XCTVYIA .

nexbg commented 3 years ago

Thanks! So, power bank with solar panel can be good solution actually. :)

On Thu, Feb 4, 2021 at 1:01 PM Vojislav Ristivojevic < notifications@github.com> wrote:

Depends on the bank of course. I tried with a small one with two 18650 cells and that lasted about one day.

On Thu, Feb 4, 2021 at 12:56 PM Vanja notifications@github.com wrote:

Hey, due to the linear power regulation circuit on the NodeMCU and the fact that PMS7003 requires 5V to operate (because of the fan), efficient battery powered operation isn't something that could be done well without creating a custom circuit board. What I suggest is that you use a power bank, but don't expect long runtime - I'd guesstimate around 2-3 days.

— You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub < https://github.com/DesconBelgrade/Klimerko/issues/18#issuecomment-773253141 , or unsubscribe < https://github.com/notifications/unsubscribe-auth/AB46YYMJYQILJCTWBPZBPSDS5KDN7ANCNFSM4XCTVYIA

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-- Nemanja Stamencic PMP Cell: +381641570067 Mail: nemanja.stamencic@gmail.com Web: www.stamencic.net Twitter: @stamencic Ln: http://rs.linkedin.com/in/nemanjastamencic

epiller commented 3 years ago

Thanks for the input @batica81. I would also like to add that the firmware isn't optimized for battery powered operation, in a sense that NodeMCU isn't going into low-power state at all. This could be implemented but would require a whole bunch of changes, a lot of testing and a hardware change (two pins on the NodeMCU would need to be connected to each other in order to enable waking up from deep sleep).