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Topic: Power Consumption (Read 1 time) previous topic - next topic

Rita

I am working on an project that requires power for these parts: sensor SHT15, RN-XV Wifly Module, CO2 Meter sensor, TSL2561 sensor,Breakout board for electred microphone, RTC (DS1307), sd card, and Wireless SD Shield.

I would like very much you to give me tips on how to calculate consumption the  my project.

Thank you in advance!

Rita

Grumpy_Mike

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I would like very much you to give me tips on how to calculate consumption the  my project.

Look up the current consumption in the data sheet of each device and add them up.

Rita


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I would like very much you to give me tips on how to calculate consumption the  my project.

Look up the current consumption in the data sheet of each device and add them up.


And do I have to consider the consumption of arduino? Just only the total current consumption of each device?

AWOL

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And do I have to consider the consumption of arduino?

Of course. It is just one of the devices.
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.

Rita


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And do I have to consider the consumption of arduino?

Of course. It is just one of the devices.


Ok... But how do I know the consumption of arduino uno?

AWOL

You could measure it.

I'd allow around 60mA for the board with nothing connected to it.
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.

Rita


You could measure it.

I'd allow around 60mA for the board with nothing connected to it.


Excuse my ignorance but I'm doing a final course work and had little electronics so I'm a bit lost! How do I measure? Using an ammeter? So I can not measure the total consumption with sensors and everything?

AWOL

Yes, just put your ammeter in series.
On some meters you need to put the probes in a different socket.
Start with the highest current range, and work downwards
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.

Grumpy_Mike

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So I can not measure the total consumption with sensors and everything?

You can but this is not what you asked, you said:-

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how to calculate consumption the my project.


Rita


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So I can not measure the total consumption with sensors and everything?

You can but this is not what you asked, you said:-

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how to calculate consumption the my project.




Maybe I have not explained well ... My objective is to size a battery and for that I need to know the total consumption (sensor + arduino) right? I've tried a battery with 7Ah but discharged last half hour ...

AWOL

You pulled 14 amps?

What the hell have you got connected?
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.

Rita


You pulled 14 amps?

What the hell have you got connected?


Connected to the arduino uno have a temperature sensor and relative humidity (SHT15), RN-XV WiFly Module, a sensor CO2 Meter, illuminance sensor (TSL2561), a electred microphone, RTC (DS1307), sd card and Wireless SD Shield. My project is to make reading of data recorded by the sensors, record them on sd card and sends them to your computer via wifi.
The battery can not be good because it is very strange that it happened ... When I calculated the consumption of sensors (considered the maximum current they consume) gave me around 80 mA, not considering the sd card (which I think is around 100 mA) or consumption of arduino!

AWOL

Wait a minute, heavy duty D cells are rated up to 14Ah, but only for tiny currents.
What sort of battery were you using?
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.

Rita


Wait a minute, heavy duty D cells are rated up to 14Ah, but only for tiny currents.
What sort of battery were you using?



The battery used was a Diamec DM 12-7; 12V7AH/20HR. It is a battery acid.

Datasheet: http://diamec.com.hk/PublishWebSite/Manton/gallery/26b696ac-cbc9-4249-9027-dabfa83f8b63.pdf

AWOL

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Max discharge rate for 5 secretary

?   :smiley-eek:
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.

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