Hydroponic monitoring project using solar panels?

Other Hardware Science and Measurement
1

hello everyone, i'm a newcomer here. have a good day.
i just started my first arduino uno project.
At this point, I will start a hydroponic monitoring project using solar panels. The solar panel will also be used to turn on the 12v 8w dc water pump for 1.5 hours per day and the monitoring will use 2 sensors, namely pH and TDS sensors which will be used for 24 hours.
The following solar panels I use: 10 wp capacity solar panels with 12 volt 7.5 Ah battery storage as a power supply. I have a few questions:

  1. Using a 10wp solar panel and a 12 volt 7.5ah battery can I run my arduino uno all day with 2 sensors plus a 12v 8w water pump for 1.5 hours?
  2. how much power consumption arduino uno per day with these sensors?

thanks, I hope someone can explain to me. pardon my english.

2

@rendybaihqi007,

Your other topic on the same subject deleted.

Please do not duplicate your questions as doing so wastes the time and effort of the volunteers trying to help you as they are then answering the same thing in different places.

Please create one topic only for your question and choose the forum category carefully. If you have multiple questions about the same project then please ask your questions in the one topic as the answers to one question provide useful context for the others, and also you won’t have to keep explaining your project repeatedly.

Repeated duplicate posting could result in a temporary or permanent ban from the forum.

Could you take a few moments to Learn How To Use The Forum

It will help you get the best out of the forum in the future.

Thank you.

3

The Uno will use about 40mA. That's near 1Ah per day. But this can be reduced to maybe 10mA by putting the Uno into sleep mode for as much of the time as possible. It can wake every few seconds or minutes to check the sensors and switch the pump on/off.

Other types of Arduino can be much more efficient than Uno. Must you use Uno?

12V, 8W is 667mA. For 1.5 hours, that's another 1Ah each day.

Your 7.5Ah battery will last 7.5 / 2 = 3.25 days from fully charged. To keep the battery from discharging, the panel will need to generate 2Ah per day.

The panel's peak power is 10W. That will only be generated for a few hours around noon if the panel is mounted correctly and the sky is cloudless. On average, if the sky is cloudy 50% of the time, it will generate only perhaps 2.5W. That is around 200mA at 12V. Over a 12 hour average day, that's 2.5Ah.

So using those crude estimates I think you might be ok. I would go with a 20W panel if you can.

4

i beg your pardon, sir.

5

Thank you sir.
if the uno uses 2 sensors, namely the pH sensor and the TDS sensor, how much power will it consume?

6

It will consume 40mA plus the current for the 2 sensors.

7

with a 10 wp solar panel with a 7.5 ah battery, can run the arduino and these 2 sensors all day long?
because I need to read sensor data in real time.

8

It depends how much current the sensors use.

9

Thank you sir, I hope your answer can help my project.

10

How real time do you mean? Or more specifically, how often do you plan to read them? I wouldn't expect much variation minute to minute for example.

12

sorry sir, I mean real time is for 24 hours.

13

You want to read the sensors one time in each 24 hours?

14

I hope that also. But the answers I can give are limited by the information you provide.

15

Is marihuana involved here ?