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by matness
Wed Jun 26, 2019 9:12 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: I2C ignorating decimal points. MPPT solar
Replies: 2
Views: 727

I2C ignorating decimal points. MPPT solar

Hi guys! I am inside a project of building a solar MPPT with a raspberry PI. Now, I have already finished it and I am doing some tests with this solar regulator. It seems to work very well. My data system is the next: the rasp reads data from an I2C ADC (specifically, the ADS1015) which converts the...
by matness
Sun May 26, 2019 4:34 pm
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Voltage sensor gets 50 Hz noise in ADC
Replies: 3
Views: 614

Re: Voltage sensor gets 50 Hz noise in ADC

Hi and thank you for responding so fast! The resistors values are: 19.6 k and 402 k, yeah I think they are quite high. On the other hand, I think the wires connected between the voltage divider and the ADC are short enough. So, I think the problem is about the resistor values, because they take nois...
by matness
Sun May 26, 2019 7:54 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: Voltage sensor gets 50 Hz noise in ADC
Replies: 3
Views: 614

Voltage sensor gets 50 Hz noise in ADC

HI guys! How are you? I am going to explain my case. I am doing a project of a Solar MPPT using a raspberry PI 2 for my university. I almost have finished it. I have a very strange issue that I am not able to find out its origin and how to solve it. Now I will explain my situation: To try to read th...
by matness
Sun Mar 31, 2019 8:33 am
Forum: Interfacing (DSI, CSI, I2C, etc.)
Topic: I2C sample rate and delay time doubt
Replies: 0
Views: 249

I2C sample rate and delay time doubt

Hi guys! :) I have just got the ADS1015 analog-digital converter for my raspberry PI2. I have checked it, and it's working very fine. But I have the next question: In all of the python scripts to use this ADC that I found, every time that a read is made, there is an order of time.sleep(). And I do n...

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