What arduino should i use?

Projects General Guidance
1

Hi all,

I have some questions about arduino models and what is more sitable form my project.

so, i have to implement a device to include a temperature sensor(DS1820), microphone (we want to analyse the frecuency) (ICS43432), weight (4 gauges).

We are thinking to put arduino UNO o NANO. What do you think guys?

I appreciated your help

2

What frequencies do you want to analyze?

All the other tasks are easily within the scope of an Uno or Nano - both of which use the Atmega 328 microprocessor.

However without knowing exactly what sensors you want to use it is impossible to know how many I/O pins are required. I more I/O pins are required a Mega may be a better choice.

...R

3

Hello @Robin2,

In reference to your questions,
What frequencies do you want to analyze?

The requeriments are 20Hz to 20kHz.

To be more specific:

Temperature DS1820
microphone ICS43432
Weight 4 gauges sen-10245 with an amplifier Hx711

what dou you think?

ds1820.pdf (154 KB)

ICS-43432_DS.pdf (438 KB)

loadsensor.pdf (34.9 KB)

hx711_english.pdf (160 KB)

4

The ADC in the 16MHz Arduinos (Uno, Mega, Leonardo) can only do about 15,000 samples per second at max resolution and up to 76,000 at lower resolution so I suspect they would not be capable of the frequency analysis.

And it could be that when working at a high sample rate there would not be spare capacity for other tasks.

A RaspberryPi might be better for that part of the project. It may be able to do the other tasks as well.

...R

5

Spartan_001:
We are thinking to put arduino UNO o NANO. What do you think guys?

No I2S audio with those boards.
I2S will put you into a realm where there is not much support (yet) available.
I hope you already have a solid programming base before you decide to go there.
Leo..

6

Wawa:
No I2S audio with those boards.
I2S will put you into a realm where there is not much support (yet) available.
I hope you already have a solid programming base before you decide to go there.
Leo..

some alternative that can be easier to implement?

Robin2:
The ADC in the 16MHz Arduinos (Uno, Mega, Leonardo) can only do about 15,000 samples per second at max resolution and up to 76,000 at lower resolution so I suspect they would not be capable of the frequency analysis.

And it could be that when working at a high sample rate there would not be spare capacity for other tasks.

A RaspberryPi might be better for that part of the project. It may be able to do the other tasks as well.

...R

Okey i take a look on raspberry pi