4 Analog inputs on Atmega328p

[johnny78]

hi Guys

i was working on a project based on Atmega328p now im in the final part of it & i need to use 4 Analog inputs of it
1 : read push buttons
2 : read 2 Ntc's
3 : read the mains Voltage
& im using the internal 8Mhz oscillator
is that ok ?
can i read all of this inputs ?


thanks Guys

 

[danadakk]

Can you post a schematic with values on all components, such as R and C ?

Regards, Dana.

 

[johnny78]

Can you post a schematic with values on all components, such as R and C ?

Regards, Dana.

i will draw simple one tomorrow
would you suggest a simple program to do this ?

 

[danadakk]

Fritzing

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fritzing.org

Where to Find Free Schematic Drawing Software for Arduino, Raspberry Pi, and Other SBCs

With countless schematic makers out there, finding the right one isn't easy, especially if you want one for free.

www.makeuseof.com

Regards, Dana.

 

[KlausST]

But would you please check the Analog inputs for me ?

Hi,

honestly, I don´t know what to check for.
I don´t see a schematic, I can´t find 10k, I can´t find 100k, I can´t find pullup...

Klaus

--- Updated Oct 15, 2022 ---

would you suggest a simple program to do this ?

paper and pencil is sufficient.
It doesn´t have to be "nice", it needs to be complete and clear.

Klaus

 

[johnny78]

hi Guys
here is a schematic of the Analog section

& the code is not finished yet to read the inputs But here is what is needed

int NTC1 = A5;
int NTC2 = A4;
int NTC3 = A3;
int ReadSwitch = A2;
int MeasureVoltage = A1;
int FreePin = A0
ins NTC1Value = analogRead(NTC1);
ins NTC2Value = analogRead(NTC2);
ins NTC3Value = analogRead(NTC3);
ins PushButtons = analogRead(ReadSwitch);
ins VoltageMeasuring = analogRead(MeasureVoltage);


pinMode(FreePin,OUTPUT);
digitalWrite(FreePin,LOW);

the pin A0 isn't connected to board so is it a good idea to set it like this ?
i need your opinion about the analog inputs can i change the reading source this easy ?

thanks & regards
Johnny