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  1. what is aref (analog reference) - Arduino Stack Exchange

    Jul 4, 2017 · It is the reference voltage against which all other analog voltages (analog inputs) are measured against. By default it is the same as the chip supply voltage (5V on most Arduino boards), …

  2. Function declared in another file not recognized (undefined reference to)

    Jul 28, 2020 · The Arduino IDE (and I guess arduino-cli behaves the same) will try to link into your project every source file that lives in the same forlder as the main .ino file.

  3. programming - Call by reference - Arduino Stack Exchange

    I am trying to learn 'call by reference'. I want to call a function fcn1 from the main loop and pass a reference of the local variable var to the function fcn1. Next step is to call a second function

  4. Analog Reference and Power Voltage - Arduino Stack Exchange

    Sep 10, 2014 · However, this is probably assuming the Arduino is running at 5 volts. If one powers the board with, say 4 volts, will the analog reference still be 5 volts default, or changed to the input …

  5. what is arduino adc reference? - Arduino Stack Exchange

    Dec 15, 2017 · I'm using arduino for the first time and don't really understand what am I suppose to plug to the ADC refernce PIN... or if I even have to use it while plugging analog sensor to the arduino, …

  6. Arduino protecting analog input with internal voltage reference

    The circuits aims to accept a 0-10V input and read it with the internal reference voltage 1,1V. The question is the following: Assuming I want to use a 2,2V zener diode as overvoltage protection and …

  7. class - "undefined reference to" - C++ - Arduino Stack Exchange

    Hi fellow programmers, I started to program Arduino a little deeply and popped out the following error when I was writing a class to read the pulses of a Hall effect ...

  8. How can I seriously calibrate ADC voltage readings with Arduino Nano?

    Only 10 readings for an average is a small number. Sometimes I use 5, sometimes I use thousands. Is the Arduino Nano used indoors, with only a small variation in temperature ? Then select the …

  9. data type - arduino - millis () - Arduino Stack Exchange

    Mar 6, 2015 · Copied from the Arduino reference - millis() Tip: Note that the parameter for millis is an unsigned long, errors may be generated if a programmer tries to do math with other datatypes such …

  10. linker - Undefined reference to function in custom library - Arduino ...

    Mar 29, 2022 · Undefined reference to function in custom library Ask Question Asked 3 years, 10 months ago Modified 3 years, 10 months ago