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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 …

  2. adc - AREF pin on Arduino Uno R3 - Arduino Stack Exchange

    Jun 13, 2024 · On the ATmega328P (the microcontroller of the Arduino Uno), the AREF pin is initially floating. If you try to read its voltage, you can get basically anything. As soon as you …

  3. using enums in functions - Arduino Stack Exchange

    Apr 19, 2016 · I am using Visual Studio Professional 2015 and the Visual Micro add-in for Arduino, not the Arduino IDE

  4. linker - Undefined reference to function in custom library

    Mar 29, 2022 · Undefined reference to function in custom library Ask Question Asked 3 years, 8 months ago Modified 3 years, 8 months ago

  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 …

  6. analogReference(INTERNAL) configuration - arduino uno

    I need some help because I did not understand the configuration analogReference(INTERNAL). I would measure the intensity of a Laser beam passing through a filter. This is the circuit I would …

  7. 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 …

  8. Custom (external) reference voltage for ADC: is there a lower limit?

    Dec 10, 2024 · There is an internal 0.55V reference that allows operation down to 0.55V, which the lowest setting of the internal reference. Section 18 of the datasheet talks more about the …

  9. analogreference - Nature of the voltage reference instability of ...

    Jun 4, 2021 · The ATmega328P data sheet in table 29-11 on page 324 notes that the internal 1.1V reference (V BG) may vary between 1.0V and 1.2V. In this answer this is called "not …

  10. 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