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 …
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 …
esp8266 - Compile-time 'Undefined reference' error for functions ...
I'm currently working with the NodeMCU ESP12E and MPU6050 IMU using the Arduino IDE and wanted to create a project that has a .h file that declares the variables and functions. In the …
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
Function declared in another file not recognized (undefined …
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.
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 …
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 …
linker - Undefined reference to function in custom library
Mar 29, 2022 · Undefined reference to function in custom library Ask Question Asked 3 years, 9 months ago Modified 3 years, 9 months ago
Set Arduino digitalRead reference voltage
Feb 4, 2015 · 5 I wanted to know if the reference voltage for the digitalRead() function could be set to a particular voltage, either with an external reference or internally. In the Arduino …
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 …