Jun 27, 2018 · I am guessing you are using the standard firmata example and have uploaded the standard firmata to your arduino? I cannot check this right now, but I can verify I have used 2 sensors and read 2 different analogue pins in the way you are doing it here, this was a few months ago with the github master, so not 0.9.8 or 0.10.
Input/output pins on the Arduino ENGR 40M Chuan-Zheng Lee April 28, 2017 An input/output pin, or I/O pin, is the interface between a microcontroller and another circuit. It can be con gured in the microcontroller’s software to be either an input or an output. On the Arduino, this con guration is accomplished using the pinMode() function.
Measure the voltage of an analog pin relative to the analog input reference voltage on the Arduino hardware. Output the measurement as a value that ranges from 0 to 1023. If the measured voltage equals the ground voltage, the block output emits 0. If the measured voltage equals the analog reference voltage, the block output emits 1023.
Apr 17, 2020 · int buttonState = 0; // variable for reading the pushbutton status ; void setup() { // initialize the pushbutton pin as an input: pinMode(buttonPin, INPUT); } void loop() { // read the state of the pushbutton value: buttonState = digitalRead(buttonPin); // check if the pushbutton is pressed. Dec 25, 2018 · Data Direction Register – DDRx – Read Write; Port Input Pins – PINx – Read Only; Ports as General Digital I/O . The ports are bi-directional I/O ports with optional internal pull-ups. AVR I/O Detailed Block Diagram WRx, WPx, WDx, RRx, RPx, and RDx are common to all pins within the same port. clkI/O, SLEEP, and PUD are common to all ports Oct 21, 2016 · Analog input pins The Arduino UNO board has 6 analog input pins, labeled “Analog 0 to 5.” These pins can read the signal from an analog sensor like a temperature sensor and convert it into a digital value so that the system understands. These pins just measure voltage and not the current because they have very high internal resistance.