Questions tagged [analog]
Electronic devices with a continuously variable signal. The term "analogue" describes the proportional relationship between a signal and a voltage or current that represents the signal.
46 questions
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What does VRx stand for in the KY-023? [closed]
The x and y axis pins on the KY-023 are labeled VRx and VRy, but I'm curious as to what they stand for, as I couldn't find any official statements about it. I assumed it was "Variable Resistor X/...
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Arduino DUE - I Have enabled A14, will this break anything?
I developed a quick custom PCB using the ATSAM3X8EA-AU as I wanted to use Arduino to program it as an Arduino DUE, I kept most of the schematic the same, however I used pin A14 pin 52 as an analog ...
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ESP32 pressure sensor readings (RFP602)
I have two RFP602 sensors that I use.
One connected to GPIO2, the other to GPIO4, each connected to a 1Mohm resistance.
The sensor connected to GPIO2 reads the data how I want it, I have to press a ...
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1
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How to use ESP12F analog pin to read battery voltage?
I'm using an ESP12F microcontroller powered by a 3.7V battery.
What I want is to get actual information about the battery's state of charge. So to know when the battery needs to recharge.
To achieve ...
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3
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Confusing Pinouts on MH-ET ATTiny88
I am a little bewildered about the analog pins on the Arduino ATTiny88.
First of all, am I correct in thinking the functions analogRead() and analogWrite() can use either the string A0 - A7 or a ...
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2
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145
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How does actually arduino measure voltage?
I am not interested into the AnalogRead() part, but rather on how he converts 5 or 2 V into a number between 0 and 1023. How does it practically do it to convert the voltage level into a number or ...
4
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1
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Issues using mini microphone module off AliExpress
I have been trying to get a mini microphone module with an inbuilt microphone module I got from AliExpress to my Arduino to confirm if it is working. It was a four pin microphone with pins labeled V, ...
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1
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Controlling a servo without the servo library
I am trying to control a servo without the "Servo.h" library.I am sending using analogWrite() some values to the servo.I know the servo takes input a continuous time signal however I dont ...
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1
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Why is my analog output limited to 2.7V?
I have an MKR WIFI1000 (v2.0 [Arduino:XYZ]) with a "real" analog output pin (DAC0/A0/PIN15). According to the documentation, this is a 10 bit DAC, so I assume I can write analogWrite(15, ...
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2
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AD8232 - Measuring heart rate only if USB connector is touched. Grounding issue?
TL;DR
I can read out my heart rate but I have to physically touch GND of the Arduino or else the signal is just noise.
Description
So I've started to play around with an Arduino and wanted to try out ...
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How to connect Draw wire encoder to Arduino Uno?
Hello Stack Community,
I am new to Arduino, and I am trying to figure out how to connect a draw wire encoder to Arduino and collect data from it.
I have attached a link of the product that I currently ...
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1
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230
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Obtaining wrong analog readings using the ESP32 devkitc v4
I know that the topic is not related to Arduino, but I am completely sure that someone can help me find the problem.
I am testing 6 temperature sensors, (3 digital, 3 analog). The digital ones are &...
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1
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Why use multiple filters output thousands value, use one or two filter can output normal value?
Problem
If the loop runs only one simulated pin and uses a filter, it will output normally (analog 1600~2200, filter 0~500), but creating an array to store multiple filtered simulated pin values will ...
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Using Analog Pins for Power
I'd like to power something needing 5V DC using the Arduino Uno analog pins. Specifically, I'm following the "Fun Plug-in Hack for Arduino UNO" section of this Adafruit tutorial. It states:
...
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ESP32 WROOM32E w/ Arduino IDE 2axis joystick - how do I get a good reading?
How do I get the full range of motion from an analog joystick and the ESP32 WROOM32E using the Arduino IDE with esp-idf installed?
Using a 2 axis analog joystick, the 5v/3.3v pin, ground pin and the ...
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