The analog-sampling tag has no usage guidance.
2
votes
2answers
51 views
ADC with better performance
I need to sample voltage at a very high rate (say for like 10000 Hz) and with a very good precision(at least 10-12 bit ADC will do). So I am in need of an Analog-to-Digital Converter(ADC) which has a ...
0
votes
1answer
51 views
Amplified piezo sensor wiring problem
I am trying to amplify the signal from an Adafruit Small enclosed piezo. The piezo is working using the Arduino Knock example but I want to increase the sensitivity using an amplifier. The wiring ...
1
vote
3answers
110 views
AC meter By ADC timer interrupt from Nick Gammon
I want to read ADC from the pin A0 and A1. I have written in this code, however.
I took this code came from Nick Gammon
Thank You
///////////////////////////////////////////////////////////////////...
1
vote
0answers
70 views
Using Analog Comparator on Uno to Read Differential Voltage Signaling
I am trying to use the Arduino Uno to read an AVCLan bus on a Toyota vehicle. Logic 0 is when +/- drive are 120mV or more apart, and logic 1 is 20mV or less. See Toyota AVC-Lan description.
I ...
1
vote
1answer
33 views
Is possible to process analogue inputs with variation frequencies in MHz?
Is it possible for Arduino boards to accurately process analog inputs that vary at MHz frequencies?
If possible, which Arduino board would be most appropriate for such application?
What ...
0
votes
1answer
78 views
Sampling rate of analog read
I have a simple following analog reading code:
void setup()
{
// initialize serial comms
Serial.begin(9600);
}
void loop()
{
// read A0
int val0 = analogRead(0);
int val1 = analogRead(1);
...
1
vote
1answer
75 views
Audio sampling and serial communication
tl;dr: The sample rate of my code seems to be lower than what I expect it to be. How can I fix this?
Director's cut:
I am trying to sample audio data and send it via serial. The setup consists of a ...
1
vote
1answer
47 views
how do you capture the top value in a fallen edge in analogs data (flex sensor)
Guys i'm working with a flex sensor and I'm trying to capture a specific value which is the moment before the user lets go of a flexed flex sensor and its represented as the top point of a falling ...
0
votes
1answer
57 views
How to interpret analog values sent to Arduino from line scanner?
So I have a line scan camera attached to my Arduino Mega and I'm trying to send it a digital clock impulse and get an analog output back. The line scan camera is supposed to return 128 pixels.
So far ...
1
vote
1answer
77 views
Digital input pin voltage treshold (voltage to register 1 or 0)
I was thinking of using multiple analog light sensors (variable resistance by light), but basically I only need to know if there is "a lot of light" or "not a lot of light". And would like to use ...
0
votes
1answer
56 views
Sampling Rate of Arduino Uno
It might be a stupid question but, I am currently using Arduino Uno with the 16MHz processor, what is maximum sampling rate of data available to me if I want to read data of a sensors such as ...
0
votes
1answer
233 views
Help with a rather specific implementation of FFT Library?
So, I guess what I'm trying to do here is properly understand the FFT library posted here by Open Music Labs, done in C++. I believe I understand the Fourier transform, but the FFT has some nuance ...
1
vote
3answers
153 views
Integration of signal
In my house, I have a low voltage AC signal (0-10V) that is proportional to the amount of current that is drawn at any moment (or as it is presented: kW) (europe, 50Hz). Presently, it is just shown as ...
1
vote
1answer
31 views
Analogue input 0 staying at 0 when sensing light with Arduino and a photocell
I am doing a circuit for capturing light intensities.
I followed the tutorial provided by Adil Moujahid
Yet, when I plug the jumper wires on 5V the circuit stops working and when I plug on 3.3V the ...
3
votes
1answer
814 views
Arduino Due: Interrupt-based ADC hangs processing
I am trying to build an oscilloscope using an Arduino Due and an LCD. I have the LCD running perfectly and started working on using the ADC peripheral to sample signals. Here's what I have so far:
#...
1
vote
2answers
3k views
Connect HX711 to a three wire load cell
I have the following load cells:
I'm using the following HX711 amplifier
Every guide i can find on the internet describes how to connect a load cell with four wires to the amplifier. How can i ...
0
votes
1answer
454 views
Getting values from multiple thermistors - one value glitches all over the place
I have a circuit with preferably long wires that get data from thermistors. The Arduino sends this data (formatted in JSON) to a web server where it can be collected by another program.
Some of these ...
0
votes
1answer
99 views
Arduino Uno - Analog Circuit Simulator
I control an analog circuit with Arduino Uno. I want to simulate an Arduino Uno with operational amplifiers (741). Can I simulate Arduino with SPICE?
0
votes
0answers
452 views
Arduino Micro + Max4466 - Noise on A0
I've got an Arduino Micro, and a MAX4466 ECM / AMP breakout board (https://www.adafruit.com/product/1063). I'm powering the Arduino Micro from the USB port.
On the MAX4466 (to the Arduino), I've ...
1
vote
3answers
368 views
Can do I make an Arduino program that can decipher telephone touch tones?
I have an old land line phone that I want to connect to my Arduino. Then I would like to write a program that can decipher the touch-tone button presses (which are a combination of two tones) so that ...
-1
votes
1answer
200 views
0-1 V input to 0-5 V Output
We have an instrument that has analog output of 0-1 volts and we need to convert this to 0-5 volts. What is the best op amp to use for this and how should the resistors be set up? Any help would be ...
0
votes
1answer
55 views
Arduino AD-converter tolerance
I created a quite simple Arduino sketch:
void setup() {
Serial.begin(9600);
}
void loop() {
int sensorValue = analogRead(A0);
Serial.println(sensorValue);
float voltage = sensorValue * (5 ...
