Questions tagged [signal-processing]
Use this tag if your question is related to signal processing techniques (within the Arduino's capability).
98 questions
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How can I create a short (0.5us) electrical pulse (50mV amplitude)
I'm working on a charged particle detector consisting of a plastic scintillator and a SiPM to create an electrical signal and I'm using an arduino with an ADC to detect these pulses.
I'd like to ...
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How to best connect a 5V input signal to an MKR WiFi 1010?
I have a bunch of 5V signals I want to process with my MKRWiFi1010, but that only takes 3.3V max.
What is the best way to connect these signals? They are video signal (HSync, VSync and Video) where ...
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Is it possible to create a RS485 bridge over Wifi using 2 ESP07's
I've got a solar energy inverter that has a RS485 port for connecting a meter. You can place a separate energy meter in your distribution panel at home, that measures things like power usage, purchase ...
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GPS Module not catching signal
I am making a gps tracker with neo6m gps module and esp32 dev board.
I checked wiring and coding but still my module isn't catching a signal
I am already on roof of my house in case it require clear ...
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Generation of TTL Signal
I would like to generate a TTL signal using an Arduino.
As far as I understand, a TTL signal is just a predefined controlled signal that repeats at a certain interval (e.g. 2 μs).
An Arduino circuit ...
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Not registering complete rotary encoder input
I am working on a project using a Rotary Encoder and I am trying to receive the output from the encoder. As it stands I am able to get a count for degrees of change and direction of rotation, however ...
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OpenCV on ESP32 Arduino Nano
I am implementing a program on Arduino Nano ESP32: the KY-037 microphone is connected to the board and collects five seconds of analog signal. Then, an algorithm is applied to create a 128 x 128 ...
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Arduino NANO RF reciever and Digispark Attiny 85 transmitter issues
I am trying to send RF signal from Digispark Attiny 85 (this one) and receive the signal with Arduino NANO V3.0 ATmega328 (this one). Transmitter and receiver are STX882 and SRX882 (these). Library ...
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If I reduce ADC sample rate, do I get an average over the time period?
I am working with a ESP32-C3 devkit. I am using the internal ADC on that chip to read from an analog microphone. I initialize the ADC like this:
adc_continuous_config_t dig_cfg = {
.sample_freq_hz ...
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Processing doesn't respond to arduino
First of all if I make a wrong sentence this is because my main language isn't english.
I have a homework so i am trying to make a radar with Arduino IDE and Processing. I found and wrote the codes ...
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Creating an AC pulse with arduino and perhaps components
I want to create an AC PWM pulse with arduino. The microcontoller, will be also responsible for specifying the frequency (which will be around 500 Hz).
External electronic components can also be used. ...
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About the FFT library on Arduino
From the output results, i see that the arduinoFFT returns only positive frequencies, thus i think it self removes the negative sided values and compensates the lost energy by multiplying by 2. Is ...
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Transfer a single pulse from Tektronix function generator to Arduino UNO
I have set up a single pulse (width of ~400 ms) using the burst feature on the Tektronix AFG3102 function generator and I want to transfer this signal to the digital pin of Arduino UNO. Essentially I ...
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Detecting peak frequency in a microphone's output signal
I'm using a simple electrode microphone with an Arduino UNO board with the aim of detecting peak frequencies in the output signal overtime. I set the sampling rate to 1 MHz, but i can't pick up a peak ...
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Audio range with custom waveshape
I am planning to use several Arduino to produce audio range analog signals. I need to use custom waveshapes generated on the fly. As far as I understand, there are two paths:
Aquiring a DAC, but can ...
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