Questions tagged [dac]
A digital-to-analog converter (DAC) is a system that converts a digital signal into an analog signal.
12 questions
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Why are there extra steps on DAC output?
Testing the DAC on the Feather M4 Express (SAMD51 microcontroller). Tried to generate a square wave with the DAC.
void setup() {
analogWriteResolution(12);
}
void loop() {
analogWrite(A0, 0);
...
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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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ESP-C3 Super mini MAX98357A and SD Card Reader together
After a lot of research and minimum results about pin mapping and particular specific configurations for SPI and I2S on ESP-C3, i about to give up on this.
I have recently bought ESP32-C3 Supermini ...
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1
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Generate a sine wave with a predefined frequency and amplitude via DAC0 or DAC1 with Arduino Due
Good Morning to everyone,
I am a PhD Student in experimental fluid mechanics at the University of Naples "Federico II", Italy. I am working on Arduino Due card and i am novel in applications ...
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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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Proper wiring for a HiLetgo DAC to Arduino
I have been having trouble finding any recourses for a DAC chip that I bought. It is the HiLetgo PCM5102 DCA.
https://www.amazon.com/gp/product/B07Q9K5MT8/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&...
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2
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1
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Fast PWM: Resolution in hertz
I am trying to get a nice sounding varying PWM to DAC, and intend to use a Sallen Key as part of an active low pass filter.
I set the Fast PWM at a max of 255 (WGM1[0-3] = 5) and set/clear OC1A upon ...
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Using ESP32 to measure vbat
I'm using ESP32 to read an analog value of a liPo battery (3.7v-4.2v).
Since ESP32 DAC's is 3.3v I'm using a voltage divider ( 2x10K resistors ), to split bat's voltage into ESP's GPIO36. So far ...
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Multiple variant.cpp entries for same physical pin
Some variant.cpp files have more than one entry that points to the same physical pin. For example (from Arduino Zero's file):
// 14..19 - Analog pins
// --------------------
{ PORTA, 2, PIO_ANALOG, ...
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Arduino and DAC
this might be more general electronics question, forgive me if this is not the correct place to ask.
I am atempting to use the arduino and MCP4725 breakout board to inject 4 different voltages into ...
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MCP4725 I2C address
I want to use four of MCP4725 DAC module at the same time but it only has two I2C addresses which can be set via jumpers:
In page 10 of the datasheet it says:
Device Address Selection pin. This pin ...
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Creating a sine wave with a DAC and feeding it back
I want to produce a digital sine wave, send it to DAC0, and then receive it back as input on A0 and plot the graph. I am using an Arduino Due. I wrote the following code:
#define maxSamplesNum 120
#...
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