Questions tagged [adc]
Analog Digital converter
197 questions
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Arduino Nano ADC input selection
The maximum ADC sample rate for the '328p, using the default prescaler of 128, is given as roughly 10000 samples per second. Maybe I've missed it, but I can't see whether that is the total rate for ...
- 269
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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 ...
- 11
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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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Custom (external) reference voltage for ADC: is there a lower limit?
I'm reading an analogue oxygen sensor (SGX-4OX) with a Nano Every (ATmega4809-based). We're seeing up to about 60mV* in ambient air (it will reduce as we purge with nitrogen), and the ADC is 10-bit. ...
- 168
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AREF pin on Arduino Uno R3
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So then, AREF can only output a voltage when used by the ADC, but not when used by the AC.
That is what I sense all your answers are pointing at, yet none has it black on white. My questions ...
- 136
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Deciphering AD7730 outputs
I am currently working with a AD7730 chip for analog-digital conversion. The chip is programmable, and I have been pulling code from GitHub as well as other links.
I am unfamiliar with SPI (the ...
- 119
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Reading from Analog Mic and Transmitting over BLE (Nano 33 BLE)
I'm trying to read from an analog mic with a sampling frequency of 10 kHz and transmitting the data over BLE on Arduino Nano 33 BLE Sense Rev 2. The MCU reaches that sampling rate with no problem but ...
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Why does the ADC report 0 in this sketch?
This sketch always reports 0 for the ADC reading.
I think this is going to turn out to be something silly, but I cannot find the source. I've reviewed the sketch ADC lines carefully and they seem ...
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Microcontroller freezes when triggering the gate of an N-channel MOSFET
Disclaimer: I have asked questions about this project before but this is yet another issue I'm facing.
What I really want to do: Build a battery powered device with 6 colored buttons. When you press ...
- 191
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How to properly read ADC on an ATtiny85? [closed]
What I want to do: attach six buttons to a single input. Each button triggers a different action.
How I want to do it: Use an AD conversion and add a resistor with different values to each button so ...
- 191
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Hysteresis and scaling range
Here I asked about how to add an hysteresis on ADC readings. The answer received was very good and it worked out of the box.
Still I'm having troubles trying to generalize the resample function in ...
- 393
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Avoid 1-LSB noise on ADC readings
I have a potentiometer connected to an ADC input of an Arduino Leonardo.
The ADC resolution is 10-bit (0..1024), while I need just 7-bit (0..127).
I use a simple filter to reduce the noise and then a ...
- 393
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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 ...
- 101
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Using 1.1Vf to read stable battery voltage and sensor voltage
After several tries, i was successful with reading stable battery voltage using internal voltage reference of 1.1v, now the issue i face is that i cannot read stable sensor voltage, could you please ...
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AD7768-1 library " Arduino "
I am working on a project and I need an AD7768-1 library to make this analog-digital-converter talk to my Arduino using SPI.
" The AD7768-1" doesn't exist in Arduino's library.
Thanks in ...
