Questions tagged [frequency]
Defines how often something occurs, such as pulses in a digital signal, or oscillations in a radio wave.
120 questions
0 votes
2 answers
460 views
Capturing frequency using a photodiode
I've just bought the following photodiode (here) and I am trying to make a simple Arduino circuit/code so that the photodiode is able to record an LED blinking at an arbitrary refresh rate (frequency)....
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2 votes
0 answers
191 views
Using I2S MEMS microphone breakout (SPH0645) as frequency detector
Good day. I would like to ask for help regarding the code for my project. I am using an I2S MEMS microphone breakout (SPH0645) to my Arduino Nano 33 IoT. Here are my pin configurations LRCL to A2 of ...
0 votes
1 answer
58 views
Frequency problems with DIY arduino and resonator
I made a simple music program using an arduino Uno and the tone() function. It works fine. I decided to build my own circuit using a barebones AVR and upload that program. I did not know exactly what ...
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2 votes
2 answers
313 views
Tone() generates a high pitched sound when button is released
I have a simple circuit that makes use of the tone() function to produce some sounds. I also have a button, hooked with an interrupt function, that whenever is pressed, a variable changes. Sometimes, ...
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-1 votes
2 answers
239 views
Arduino 75kHz output frequency setup
i don't know how to manipulate arduino uno or mega registers and timers to be close to 75kHz output frequency. Could you help please ?
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1 vote
2 answers
4k views
Changing Frequency of PWM Pin on Arduino Uno
I am trying to change the frequency of the PWM output from an Arduino Uno R3 (Been using Pin 9) to 200 Hz with a duty cycle of 20%. This is for an ESC that is connected to a 12V motor, and I know the ...
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-1 votes
1 answer
143 views
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 ...
-1 votes
1 answer
102 views
Getting more Hz while working with 3 serial ports (IMU sensors)
im doing a university project where we use 2 IMU sensors and a SD card reader to save the data from sensors. As you will probably see from the code, we specify the sensor port we listen to, save data ...
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1 vote
0 answers
107 views
Help in Frequency Conversion in ArduinoRP2040
Having a bit of a problem with the Arduino Nano RP2040. I'm trying to use the onboard microphone to read the frequency of a sound and then use that variable for calculations. However, while I can get ...
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-1 votes
1 answer
377 views
What is the minimum sampling rate in ADC in Arduino due?
I am looking for a very low frequency application like below 300Hz. What is the minimum sampling rate in Arduino due? I am very new to this. I see in the datasheet that max sampling rate is 20MHz.
0 votes
1 answer
263 views
How to get started with writing code for a Hall Effect sensor?
One of my biggest questions concerns coding a Hall effect sensor to find wheel speed with an arduino mega. I’ve got an lcd in digital pins(7,8,9,10,11,12) and a Hall effect sensor in digital pin 2. I ...
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-1 votes
1 answer
47 views
Synchronizing an internal frequency to an external one
In this question: Procedure for changing frequency of Nano or similar, @EdgarBonet gave a very nice method of generating timings that don't divide the system clock evenly. He also said that it would ...
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1 vote
1 answer
443 views
Procedure for changing frequency of Nano or similar
I need to get interrupts at one of three specific rates: 1920, 2000, and 2400 per sec, at a fairly high precision (~10 ppm). I've asked about this on Electronics but I think here might be more ...
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0 votes
1 answer
279 views
Arduino, generating smaller frequency than 31Hz
I'm controlling a car instrument panel with Arduino using the tone() function, however with Arduino Uno's minimum 31Hz frequency I can only set the speedometer at ~12mph or more. I'd like to be able ...
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2 votes
1 answer
1k views
ATMega4809 via Nano Every marked as 20Mhz, but does this confirm it is actually at 16Mhz?
If you go to the official Arduino Nano Every page and click the Tech Specs tab, you'll see that it lists it as running at 20Mhz. Turn On Verbose Compile However, if you go into the Arduino IDE and go ...
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