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Questions tagged [frequency]

Defines how often something occurs, such as pulses in a digital signal, or oscillations in a radio wave.

19 questions with no upvoted or accepted answers
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1.7 MHz generator for a water atomizer

I'm creating a controller for a small greenhouse, I have a DHT22 for measuring and two relay module that controls heating and cooling systems, and I will use a piezo to produce humidity when it goes ...
Edgard's user avatar
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2 votes
0 answers
881 views

Measuring Amplitude/Frequency of sound

I need to read an analog signal at about 500-1000Hz for at least 5 seconds. I've a battery powered microphone wired into an analog and ground pin on my arduino and am trying to measure the frequency ...
zueses's user avatar
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2 votes
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Deceleration time logger between frequencies

i need to measure the air resistance and roll resistance of a vehicle. I plan on using a toothed disc with a proximity sensor which will output a square wave signal in to an arduino. Then I will drive ...
Woers's user avatar
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2 votes
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264 views

How can I configure the RFM95 LoRa module to emit packets at only 'one' particular frequency?

I have created a LoRa gateway using a Pi3; I have used a RFM95 module for it. So, it is a single channel gateway, and I'm operating it at 868.1Mhz. But my LoRa node(also a RFM95, on an Arduino Uno), ...
Tejas Arlimatti's user avatar
2 votes
0 answers
553 views

Arduino Audio Recorder - Speed Correct but Wrong Pitch

I'm working on an audio recorder project on an Adafruit Adalogger with SAMD21 ARM-based processor using the Arduino IDE. The desired sampling frequency is 10 kHz, 12-bit resolution with an analog ...
user avatar
2 votes
0 answers
710 views

Arduino FFT library - Open Music Labs installation help

I downloaded the zip file of the FFT library from the below link http://wiki.openmusiclabs.com/wiki/ArduinoFFT and it now as I implement the example codes, it gives out a message which says "Error ...
Abhilash's user avatar
2 votes
0 answers
480 views

How to use the timer to generate a pulse wave of the specified frequency and duty cycle

So we have the tone library, which produces a 50% duty cycle square wave of varying frequency, and analogWrite() which produces a fixed frequency wave of varying duty cycle. Is there any way to ...
3871968's user avatar
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2 votes
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Using a Hot Wheels Radar Gun with FreqPeriod library

I want to make a clone of those radar enforcement signs that look like this: I bought a Hot Wheels Radar gun that can send an analog signal to determine speed. See this thread: http://forum.arduino....
Jared's user avatar
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2 votes
0 answers
172 views

arduino mega number of simultaneous pulse inputs

I'm looking at this specification page: http://arduino.cc/en/Main/ArduinoBoardMega2560 It says there are 54 digital input pins. How many of those can be used at the same time to measure pulse input ...
coconuts4eva's user avatar
1 vote
0 answers
104 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 ...
niwran gaming's user avatar
1 vote
0 answers
76 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 ...
jay4567's user avatar
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1 vote
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FG Frequency output

I have bought the Brushless DC-Flat Motors Series 2610 and Pin number 6 is called FG which is defined as frequency output. I have plugged this pin into the Arduino in A0 and I have tried displaying ...
Ahmed Abdulla's user avatar
1 vote
0 answers
163 views

Changing frequency by button press

I have to up the frequency by 100 hz by button press for upto 1khz; I am stuck on using the debounce source code. The problem is every time I press button the value for "i" goes to random ...
Hermen Chavez's user avatar
1 vote
0 answers
565 views

How to change the update rate in TinyGPS++?

I am working with TinyGPS++ library and Arduino-nano and I want to change the update rate. I worked before with Adafruit GPS and uses the below code for updating it. // Set the update rate GPS....
Krupali Mistry's user avatar
1 vote
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246 views

Sketch works on MEGA 2560 timer2, but does not work on timer1

I set the PWM frequency on MEGA 2560 like this: TCCR2A = 0; TCCR2B = 0; TCNT2 = 0; TCCR2A = _BV(COM2A1) | _BV(COM2B1) | _BV(WGM20); ...
laoadam's user avatar
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Frequency Doesn't increase when Button Is Pressed

I’m trying to output a frequency that can be increased and decreased by using 2 buttons. I’m trying to first of all configure the first button (which increases the frequency). I’m trying to also add ...
Neamus's user avatar
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1 answer
2k views

Measuring high frequencies (300kHz) with arduino

I'm designing a frequency generator with ICL8038, which would output sine, square and triangle waves, which would reach frequency such as 300kHz. I've already designed a circuit around the ICL8038, ...
Jakey's user avatar
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-1 votes
1 answer
84 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 ...
Aivion2000's user avatar
-1 votes
1 answer
3k views

Arduino Uno & Simulink - high frequency pulses

I'm trying to control a large stepper motor with high frequency pulses (eventually around 4kHz), but what I get out of the simulink scope is super different from what the Arduino is putting out. I'm ...
mr.519's user avatar
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