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Questions tagged [signal-processing]

Use this tag if your question is related to signal processing techniques (within the Arduino's capability).

19 questions with no upvoted or accepted answers
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2 votes
0 answers
162 views

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 ...
Le_Peck's user avatar
  • 21
2 votes
0 answers
2k views

read with Arduino SSI encoder signal

I'm stuck in my project, I try to read an absolute encoders angular position with my Arduino. I used and cabled a differential line receiver and driver between Arduino and the encoder, like explained ...
ian's user avatar
  • 21
2 votes
0 answers
780 views

3 square wave pulse by 120° phase shift and 3 inverted of each by Arduino

I want to make a three phase inverter (DC to AC) bridge type using Arduino. For that I want to generate three square wave each is 120° phase shifted and other three waves of main three wave forms ...
user110079's user avatar
2 votes
0 answers
547 views

Which components to built remapping keyboard via USB in + out (remapped)

I know that it's fairly easy to change the emulate keyboard and mouse by Arduino. But I'm quite specific about the goal I would like to achieve hence I would appreciate if you could advise me which ...
Kamil's user avatar
  • 121
1 vote
0 answers
66 views

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 ...
Nikan's user avatar
  • 11
1 vote
0 answers
48 views

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 ...
huhu roro's user avatar
1 vote
1 answer
852 views

Communication between two Arduinos using ENC28J60?

How can I connect and send data between two Arduinos using ENC28J60 ethernet adapters on both of them? Is there any guide or example code for me to take a look from or any library I can use to achieve ...
rohithrathod banoth's user avatar
1 vote
0 answers
63 views

line following IR sensor not giving readings at 3m wire length?

I am using line following IR sensor with arduino mega. I need the sensor 2-3m away from arduino since the length of rover is 2m (sensor front & motor back). However, I cannot get accurate analog ...
suu's user avatar
  • 85
1 vote
0 answers
191 views

ultrasonic phased array

I have the following code for Arduino mega to output 40 kHz square waves at the analog pins. I need to apply specific phase delays for the signals at each pin though and am struggling to find out how ...
Marion's user avatar
  • 11
1 vote
0 answers
293 views

Best approaches to reading a high-count quadrature encoder?

I have a 24v servo motor coupled to a 2,000 segment optical encoder that runs on 5v. That's 2,000 "ticks" per revolution at it's base resolution. (Full quad reading allows 8,000 ticks per revolution, ...
111936's user avatar
  • 19
1 vote
0 answers
42 views

Signal reading from existing snackmachine

So - i started a project at my civil-service. I want to fill a old snack-machine with things we need in the ambulance (bandages, cool-packs, etc.) In order to get the current amount of everything ...
CozyPaw's user avatar
  • 11
1 vote
0 answers
201 views

Decoding RF Signal

I have a motorized curtain and I'm trying to understand its rf control signal in order to control it from my arduino. I got the times, and checked the code is not static. I believe it has some kind ...
BrunoAraujo's user avatar
1 vote
0 answers
550 views

Configuring Timers to Add One More 50kHz Square Wave

I am generating two 50kHz square waves, but I would like to generate three square waves. I have problems with generating the third square wave. Basically, I need to configure the timer bits so that I ...
Bogdan Raspopin's user avatar
1 vote
0 answers
501 views

arduino + mpu6050 + nrf24l01 >>>>>>>>>>>>nrf24l01 + arduino ( Not running fluently)

this is my setup: I have an arduino uno + mpu-6050 + nrf24l01 all attached together and am transmitting data from that mpu-6050 to another arduino with an nrf24l01 attached to it. I got the arduinos ...
Eduardo Cunha's user avatar
0 votes
1 answer
88 views

Not registering complete rotary encoder input

I am working on a project using a Rotary Encoder and I am trying to recieve the output from the encoder. As it stands I am able to get a count for degrees of change and direction of rotation, however ...
Shai Morrison's user avatar
0 votes
0 answers
99 views

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 ...
Alice's user avatar
  • 31
0 votes
0 answers
499 views

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 ...
أيمن الفحصي's user avatar
0 votes
0 answers
3k views

Reading TCD1304 linear CCD Sensor

I want to read the TCD1304 linear CCD sensor with an ESP32 and I'm facing some problems. As a first "warm-up" and to get familiar with this sensor I tried to generate the sensors input ...
Sim Son's user avatar
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0 votes
0 answers
73 views

With what can I replace this for loop so my Arduino doesn't spit jibberish?

I have this: for (int i = 0; i < (DELAY_SIZE - 1); i++) { if (check_tag_in_char(delay_chars[i], BOOK_UPLOAD_END_TAG)) { tag_pos = 0; Serial.println("Uploaded"); ...
JingleBells's user avatar