Tagged Questions

1
vote
1answer
116 views

Reading the frequency of an AC signal using an arduino

Basically I have a motor with a magnet spinning on the end. I have a sensor that produces an AC signal when the spinning magnet is placed next to it. It produces a voltage of ±300mV. I want to measure ...
0
votes
2answers
370 views

15V 3A dc motor PWM frequency setting

What is a suitable frequency for 15V/3A DC motor? Is there any effect on the motor when the frequency is changing? I am confused with this until now and the Internet shows a lot of theory that ...
5
votes
1answer
647 views

How to control Arduino frequency?

I'm porting a code from c in the Arduino platform (I'm using an Arduino Leonardo). I wanto to remote control a camera with an IR LED. The info about the remote control want to emulate here. The code, ...
2
votes
0answers
164 views

Decoding 125kHz ASK signal [closed]

I'm looking to decode what seems to be a 125kHz ASK amplitude shift keyed signal (1 V p-p). I'm saying ASK, but it may not be the right term. It's basically a 125 kHz signal or a 1V constant voltage. ...
2
votes
1answer
705 views

Does changing PWM frequency in arduino affects SPI and I2C communication and helps controlling DC motor?

I'm using L293D based motor shield for controlling two dc-motors from Arduino Mega 2560. I use 5 and 6 PWM pin for setting speed of each motor. I have two questions: Does increasing frequency of PWM ...
2
votes
2answers
551 views

Measuring duration and distances between pulses

I want to know how it is done (or at least how would you do) to measure duration and distances between pulses on a signal in a micro controller(or a better way). Example: I have a couple of Arduinos ...
9
votes
8answers
10k views

Maximum sample rate of Arduino Duemilanove?

G'day all! I have an Arduino Duemilanove hanging around spare at the moment and thought I might try a few audio interfacing projects. I'm just wondering what sort of sampling frequency I can achieve ...
4
votes
3answers
944 views

Audio Frequency Shift Keying to Arduino

I am attempting to have an Arduino interpret an AFSK signal, this is very vague but can anyone just point me in the right direction for detecting the frequency of the AFSK signal with an arduino?