Tagged Questions

8
votes
5answers
1k views

Analyzing Accelerometer data characteristics and designing a filter

I have about 32 seconds worth of accelerometer data of a basic driving scenario 25MPH normal roads along with hitting about 7 potholes and a rough patch of road. The accelerometer is mounted on the ...
13
votes
2answers
583 views

transmitting 5v signal over a long cable

I'm seeking for help here as I need a reliable answer to this. I need to get an input signal (low frequency 5v digital pulse), to a micro-controller from a ...
2
votes
4answers
199 views

Frequency shift

I'm trying to generate a signal which contains only several specific frequencies I know of in advance, around (16.4kHz, 16.7khZ, 17kHz,...) the signal is generated using a microcontroller, which then ...
2
votes
2answers
108 views

Interfacing signals between two parts at different voltage levels

I would like to connect four output pins of a certain IC to four input pins of an AVR microcontroller (Atmega328). I'm running the IC at VCC that varies between 3.50V and 4.00V. It outputs signals ...
2
votes
1answer
244 views

How to write a simple feedback loop in difference equation?

I know how to write a simple close loop transfer function which is http://en.wikipedia.org/wiki/Control_theory Now I need to do it in difference equation form, like the equation in ...
2
votes
2answers
562 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 ...
2
votes
2answers
2k views

Input sound to arduino via microphone jack

I'm designing a gadget which will light up LEDs using a microcontroller. I'd like for it to respond to an audio signal, so I was thinking there are a lot of ways I could do it: If I can accurately ...