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Fast timer operation
Hi Freaks, I am running an M328 at 8MHz. I need an output of 4 MHz. I want this to be controllable as I am trying to sync multiple operations with this. To achieve this, I am...
Tuesday, 13 April 2010 - 21:53
Running SPI at uncommon frequencies
Hi Freaks, I am trying to run SPI on Atmega168 at uncommon frequencies like 6MHz,7MHz and so on. How can I do this? Is one way to do this is to bit bang the AVR ports? The other...
Monday, 12 April 2010 - 13:08
Opinion on design idea (loading patterns from AVR to DUT)
Hi Guys, I am trying to design a system that will load any pattern/s into another DUT IC (e.g.say an ADC) to initialize it to a known state (loading registers with known values)....
Thursday, 8 April 2010 - 04:31
Commonly used high speed 16 bit ADC IC's
Hi Guys, What are some commonly used (tested with AVR's) high speed ADC IC's that you guys have used in your project? I was looking for something along the following lines: 1. 16...
Saturday, 3 April 2010 - 23:33
Zigbit module newbie help
Hi Freaks, I have two Zigbit 2.4GHz modules. I want to eventually use them (one as transmitter and another as receiver) to control a stepper motor remotely. Where should I begin...
Sunday, 28 March 2010 - 04:14
ADC and internal RAM
Hi Freaks, I am using an Atmega48 ADC to collect some samples of a sine wave. I am trying to save samples in the M48 RAM (512 bytes). I am using an array of 256 bytes to store...
Saturday, 27 March 2010 - 19:03
FFT basic question
Hi Guys, It's been a while since I looked at the FFT in detail so I have a basic question. What information do you need to plot the FFT of a signal? Sampling frequency How many...
Friday, 19 March 2010 - 01:20
ADC averaging question
Hi Guys, I am trying to average out the ADC value (ADCH). I am using Mega48. I have a DC voltage of about 1.25V at the ADC input pin. This is giving me an ADCh value of about 62H...
Sunday, 14 March 2010 - 23:17
Capturing high frequency signals with AVR ADC
Hi Guys, This is related to one of my earlier posts on capturing a relatively pure sine wave (from a signal generator). I know the ADC limitation of the 8 bit AVR's of 200ksps/13...
Monday, 8 March 2010 - 03:12
AVR + SPI (yet another!!)
Hi Guys, I am trying to use the example from AVR151 for the SPI between two Atmega168's (one master and one slave). Both are using an 8MHz crystal. Here is the master code: //...
Tuesday, 2 March 2010 - 05:00
Suggestions on RF module for handheld app.
Hi Guys, I am thinking of making a handheld app where I have to control a remote (50 feet through walls) stepper motor. What are some good transmitter/receiver modules I can use...
Sunday, 21 February 2010 - 17:30
Are these Sparkfun wireless modules FCC certified?
Hi Guys, I was looking at the popular and cheap RF Link modules that Sparkfun has. I was of the opinion that these modules are FCC certified, but a comment on the Wireless Buying...
Tuesday, 16 February 2010 - 13:43

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