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Old Mar 15, 2010, 03:26 PM
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.
see here ...
- http://www.atmel.com/dyn/resources/p...ents/8271S.pdf

or
- http://www.atmel.com/dyn/resources/p...ments/8271.pdf


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Old Mar 15, 2010, 03:27 PM
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Lowie it is truly best to learn how to use the tools. Juergen provided an excellent link and if you scroll down to the section explaining "burning fuses" you will find a link to the avr fuse calculator. In the first drop down box select the device type (atmega88) and choose the clock options KapteinKuk graciously provided in an earlier post. At the bottom it will give you the value of the low,high and extended fuse bytes. Enter these in the GUI. Give it a try first and see what you come up with. And no they do not appear to be the same for an atmega88.
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Old Mar 16, 2010, 06:43 AM
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I have fond a avr fuse calculater on the net : http://www.engbedded.com/fusecalc/

I give it a try and a give my report (it can take 1 week or so)
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Old Mar 16, 2010, 10:20 AM
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Correct clock speed is important.

Use the attached program to test the clock speed.

When running the led will be off for one minute and then on for one minute, and so on. Check with a stop watch. A few seconds off is OK.

If not, the fuses is wrong.

If it does not blink at all, the clock is not running or something else is wrong.
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Old Mar 16, 2010, 11:32 AM
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I have another problem : I cant order an 8MHz ATmega,I thougt I had read That the clockspeed dusn't matter.Than I can order an 20MHz ATmega?
But the avr fuse calculator can't calculate the fuses for the internal clock from 20MHz,had enyone another fuse calculator?
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Old Mar 16, 2010, 03:43 PM
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Yes.

The 8 and 20MHz is their maximum speed. They can use any clock freq below and inclusive their maximum speed.

I have no idea about the fuse calcs.
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Old Mar 16, 2010, 03:51 PM
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i m confused ,
purchased :
4 bldc
4esc
1 lipo
3 gyros
just want to know what else (everything right from scratch)will i need
pleeeez help me ,i m a noob to RC hobby
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Old Mar 16, 2010, 07:20 PM
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Nitc

Go here:

http://www.rcgroups.com/forums/showthread.php?t=1174262

read everything, Understand it...and if you still have questions, we would be glad to answer them!

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Old Mar 17, 2010, 04:08 AM
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i have read the whole discussion and dowloaded all the images .
btw i was asking for atmega48 based components thanks
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Old Mar 17, 2010, 04:20 AM
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Quote:
Originally Posted by nitc View Post
i m confused ,
purchased :
4 bldc
4esc
1 lipo
3 gyros
just want to know what else (everything right from scratch)will i need
pleeeez help me ,i m a noob to RC hobby
RC components are the same as everywhere. - http://aeroquad.info/bin/view/Main/PartsList_v2

etc. my parts ...



jürgen
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Old Mar 17, 2010, 07:00 AM
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Kaptian,you say :

"The 8 and 20MHz is their maximum speed. They can use any clock freq below and inclusive their maximum speed."

Than I can use an ATmega 88 with a maximum 20MHz clock.And simplely don't use the 20 mHZ clock but a 8MHZ clock?

Thanks Lowie
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Old Mar 17, 2010, 10:48 AM
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Bravo kapteinkuk,


Is it possible to use atmega168 for your quad controller circuit , if so please help me out in setting the atmega168 for 8Mhz internal oscillator with fuses using phony prog since my burner is compatible with phony prog, and will the same code will be working for atmega168 too else we have to make any modification in the code ? ..
im ready with your hardware only the burning part is left .. im struck up with the internal clocksettings for atmega168.. please please please help me out ken
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Old Mar 17, 2010, 11:51 AM
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Quote:
Originally Posted by lowie View Post
Kaptian,you say :

"The 8 and 20MHz is their maximum speed. They can use any clock freq below and inclusive their maximum speed."

Than I can use an ATmega 88 with a maximum 20MHz clock.And simplely don't use the 20 mHZ clock but a 8MHZ clock?

Thanks Lowie
Yes, that is correct.
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Old Mar 17, 2010, 12:19 PM
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Kaptain,

Thanks for the answer.Now I gone start to build one!!!!!!

Lowie
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Old Mar 17, 2010, 12:43 PM
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Kaptain,

Is there a difference between VCC + and + 5V in the schematic from the QuadcontrollerV2?
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