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Electronics => Electronics => Topic started by: Joker94 on June 27, 2009, 07:18:54 PM

Title: experamental electonics board
Post by: Joker94 on June 27, 2009, 07:18:54 PM

i m making a mcu board so i can hook up my new electronics i have built to my $50 robot to try them out

i am planning on using a atmega8 28 pin mcu is this a good choice

Title: Re: experamental electonics board
Post by: sonictj on June 27, 2009, 09:16:15 PM

Might as well go with an atmega328 20pu.  The price is very close and there is 4 times the memory and also more ram.  Otherwise the hardware is the same.  If you want a lot of power go to a atmega644 20Pu (40 pin).  It has the most power of any of the DIP chips. 

Title: Re: experamental electonics board
Post by: Razor Concepts on June 27, 2009, 09:23:19 PM

The 324, the 644's little brother, has less memory but two UART instead of only one on the 644. Just a note if UARTs are important to you.

Title: Re: experamental electonics board
Post by: sonictj on June 27, 2009, 10:45:28 PM

The 644p I mentioned also has 2 uarts the normal 644 does not.

Title: Re: experamental electonics board
Post by: Razor Concepts on June 27, 2009, 11:24:17 PM

Ah, I didn't notice that. Looks like I am using the old style 644s  :-\

Title: Re: experamental electonics board
Post by: Joker94 on June 28, 2009, 02:32:02 AM

what is a atmega 88 like

better or worse

Title: Re: experamental electonics board
Post by: sonictj on June 28, 2009, 09:35:54 AM

it's just the little brother of the 168, and 328.  The only reason to buy one instead of the 328 would be if you were manufacturing a product and did not need the extra capabilities.  That would save a bit of money in a huge manufacturing run.  You on the other hand will most likely buy a very small quantity so the price difference is fairly inconsequential.  The programing is the same for both the 88 and the 328.