Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: yyy on October 23, 2009, 07:47:40 AM

Title: 50 dollar robot - replace ATmega8 AVR
Post by: yyy on October 23, 2009, 07:47:40 AM

Hallow I build the 50 dollar robot
I go to the electronic store near my house and they don't have ATmega8 AVR
But they have these parts
ATmega 162
AT90s 1200-12pc
Atmel  442   24C32A
Atmel 550   24C08A
Atmel 512   24C04
Atmel  648   24C16A

My question is :
Can I use one of this chips instead of ATmega8 AVR for the 50 dollar robot without problems?

Title: Re: 50 dollar robot - replace ATmega8 AVR
Post by: GearMotion on October 23, 2009, 07:57:26 AM

Only the ATmega162 is a reasonable option. It will have pin out differences to take into consideration when replacing the mega 8.

The 90s1200 is an old chip. Obsolete, I believe.

The last 4 parts are not microcontrollers. They are serial EEPROMS.

Title: Re: 50 dollar robot - replace ATmega8 AVR
Post by: Asellith on October 23, 2009, 09:50:42 AM

http://www.societyofrobots.com/step_by_step_atmega168_swapout.shtml (http://www.societyofrobots.com/step_by_step_atmega168_swapout.shtml)

The 168 will work but you don't have that listed as available but it is another part number to look for.

Title: Re: 50 dollar robot - replace ATmega8 AVR
Post by: ozbot on October 27, 2009, 04:28:12 AM

Do you have problems getting parts?  I got 5x ATMega8's of ebay for ~$13 AUD plus postage,  www.farnell.com (http://www.farnell.com) also has a good selection of parts, assuming you have access to internet trade.

Title: Re: 50 dollar robot - replace ATmega8 AVR
Post by: SmAsH on October 27, 2009, 05:20:36 AM

5 ATMEL ATMEGA8-16PU AVR 8-bit Microcontroller Chip IC
http://cgi.ebay.com.au/5-ATMEL-ATMEGA8-16PU-AVR-8-bit-Microcontroller-Chip-IC_W0QQitemZ170398489754QQcmdZViewItemQQptZAU_Components?hash=item27ac8a9c9a (http://cgi.ebay.com.au/5-ATMEL-ATMEGA8-16PU-AVR-8-bit-Microcontroller-Chip-IC_W0QQitemZ170398489754QQcmdZViewItemQQptZAU_Components?hash=item27ac8a9c9a)
was looking at these the other day, great bargain if you ask me... ~$9au!