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Topic: Arduino with Atmega32A core (Read 1 time) previous topic - next topic

hansibull

Sep 10, 2012, 12:49 pm Last Edit: Sep 10, 2012, 04:01 pm by hansibull Reason: 1
Hi!
I've been looking at the atmega1284 chip the past few weeks, and I think it's a great chip if you need a LOT of flash memory, and more IO ports. The only problem is that the AVR it selves costs about 17$ with shipping from ebay. that's about the price of a Mega2560 (clone).
Since I don't need that much flash memory, I started looking for other, cheaper alternatives. the difference between 1284 and 644 when it comes to price isn't big. just a few dollars (at ebay). still, the smaller Atmega32A costs about 4$, and also have a lot of IO pins.

does it exist an Arduino bootloader for the Atmega32A? is there a cheaper place to buy AVRs than ebay?

Thanks!

supercrab

I've bought an Atmega32A from Farnell in the UK.  It cost me about £4.  I have it on a breadboard and bootloaded it with an Arduino Uno.  It works fine apart from digitalRead not working for some reason.

These links should help you get going with the bootloader.

http://www.avrfreaks.net/index.php?name=PNphpBB2&file=viewtopic&t=101227
 
http://retrointerfacing.com/?p=30
My Arduino 7 segment LCD/LED library

http://code.google.com/p/arduino-seven-segment/

Tom Carpenter

~Tom~

fungus


does it exist an Arduino bootloader for the Atmega32A?


Why on earth would you want a bootloader if you're building a standalone device?

Get a $10 ISP programmer.

No, I don't answer questions sent in private messages (but I do accept thank-you notes...)

olof_n

#4
Jan 07, 2013, 06:19 pm Last Edit: Jan 07, 2013, 06:24 pm by olof_n Reason: 1
Ebay is not always the best place to buy from.
I don't know why ATMega1284 is so expensive on ebay.

I recommend Futurlec, I have bought microcontrollers from them a couple of times.
ATMega1284  6.9$
ATMega328   2.20$
ATTiny85      1.15$

I think 6.9$ is a bit expensive compared to ATMega328.
I also recommend buying a separat programmer and skip the bootloader.

/Olof

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