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Upgrade your Arduino projects

Running out of space in your big Arduino project? Good news! Finally, after months of backorders, one can now buy the latest improvement to the ‘ATmega8’ line of chips: the ATmega328’s.

The ‘328 has 32K of flash, and 2K of SRAM. Basically its got the capacity of an ATmega32 but in a slimmer package. These chips are notable for their ability to drop-in replace the ATmega168. So that means if you have an Arduino or compatible clone, it is a easy 2 minute swap.

If you have an Adafruit wave shield or GPS/datalogging shield, and you’re annoyed that the FAT16 libraries eats up so much flash and RAM, upgrading will definitely fix the problem.

I’ve merged my previous updates to the Arduino bootloader to the most recent release and also fixed 2 annoying bugs that have prevailed this long. (1. the missing signature bytes when using the bootloader directly and 2. the broken EEPROM code). Download the ‘328-compatible bootloader files here.

There are 250 preprogrammed chips are in the Adafruit webshop or you can get blank chips from Mouser (but be warned that they’re backordered till mid-December)


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2 Comments

  1. Cool! Thanks for the quick turnaround on the EEPROM bug. Does this also fix the same bug in ‘168 chips you’re shipping now/in the near future?

  2. no problem! thanks for ‘bugging’ (ha!) me about it 🙂
    unfortunately all the kits are already made but ‘eventually’ they will be swapped out with the new fixed rev. of course, im planning to replace all the kits with ‘328s soon anyhow…once they’re easy to get that is

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